2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-21 03:33:59 +08:00
Commit Graph

921455 Commits

Author SHA1 Message Date
Mike Rapoport
3f08a302f5 mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP option
CONFIG_HAVE_MEMBLOCK_NODE_MAP is used to differentiate initialization of
nodes and zones structures between the systems that have region to node
mapping in memblock and those that don't.

Currently all the NUMA architectures enable this option and for the
non-NUMA systems we can presume that all the memory belongs to node 0 and
therefore the compile time configuration option is not required.

The remaining few architectures that use DISCONTIGMEM without NUMA are
easily updated to use memblock_add_node() instead of memblock_add() and
thus have proper correspondence of memblock regions to NUMA nodes.

Still, free_area_init_node() must have a backward compatible version
because its semantics with and without CONFIG_HAVE_MEMBLOCK_NODE_MAP is
different.  Once all the architectures will use the new semantics, the
entire compatibility layer can be dropped.

To avoid addition of extra run time memory to store node id for
architectures that keep memblock but have only a single node, the node id
field of the memblock_region is guarded by CONFIG_NEED_MULTIPLE_NODES and
the corresponding accessors presume that in those cases it is always 0.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Hoan Tran <hoan@os.amperecomputing.com>	[arm64]
Acked-by: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Cc: Baoquan He <bhe@redhat.com>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200412194859.12663-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:43 -07:00
Mike Rapoport
6f24fbd38c mm: make early_pfn_to_nid() and related defintions close to each other
early_pfn_to_nid() and its helper __early_pfn_to_nid() are spread around
include/linux/mm.h, include/linux/mmzone.h and mm/page_alloc.c.

Drop unused stub for __early_pfn_to_nid() and move its actual generic
implementation close to its users.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Hoan Tran <hoan@os.amperecomputing.com>	[arm64]
Reviewed-by: Baoquan He <bhe@redhat.com>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200412194859.12663-3-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:43 -07:00
Mike Rapoport
d622abf74f mm: memblock: replace dereferences of memblock_region.nid with API calls
Patch series "mm: rework free_area_init*() funcitons".

After the discussion [1] about removal of CONFIG_NODES_SPAN_OTHER_NODES
and CONFIG_HAVE_MEMBLOCK_NODE_MAP options, I took it a bit further and
updated the node/zone initialization.

Since all architectures have memblock, it is possible to use only the
newer version of free_area_init_node() that calculates the zone and node
boundaries based on memblock node mapping and architectural limits on
possible zone PFNs.

The architectures that still determined zone and hole sizes can be
switched to the generic code and the old code that took those zone and
hole sizes can be simply removed.

And, since it all started from the removal of
CONFIG_NODES_SPAN_OTHER_NODES, the memmap_init() is now updated to iterate
over memblocks and so it does not need to perform early_pfn_to_nid() query
for every PFN.

[1] https://lore.kernel.org/lkml/1585420282-25630-1-git-send-email-Hoan@os.amperecomputing.com

This patch (of 21):

There are several places in the code that directly dereference
memblock_region.nid despite this field being defined only when
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y.

Replace these with calls to memblock_get_region_nid() to improve code
robustness and to avoid possible breakage when
CONFIG_HAVE_MEMBLOCK_NODE_MAP will be removed.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Hoan Tran <hoan@os.amperecomputing.com>	[arm64]
Reviewed-by: Baoquan He <bhe@redhat.com>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200412194859.12663-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200412194859.12663-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:43 -07:00
Michal Hocko
574c1ae66c mm: clarify __GFP_MEMALLOC usage
It seems that the existing documentation is not explicit about the
expected usage and potential risks enough.  While it is calls out that
users have to free memory when using this flag it is not really apparent
that users have to careful to not deplete memory reserves and that they
should implement some sort of throttling wrt.  freeing process.

This is partly based on Neil's explanation [1].

Let's also call out that a pre allocated pool allocator should be
considered.

[1] http://lkml.kernel.org/r/877dz0yxoa.fsf@notabene.neil.brown.name

[akpm@linux-foundation.org: coding style fixes]
[mhocko@kernel.org: update]
  Link: http://lkml.kernel.org/r/20200406070137.GC19426@dhcp22.suse.cz
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Link: http://lkml.kernel.org/r/20200403083543.11552-2-mhocko@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:43 -07:00
Daniel Axtens
47227d27e2 string.h: fix incompatibility between FORTIFY_SOURCE and KASAN
The memcmp KASAN self-test fails on a kernel with both KASAN and
FORTIFY_SOURCE.

When FORTIFY_SOURCE is on, a number of functions are replaced with
fortified versions, which attempt to check the sizes of the operands.
However, these functions often directly invoke __builtin_foo() once they
have performed the fortify check.  Using __builtins may bypass KASAN
checks if the compiler decides to inline it's own implementation as
sequence of instructions, rather than emit a function call that goes out
to a KASAN-instrumented implementation.

Why is only memcmp affected?
============================

Of the string and string-like functions that kasan_test tests, only memcmp
is replaced by an inline sequence of instructions in my testing on x86
with gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2).

I believe this is due to compiler heuristics.  For example, if I annotate
kmalloc calls with the alloc_size annotation (and disable some fortify
compile-time checking!), the compiler will replace every memset except the
one in kmalloc_uaf_memset with inline instructions.  (I have some WIP
patches to add this annotation.)

Does this affect other functions in string.h?
=============================================

Yes. Anything that uses __builtin_* rather than __real_* could be
affected. This looks like:

 - strncpy
 - strcat
 - strlen
 - strlcpy maybe, under some circumstances?
 - strncat under some circumstances
 - memset
 - memcpy
 - memmove
 - memcmp (as noted)
 - memchr
 - strcpy

Whether a function call is emitted always depends on the compiler.  Most
bugs should get caught by FORTIFY_SOURCE, but the missed memcmp test shows
that this is not always the case.

Isn't FORTIFY_SOURCE disabled with KASAN?
========================================-

The string headers on all arches supporting KASAN disable fortify with
kasan, but only when address sanitisation is _also_ disabled.  For example
from x86:

 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
 /*
  * For files that are not instrumented (e.g. mm/slub.c) we
  * should use not instrumented version of mem* functions.
  */
 #define memcpy(dst, src, len) __memcpy(dst, src, len)
 #define memmove(dst, src, len) __memmove(dst, src, len)
 #define memset(s, c, n) __memset(s, c, n)

 #ifndef __NO_FORTIFY
 #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
 #endif

 #endif

This comes from commit 6974f0c455 ("include/linux/string.h: add the
option of fortified string.h functions"), and doesn't work when KASAN is
enabled and the file is supposed to be sanitised - as with test_kasan.c

I'm pretty sure this is not wrong, but not as expansive it should be:

 * we shouldn't use __builtin_memcpy etc in files where we don't have
   instrumentation - it could devolve into a function call to memcpy,
   which will be instrumented. Rather, we should use __memcpy which
   by convention is not instrumented.

 * we also shouldn't be using __builtin_memcpy when we have a KASAN
   instrumented file, because it could be replaced with inline asm
   that will not be instrumented.

What is correct behaviour?
==========================

Firstly, there is some overlap between fortification and KASAN: both
provide some level of _runtime_ checking. Only fortify provides
compile-time checking.

KASAN and fortify can pick up different things at runtime:

 - Some fortify functions, notably the string functions, could easily be
   modified to consider sub-object sizes (e.g. members within a struct),
   and I have some WIP patches to do this. KASAN cannot detect these
   because it cannot insert poision between members of a struct.

 - KASAN can detect many over-reads/over-writes when the sizes of both
   operands are unknown, which fortify cannot.

So there are a couple of options:

 1) Flip the test: disable fortify in santised files and enable it in
    unsanitised files. This at least stops us missing KASAN checking, but
    we lose the fortify checking.

 2) Make the fortify code always call out to real versions. Do this only
    for KASAN, for fear of losing the inlining opportunities we get from
    __builtin_*.

(We can't use kasan_check_{read,write}: because the fortify functions are
_extern inline_, you can't include _static_ inline functions without a
compiler warning. kasan_check_{read,write} are static inline so we can't
use them even when they would otherwise be suitable.)

Take approach 2 and call out to real versions when KASAN is enabled.

Use __underlying_foo to distinguish from __real_foo: __real_foo always
refers to the kernel's implementation of foo, __underlying_foo could be
either the kernel implementation or the __builtin_foo implementation.

This is sometimes enough to make the memcmp test succeed with
FORTIFY_SOURCE enabled. It is at least enough to get the function call
into the module. One more fix is needed to make it reliable: see the next
patch.

Fixes: 6974f0c455 ("include/linux/string.h: add the option of fortified string.h functions")
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: David Gow <davidgow@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Link: http://lkml.kernel.org/r/20200423154503.5103-3-dja@axtens.net
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
Daniel Axtens
adb72ae191 kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE
Patch series "Fix some incompatibilites between KASAN and FORTIFY_SOURCE", v4.

3 KASAN self-tests fail on a kernel with both KASAN and FORTIFY_SOURCE:
memchr, memcmp and strlen.

When FORTIFY_SOURCE is on, a number of functions are replaced with
fortified versions, which attempt to check the sizes of the operands.
However, these functions often directly invoke __builtin_foo() once they
have performed the fortify check.  The compiler can detect that the
results of these functions are not used, and knows that they have no other
side effects, and so can eliminate them as dead code.

Why are only memchr, memcmp and strlen affected?
================================================

Of string and string-like functions, kasan_test tests:

 * strchr  ->  not affected, no fortified version
 * strrchr ->  likewise
 * strcmp  ->  likewise
 * strncmp ->  likewise

 * strnlen ->  not affected, the fortify source implementation calls the
               underlying strnlen implementation which is instrumented, not
               a builtin

 * strlen  ->  affected, the fortify souce implementation calls a __builtin
               version which the compiler can determine is dead.

 * memchr  ->  likewise
 * memcmp  ->  likewise

 * memset ->   not affected, the compiler knows that memset writes to its
	       first argument and therefore is not dead.

Why does this not affect the functions normally?
================================================

In string.h, these functions are not marked as __pure, so the compiler
cannot know that they do not have side effects.  If relevant functions are
marked as __pure in string.h, we see the following warnings and the
functions are elided:

lib/test_kasan.c: In function `kasan_memchr':
lib/test_kasan.c:606:2: warning: statement with no effect [-Wunused-value]
  memchr(ptr, '1', size + 1);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~
lib/test_kasan.c: In function `kasan_memcmp':
lib/test_kasan.c:622:2: warning: statement with no effect [-Wunused-value]
  memcmp(ptr, arr, size+1);
  ^~~~~~~~~~~~~~~~~~~~~~~~
lib/test_kasan.c: In function `kasan_strings':
lib/test_kasan.c:645:2: warning: statement with no effect [-Wunused-value]
  strchr(ptr, '1');
  ^~~~~~~~~~~~~~~~
...

This annotation would make sense to add and could be added at any point,
so the behaviour of test_kasan.c should change.

The fix
=======

Make all the functions that are pure write their results to a global,
which makes them live.  The strlen and memchr tests now pass.

The memcmp test still fails to trigger, which is addressed in the next
patch.

[dja@axtens.net: drop patch 3]
  Link: http://lkml.kernel.org/r/20200424145521.8203-2-dja@axtens.net
Fixes: 0c96350a2d ("lib/test_kasan.c: add tests for several string/memory API functions")
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: David Gow <davidgow@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Link: http://lkml.kernel.org/r/20200423154503.5103-1-dja@axtens.net
Link: http://lkml.kernel.org/r/20200423154503.5103-2-dja@axtens.net
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
John Hubbard
f81cd178ec mm/gup: might_lock_read(mmap_sem) in get_user_pages_fast()
Instead of scattering these assertions across the drivers, do this
assertion inside the core of get_user_pages_fast*() functions.  That also
includes pin_user_pages_fast*() routines.

Add a might_lock_read(mmap_sem) call to internal_get_user_pages_fast().

Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Link: http://lkml.kernel.org/r/20200522010443.1290485-1-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
John Hubbard
2170ecfa76 drm/i915: convert get_user_pages() --> pin_user_pages()
This code was using get_user_pages*(), in a "Case 2" scenario (DMA/RDMA),
using the categorization from [1].  That means that it's time to convert
the get_user_pages*() + put_page() calls to pin_user_pages*() +
unpin_user_pages() calls.

There is some helpful background in [2]: basically, this is a small part
of fixing a long-standing disconnect between pinning pages, and file
systems' use of those pages.

[1] Documentation/core-api/pin_user_pages.rst

[2] "Explicit pinning of user-space pages":
    https://lwn.net/Articles/807108/

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: "Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Link: http://lkml.kernel.org/r/20200519002124.2025955-5-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
John Hubbard
104acc3276 mm/gup: introduce pin_user_pages_fast_only()
This is the FOLL_PIN equivalent of __get_user_pages_fast(), except with a
more descriptive name, and gup_flags instead of a boolean "write" in the
argument list.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: "Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://lkml.kernel.org/r/20200519002124.2025955-4-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
John Hubbard
376a34efa4 mm/gup: refactor and de-duplicate gup_fast() code
There were two nearly identical sets of code for gup_fast() style of
walking the page tables with interrupts disabled.  This has lead to the
usual maintenance problems that arise from having duplicated code.

There is already a core internal routine in gup.c for gup_fast(), so just
enhance it very slightly: allow skipping the fall-back to "slow" (regular)
get_user_pages(), via the new FOLL_FAST_ONLY flag.  Then, just call
internal_get_user_pages_fast() from __get_user_pages_fast(), and adjust
the API to match pre-existing API behavior.

There is a change in behavior from this refactoring: the nested form of
interrupt disabling is used in all gup_fast() variants now.  That's
because there is only one place that interrupt disabling for page walking
is done, and so the safer form is required.  This should, if anything,
eliminate possible (rare) bugs, because the non-nested form of enabling
interrupts was fragile at best.

[jhubbard@nvidia.com: fixup]
  Link: http://lkml.kernel.org/r/20200521233841.1279742-1-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: "Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://lkml.kernel.org/r/20200519002124.2025955-3-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
John Hubbard
9e1f0580d3 mm/gup: move __get_user_pages_fast() down a few lines in gup.c
Patch series "mm/gup, drm/i915: refactor gup_fast, convert to pin_user_pages()", v2.

In order to convert the drm/i915 driver from get_user_pages() to
pin_user_pages(), a FOLL_PIN equivalent of __get_user_pages_fast() was
required.  That led to refactoring __get_user_pages_fast(), with the
following goals:

1) As above: provide a pin_user_pages*() routine for drm/i915 to call,
   in place of __get_user_pages_fast(),

2) Get rid of the gup.c duplicate code for walking page tables with
   interrupts disabled. This duplicate code is a minor maintenance
   problem anyway.

3) Make it easy for an upcoming patch from Souptick, which aims to
   convert __get_user_pages_fast() to use a gup_flags argument, instead
   of a bool writeable arg.  Also, if this series looks good, we can
   ask Souptick to change the name as well, to whatever the consensus
   is. My initial recommendation is: get_user_pages_fast_only(), to
   match the new pin_user_pages_only().

This patch (of 4):

This is in order to avoid a forward declaration of
internal_get_user_pages_fast(), in the next patch.

This is code movement only--all generated code should be identical.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: "Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://lkml.kernel.org/r/20200522051931.54191-1-jhubbard@nvidia.com
Link: http://lkml.kernel.org/r/20200519002124.2025955-1-jhubbard@nvidia.com
Link: http://lkml.kernel.org/r/20200519002124.2025955-2-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
Shakeel Butt
dd8657b6c1 mm/memcg: optimize memory.numa_stat like memory.stat
Currently reading memory.numa_stat traverses the underlying memcg tree
multiple times to accumulate the stats to present the hierarchical view of
the memcg tree.  However the kernel already maintains the hierarchical
view of the stats and use it in memory.stat.  Just use the same mechanism
in memory.numa_stat as well.

I ran a simple benchmark which reads root_mem_cgroup's memory.numa_stat
file in the presense of 10000 memcgs.  The results are:

Without the patch:
$ time cat /dev/cgroup/memory/memory.numa_stat > /dev/null

real    0m0.700s
user    0m0.001s
sys     0m0.697s

With the patch:
$ time cat /dev/cgroup/memory/memory.numa_stat > /dev/null

real    0m0.001s
user    0m0.001s
sys     0m0.000s

[akpm@linux-foundation.org: avoid forcing out-of-line code generation]
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Michal Hocko <mhocko@kernel.org>
Link: http://lkml.kernel.org/r/20200304022058.248270-1-shakeelb@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
Wang Hai
dde3c6b72a mm/slub: fix a memory leak in sysfs_slab_add()
syzkaller reports for memory leak when kobject_init_and_add() returns an
error in the function sysfs_slab_add() [1]

When this happened, the function kobject_put() is not called for the
corresponding kobject, which potentially leads to memory leak.

This patch fixes the issue by calling kobject_put() even if
kobject_init_and_add() fails.

[1]
  BUG: memory leak
  unreferenced object 0xffff8880a6d4be88 (size 8):
  comm "syz-executor.3", pid 946, jiffies 4295772514 (age 18.396s)
  hex dump (first 8 bytes):
    70 69 64 5f 33 00 ff ff                          pid_3...
  backtrace:
     kstrdup+0x35/0x70 mm/util.c:60
     kstrdup_const+0x3d/0x50 mm/util.c:82
     kvasprintf_const+0x112/0x170 lib/kasprintf.c:48
     kobject_set_name_vargs+0x55/0x130 lib/kobject.c:289
     kobject_add_varg lib/kobject.c:384 [inline]
     kobject_init_and_add+0xd8/0x170 lib/kobject.c:473
     sysfs_slab_add+0x1d8/0x290 mm/slub.c:5811
     __kmem_cache_create+0x50a/0x570 mm/slub.c:4384
     create_cache+0x113/0x1e0 mm/slab_common.c:407
     kmem_cache_create_usercopy+0x1a1/0x260 mm/slab_common.c:505
     kmem_cache_create+0xd/0x10 mm/slab_common.c:564
     create_pid_cachep kernel/pid_namespace.c:54 [inline]
     create_pid_namespace kernel/pid_namespace.c:96 [inline]
     copy_pid_ns+0x77c/0x8f0 kernel/pid_namespace.c:148
     create_new_namespaces+0x26b/0xa30 kernel/nsproxy.c:95
     unshare_nsproxy_namespaces+0xa7/0x1e0 kernel/nsproxy.c:229
     ksys_unshare+0x3d2/0x770 kernel/fork.c:2969
     __do_sys_unshare kernel/fork.c:3037 [inline]
     __se_sys_unshare kernel/fork.c:3035 [inline]
     __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3035
     do_syscall_64+0xa1/0x530 arch/x86/entry/common.c:295

Fixes: 80da026a8e ("mm/slub: fix slab double-free in case of duplicate sysfs filename")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: http://lkml.kernel.org/r/20200602115033.1054-1-wanghai38@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 20:09:42 -07:00
Linus Torvalds
d6f9469a03 Changes since last update:
- Convert to use the new mount apis;
 
  - Some random cleanup patches.
 -----BEGIN PGP SIGNATURE-----
 
 iIsEABYIADMWIQThPAmQN9sSA0DVxtI5NzHcH7XmBAUCXtbfOhUcaHNpYW5na2Fv
 QHJlZGhhdC5jb20ACgkQOTcx3B+15gTvZgD6Ap8mYxRaW7Qta+HEyFuyRrxWZ/XZ
 pq/hYiouGosDdaMBAOUNl8pGlPX54T+Y9VZv0wV0Dp4pan6NApdgtL9fIQUE
 =QhQh
 -----END PGP SIGNATURE-----

Merge tag 'erofs-for-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Pull erofs updates from Gao Xiang:
 "The most interesting part is the new mount api conversion, which is
  actually a old patch already pending for several cycles. And the
  others are recent trivial cleanups here.

  Summary:

   - Convert to use the new mount apis

   - Some random cleanup patches"

* tag 'erofs-for-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: suppress false positive last_block warning
  erofs: convert to use the new mount fs_context api
  erofs: code cleanup by removing ifdef macro surrounding
2020-06-02 20:16:55 -07:00
Linus Torvalds
cadf32234b Replace zero-length array in JFS
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEIodevzQLVs53l6BhNqiEXrVAjGQFAl7WbbAACgkQNqiEXrVA
 jGRBvg//aff/q785MyIKlv2icnWJTFIfkFhdKBfD36OI5Obur3ko17gJiRQ7BvIl
 07yBTOpcqYyq4pThFXA8TfiZyRxKv0faHeFYmtmEum6gZNtHPmpvfy1JFr12vjHZ
 SWSpylW6nprQJa61KwGHcRqTGuWe0sco6BBAQ/E015wJLKrtIpNCH5H3x3eDv8we
 nBPSHSu1BsJFTcf94ECZhjbsiLgLgTaYVFUU8tw7eTp7EkZz9xq6wYmhZ6e5Z6Ki
 AGbIQ/c16Nk5B3/8A1bU0pm7BHz9Zx1ucNy4KZqyFl2fWEmQiv1ofa3cfLI+ZAF2
 /TFzLW+rpvesc+Byk7PgzRrLNXAMBk+botzdlN8JPaPDFYcm6whnRKstmjYGAzCI
 /bpTI9wyEPzlfWtt5h2ws1KaP5HNl1OLd3sJCzfwH+nKaeJpdBBSaZRQ0yZWIsg5
 hzt9WnJ10351sbLbAA4ybsOlWJvhPtSo8jSiGUGzu7aFyfa7H82nslWHuFjeI3F0
 qgcA5j6LJ8qAviMnhxX5jrqIMNZzyf+P5/oJvXjfSeWft1yD6EUqRqb7i0FREjh6
 qzxiX6xhRSh8AIr3XlToG3W7KULQkBJKwZumSTQ2X03yJRhelqKAs3LvvyXoZuG3
 oFvGgiGNph0VSTTPdOSrZZ3tOCDiONXfHHOFpghk4qKdWgFoWtg=
 =yNwD
 -----END PGP SIGNATURE-----

Merge tag 'jfs-5.8' of git://github.com/kleikamp/linux-shaggy

Pull JFS update from David Kleikamp:
 "Replace zero-length array in JFS"

* tag 'jfs-5.8' of git://github.com/kleikamp/linux-shaggy:
  jfs: Replace zero-length array with flexible-array member
2020-06-02 20:11:35 -07:00
Linus Torvalds
f3cdc8ae11 for-5.8-tag
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAl7U50AACgkQxWXV+ddt
 WDtK1g//RXeNsTguYQr1N9R5eUPThjLEI0+4J0l4SYfCPU8Ou3C7nqpOEJJQgm8F
 ezZE+16cWi9U5uGueOc+w0rfyz4AuIXKgzoz+c0/GG2+yV5jp6DsAMbWqojAb96L
 V/N3HxEzR66jqwgVUBE/x5okb2SyY7//B1l/O0amc66XDO7KTMImpIwThere6zWZ
 o2SNpYpHAPQeUYJQx8h+FAW3w1CxrCZmnifazU9Jqe9J7QeQLg7rbUlJDV38jySm
 ZOA8ohKN9U1gPZy+dTU3kdyyuBIq1etkIaSPJANyTo5TczPKiC0IMg75cXtS4ae/
 NSxhccMpSIjVMcIHARzSFGYKNP3sGNRsmaTUg/2Cx/9GoHOhYMiCAVc8qtBBpwJO
 UI0siexrCe64RuTBMRRc128GdFv7IjmSImcdi8xaR62bCcUiNdEa3zvjRe/9tOEH
 ET7Z85oBnKpSzpC3MdhSUU4dtHY5XLawP8z3oUU1VSzSWM2DVjlHf79/VzbOfp18
 miCVpt94lCn/gUX7el6qcnbuvMAjDyeC6HmfD+TwzQgGwyV6TLgKN9lRXeH/Oy6/
 VgjGQSavGHMll3zIGURmrBCXKudjJg0J+IP4wN1TimmSEMfwKH+7tnekQd8y5qlF
 eXEIqlWNykKeDzEnmV9QJy+/cV83hVWM/mUslcTx39tLN/3B/Us=
 =qTt8
 -----END PGP SIGNATURE-----

Merge tag 'for-5.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "Highlights:

   - speedup dead root detection during orphan cleanup, eg. when there
     are many deleted subvolumes waiting to be cleaned, the trees are
     now looked up in radix tree instead of a O(N^2) search

   - snapshot creation with inherited qgroup will mark the qgroup
     inconsistent, requires a rescan

   - send will emit file capabilities after chown, this produces a
     stream that does not need postprocessing to set the capabilities
     again

   - direct io ported to iomap infrastructure, cleaned up and simplified
     code, notably removing last use of struct buffer_head in btrfs code

  Core changes:

   - factor out backreference iteration, to be used by ordinary
     backreferences and relocation code

   - improved global block reserve utilization
      * better logic to serialize requests
      * increased maximum available for unlink
      * improved handling on large pages (64K)

   - direct io cleanups and fixes
      * simplify layering, where cloned bios were unnecessarily created
        for some cases
      * error handling fixes (submit, endio)
      * remove repair worker thread, used to avoid deadlocks during
        repair

   - refactored block group reading code, preparatory work for new type
     of block group storage that should improve mount time on large
     filesystems

  Cleanups:

   - cleaned up (and slightly sped up) set/get helpers for metadata data
     structure members

   - root bit REF_COWS got renamed to SHAREABLE to reflect the that the
     blocks of the tree get shared either among subvolumes or with the
     relocation trees

  Fixes:

   - when subvolume deletion fails due to ENOSPC, the filesystem is not
     turned read-only

   - device scan deals with devices from other filesystems that changed
     ownership due to overwrite (mkfs)

   - fix a race between scrub and block group removal/allocation

   - fix long standing bug of a runaway balance operation, printing the
     same line to the syslog, caused by a stale status bit on a reloc
     tree that prevented progress

   - fix corrupt log due to concurrent fsync of inodes with shared
     extents

   - fix space underflow for NODATACOW and buffered writes when it for
     some reason needs to fallback to COW mode"

* tag 'for-5.8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (133 commits)
  btrfs: fix space_info bytes_may_use underflow during space cache writeout
  btrfs: fix space_info bytes_may_use underflow after nocow buffered write
  btrfs: fix wrong file range cleanup after an error filling dealloc range
  btrfs: remove redundant local variable in read_block_for_search
  btrfs: open code key_search
  btrfs: split btrfs_direct_IO to read and write part
  btrfs: remove BTRFS_INODE_READDIO_NEED_LOCK
  fs: remove dio_end_io()
  btrfs: switch to iomap_dio_rw() for dio
  iomap: remove lockdep_assert_held()
  iomap: add a filesystem hook for direct I/O bio submission
  fs: export generic_file_buffered_read()
  btrfs: turn space cache writeout failure messages into debug messages
  btrfs: include error on messages about failure to write space/inode caches
  btrfs: remove useless 'fail_unlock' label from btrfs_csum_file_blocks()
  btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums
  btrfs: make checksum item extension more efficient
  btrfs: fix corrupt log due to concurrent fsync of inodes with shared extents
  btrfs: unexport btrfs_compress_set_level()
  btrfs: simplify iget helpers
  ...
2020-06-02 19:59:25 -07:00
Linus Torvalds
8eeae5bae1 (More) new code for 5.8:
- Introduce DONTCACHE flags for dentries and inodes.  This hint will
   cause the VFS to drop the associated objects immediately after the
   last put, so that we can change the file access mode (DAX or page
   cache) on the fly.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl68FowACgkQ+H93GTRK
 tOtNzA/9FkXXQYAlTWK/toHfJV8DQT/Kx1fvf8Ng0EphBUQa/rNzlcMzFg7Gw5Cs
 Rzis96+xj4q//iseLZN5LLxaoxqT2Qipza0GWCMJpQG/4wTWM0Ar7BnG/Vc87lUV
 F0mXnILZOUMFzr8Zj9q4ka6UGRTDSXXtwNXqBuPpIZyVbMQvPtXHhM3lWV5RUQwm
 fznBxDAEGoVXiyID2OrZD5tS4BMd16uFWAWLjWphpcy18zfC7zp0+0MQik4v/9oi
 54pZdtPT9/dQOu/BI8tfLP45XzZ6f++gXy2p/G96dy7ism1u40ML77ojEkadVVFe
 Bf7t+EswNxrx/em/ugWbcJDtrxttSqU47g2AXsbJJB2+aHCih6Cfid41lMyRvlhR
 d4cumoteX7IF/PpT3YaKHWQBo5OxHK0a2CBPd6czrCBw5yXrEUagdmw1XQ//bw5e
 FRCg4eMcEW0UgINvBCHWdWRx6VaL8ngMMsflVJ/lY7FeVvM10ZYRFzJoryoebSPm
 /yWcoHFsTPC8K0nWVmbwPazVE19I0g4y6Wiw39YvZDzZRzM9PcQI4DBxQcab+Va/
 FPfXEXkpz0GiC6zjs/QfkPtg60GI1IG5Um4JUzdv6ce1P0p1rGcu5WiNYearahE7
 7V/44WGIEAd4NP7R0JPTI0Fqv7v6uuDzMoCp7YDn8gE4FCJTt6M=
 =ebl3
 -----END PGP SIGNATURE-----

Merge tag 'vfs-5.8-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull DAX updates part two from Darrick Wong:
 "This time around, we're hoisting the DONTCACHE flag from XFS into the
  VFS so that we can make the incore DAX mode changes become effective
  sooner.

  We can't change the file data access mode on a live inode because we
  don't have a safe way to change the file ops pointers. The incore
  state change becomes effective at inode loading time, which can happen
  if the inode is evicted. Therefore, we're making it so that
  filesystems can ask the VFS to evict the inode as soon as the last
  holder drops.

  The per-fs changes to make this call this will be in subsequent pull
  requests from Ted and myself.

  Summary:

   - Introduce DONTCACHE flags for dentries and inodes. This hint will
     cause the VFS to drop the associated objects immediately after the
     last put, so that we can change the file access mode (DAX or page
     cache) on the fly"

* tag 'vfs-5.8-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  fs: Introduce DCACHE_DONTCACHE
  fs: Lift XFS_IDONTCACHE to the VFS layer
2020-06-02 19:48:41 -07:00
Linus Torvalds
96ed320d52 New code for 5.8:
- Clean up io_is_direct.
 - Add a new statx flag to indicate when file data access is being done
   via DAX (as opposed to the page cache).
 - Update the documentation for how system administrators and application
   programmers can take advantage of the (still experimental DAX) feature.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl6wO7UACgkQ+H93GTRK
 tOtEaw//eShC2YE0S+GS7ihQ3x71PJa4Is0VZOIpTHl01aqMSegwB3QbDQbVUhn1
 TzLhUw4pZsz3R9GbUOrfHOYRt+aSP2t0WNhIulDeBp41CYJQSaFt85KnfM9hoBOi
 VYssum3Lu7/6ReKrDD/mumzWYkts+JDCuXRmt7nOQeZJVNXOCBBbvN354V4/IKLY
 wB4Wnaq3f3gYniXYW/23aCX+kocaOIUZtK6aFKyeD0KvfP5toDlpw1cBVMoM9CmO
 bmEy8vKf4lgFZDLeDMqmWOecMgEH5h0baN5Psu13WuDCiCd6maBl0KpxVpVlwsep
 yVz6mMbZjmLOJ2lqyw+lZb+XicD+K3yRVSTGKxV3VbuRjeX9tjVG5Im13VesNvJB
 WWJq/CkOU8W0Zs7Q5RbUDGbFFWDJSI/OStAU+UeuWvL9Gndv7hqv6H904qbPPtEu
 4m4Y34ARzrEaKpkABKKwQ53cLClNxmmgUN9N3cXK3mk8idlX4zM3j6+HJYUxXTO+
 fBjhOlyUy2KaWmzZoJp28QvaU4iegGmMSuRnQ9HAvXmdxUA2K6+wjS6LCZGh04vz
 z7SbzTBlo2kvsKdRMwJ306s2QA0/HvmKHHLI+p8OQANce9hjhE3XdJayzhitd0fk
 k0D/y8OY+fbCSgI8C4g66lA8Zf2sos/ulD0QTTNBPfU2rRWkKUc=
 =rS19
 -----END PGP SIGNATURE-----

Merge tag 'vfs-5.8-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull DAX updates part one from Darrick Wong:
 "After many years of LKML-wrangling about how to enable programs to
  query and influence the file data access mode (DAX) when a filesystem
  resides on storage devices such as persistent memory, Ira Weiny has
  emerged with a proposed set of standard behaviors that has not been
  shot down by anyone! We're more or less standardizing on the current
  XFS behavior and adapting ext4 to do the same.

  This is the first of a handful pull requests that will make ext4 and
  XFS present a consistent interface for user programs that care about
  DAX. We add a statx attribute that programs can check to see if DAX is
  enabled on a particular file. Then, we update the DAX documentation to
  spell out the user-visible behaviors that filesystems will guarantee
  (until the next storage industry shakeup). The on-disk inode flag has
  been in XFS for a few years now.

  Summary:

   - Clean up io_is_direct.

   - Add a new statx flag to indicate when file data access is being
     done via DAX (as opposed to the page cache).

   - Update the documentation for how system administrators and
     application programmers can take advantage of the (still
     experimental DAX) feature"

Link: https://lore.kernel.org/lkml/20200505002016.1085071-1-ira.weiny@intel.com/

* tag 'vfs-5.8-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  Documentation/dax: Update Usage section
  fs/stat: Define DAX statx attribute
  fs: Remove unneeded IS_DAX() check in io_is_direct()
2020-06-02 19:45:12 -07:00
Linus Torvalds
16d91548d1 New code for 5.8:
- Various cleanups to remove dead code, unnecessary conditionals,
       asserts, etc.
     - Fix a linker warning caused by xfs stuffing '-g' into CFLAGS
       redundantly.
     - Tighten up our dmesg logging to ensure that everything is prefixed
       with 'XFS' for easier grepping.
     - Kill a bunch of typedefs.
     - Refactor the deferred ops code to reduce indirect function calls.
     - Increase type-safety with the deferred ops code.
     - Make the DAX mount options a tri-state.
     - Fix some error handling problems in the inode flush code and clean up
       other inode flush warts.
     - Refactor log recovery so that each log item recovery functions now live
       with the other log item processing code.
     - Fix some SPDX forms.
     - Fix quota counter corruption if the fs crashes after running
       quotacheck but before any dquots get logged.
     - Don't fail metadata verification on zero-entry attr leaf blocks, since
       they're just part of the disk format now due to a historic lack of log
       atomicity.
     - Don't allow SWAPEXT between files with different [ugp]id when quotas
       are enabled.
     - Refactor inode fork reading and verification to run directly from the
       inode-from-disk function.  This means that we now actually guarantee
       that _iget'ted inodes are totally verified and ready to go.
     - Move the incore inode fork format and extent counts to the ifork
       structure.
     - Scalability improvements by reducing cacheline pingponging in
       struct xfs_mount.
     - More scalability improvements by removing m_active_trans from the
       hot path.
     - Fix inode counter update sanity checking to run /only/ on debug
       kernels.
     - Fix longstanding inconsistency in what error code we return when a
       program hits project quota limits (ENOSPC).
     - Fix group quota returning the wrong error code when a program hits
       group quota limits.
     - Fix per-type quota limits and grace periods for group and project
       quotas so that they actually work.
     - Allow extension of individual grace periods.
     - Refactor the non-reclaim inode radix tree walking code to remove a
       bunch of stupid little functions and straighten out the
       inconsistent naming schemes.
     - Fix a bug in speculative preallocation where we measured a new
       allocation based on the last extent mapping in the file instead of
       looking farther for the last contiguous space allocation.
     - Force delalloc writes to unwritten extents.  This closes a
       stale disk contents exposure vector if the system goes down before
       the write completes.
     - More lockdep whackamole.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl7OjhgACgkQ+H93GTRK
 tOuGeBAApuP9ohtvrJT9FW7U+OrRsK3lw/3R+MEYpJu8GKLpGbJ6j+SKrTHxxLvu
 Rp63YLIlHBOz2rNa4brm/wW8gGJIGXOnGpuiGq0Irl01xEmwqmjOLfLcYkYhno1E
 i+rG0PiKYZeo/xhLtTKGl+NAwHHxmbOmxUtYHnbinHtPzDyYLQ0wff+oUkmQ7ydg
 bMYFMXohoJ3Pc5UjmUrCuJj1cvYOUwl0P4LGKiq5Zud61AkBCSskEpk+oo5xFcEX
 JJc1xkn5MPi+oGpSYqhnSZ6aSjwp53/i44O9volp5vCRXXv1eLVni2u/ScZ85L72
 HXxoDyuZOUupirIfMBQFHsazDGPGyFIqtPhGlXoTJjrwX+ymimY6CU/0e+Xu9DEu
 krlxajfUssH30zyG2q/2TaxslU35CROH6hVBXFe0Y5cEEsOIf2aOpErUhhw2YyS7
 onN9gb2NBBQdYtHqIMwsbhcgq60g5H6JfGriB5dJimXXLmpuTfAREGCY2AqIoB1x
 +8QFod0WwsMn6FYhi/UpZjC9qp/WTvojBUEt8Ci3ketUFwO1CLf9qm6Hj71RL3fs
 fCEDHx/ZMMft7Bdbf36lICoMAhF/KfNcRn1PsQdpW4LY1Aml/7qjFNZthSVRDW+E
 rhzNu+RIzGEQsSemBvccRaaTP3HFqN+qPATu2K0sALaa1LRFxzQ=
 =/NYc
 -----END PGP SIGNATURE-----

Merge tag 'xfs-5.8-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs updates from Darrick Wong:
 "Most of the changes this cycle are refactoring of existing code in
  preparation for things landing in the future.

  We also fixed various problems and deficiencies in the quota
  implementation, and (I hope) the last of the stale read vectors by
  forcing write allocations to go through the unwritten state until the
  write completes.

  Summary:

   - Various cleanups to remove dead code, unnecessary conditionals,
     asserts, etc.

   - Fix a linker warning caused by xfs stuffing '-g' into CFLAGS
     redundantly.

   - Tighten up our dmesg logging to ensure that everything is prefixed
     with 'XFS' for easier grepping.

   - Kill a bunch of typedefs.

   - Refactor the deferred ops code to reduce indirect function calls.

   - Increase type-safety with the deferred ops code.

   - Make the DAX mount options a tri-state.

   - Fix some error handling problems in the inode flush code and clean
     up other inode flush warts.

   - Refactor log recovery so that each log item recovery functions now
     live with the other log item processing code.

   - Fix some SPDX forms.

   - Fix quota counter corruption if the fs crashes after running
     quotacheck but before any dquots get logged.

   - Don't fail metadata verification on zero-entry attr leaf blocks,
     since they're just part of the disk format now due to a historic
     lack of log atomicity.

   - Don't allow SWAPEXT between files with different [ugp]id when
     quotas are enabled.

   - Refactor inode fork reading and verification to run directly from
     the inode-from-disk function. This means that we now actually
     guarantee that _iget'ted inodes are totally verified and ready to
     go.

   - Move the incore inode fork format and extent counts to the ifork
     structure.

   - Scalability improvements by reducing cacheline pingponging in
     struct xfs_mount.

   - More scalability improvements by removing m_active_trans from the
     hot path.

   - Fix inode counter update sanity checking to run /only/ on debug
     kernels.

   - Fix longstanding inconsistency in what error code we return when a
     program hits project quota limits (ENOSPC).

   - Fix group quota returning the wrong error code when a program hits
     group quota limits.

   - Fix per-type quota limits and grace periods for group and project
     quotas so that they actually work.

   - Allow extension of individual grace periods.

   - Refactor the non-reclaim inode radix tree walking code to remove a
     bunch of stupid little functions and straighten out the
     inconsistent naming schemes.

   - Fix a bug in speculative preallocation where we measured a new
     allocation based on the last extent mapping in the file instead of
     looking farther for the last contiguous space allocation.

   - Force delalloc writes to unwritten extents. This closes a stale
     disk contents exposure vector if the system goes down before the
     write completes.

   - More lockdep whackamole"

* tag 'xfs-5.8-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (129 commits)
  xfs: more lockdep whackamole with kmem_alloc*
  xfs: force writes to delalloc regions to unwritten
  xfs: refactor xfs_iomap_prealloc_size
  xfs: measure all contiguous previous extents for prealloc size
  xfs: don't fail unwritten extent conversion on writeback due to edquot
  xfs: rearrange xfs_inode_walk_ag parameters
  xfs: straighten out all the naming around incore inode tree walks
  xfs: move xfs_inode_ag_iterator to be closer to the perag walking code
  xfs: use bool for done in xfs_inode_ag_walk
  xfs: fix inode ag walk predicate function return values
  xfs: refactor eofb matching into a single helper
  xfs: remove __xfs_icache_free_eofblocks
  xfs: remove flags argument from xfs_inode_ag_walk
  xfs: remove xfs_inode_ag_iterator_flags
  xfs: remove unused xfs_inode_ag_iterator function
  xfs: replace open-coded XFS_ICI_NO_TAG
  xfs: move eofblocks conversion function to xfs_ioctl.c
  xfs: allow individual quota grace period extension
  xfs: per-type quota timers and warn limits
  xfs: switch xfs_get_defquota to take explicit type
  ...
2020-06-02 19:21:40 -07:00
Linus Torvalds
d9afbb3509 Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull lockdown update from James Morris:
 "An update for the security subsystem to allow unprivileged users
  to see the status of the lockdown feature. From Jeremy Cline"

Also an added comment to describe CAP_SETFCAP.

* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  capabilities: add description for CAP_SETFCAP
  lockdown: Allow unprivileged users to see lockdown status
2020-06-02 17:36:24 -07:00
Linus Torvalds
f41030a20b selinux/stable-5.8 PR 20200601
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAl7VnLoUHHBhdWxAcGF1
 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXPkjA//fHFbgHBbiZrS7v/vi61wdpEtGzmn
 /hr4Z5DpFmJdCTGeGItST8Xq4KEqlLGrMclk+PsG0H7BMJEEp+0XJ+begqNvC8PF
 +JzP+oBqoO0SoF5z0jOnBBtzK8R3vmVgcPO3dNdEgNBQG3T7/GQLUTX8DylBDOI1
 yFeuewRD7sK/rIg/S6t+B0ut7Uer5CjEIed4iQZ3eKIUqE6/C1zpmQj98MH9L5uh
 yN0tdF8aOZvgD6v1bfmvgAnnODFvvKcogDn+hvbqRhrDdhgt1DAErIjYeqRemQRc
 g7Xve4i7VivXC4o8nhUy00FWqzCB5tcydR0cwgg4iR/JgKvn18s0vRQV9SU7Nt+o
 pXOex6qHlFCJpjTop+DCBEkGK9V7UBMM6t6gwR/bpkDMYkgIjJrCIQTyw8/HrKKt
 fntryXf9juM0Owh/YOp5jKXPddhkfuztViJ+FnxsI2sho643Gg6/Wfy2slvJ0udH
 i0bnnacW/6pysf/eLrPsF89IacAGydkhdZwaSno3GLyCtXxrqJU4cs2wSpUq0Wiz
 g4kB4hpPXgrQszLriEsF0gRVcRu2nOF4ISXlUqfSw7i/nFT7+axYUjgBg9PpV1Mj
 GyLBSOQp1xs4S/oglfJ5nE4UtS4m187t4JVWOxfqqyWE/O2cqUPtaS+52m0aIWTH
 6HFWbmL5+Dxsm+4=
 =A+bX
 -----END PGP SIGNATURE-----

Merge tag 'selinux-pr-20200601' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull SELinux updates from Paul Moore:
 "The highlights:

   - A number of improvements to various SELinux internal data
     structures to help improve performance. We move the role
     transitions into a hash table. In the content structure we shift
     from hashing the content string (aka SELinux label) to the
     structure itself, when it is valid. This last change not only
     offers a speedup, but it helps us simplify the code some as well.

   - Add a new SELinux policy version which allows for a more space
     efficient way of storing the filename transitions in the binary
     policy. Given the default Fedora SELinux policy with the unconfined
     module enabled, this change drops the policy size from ~7.6MB to
     ~3.3MB. The kernel policy load time dropped as well.

   - Some fixes to the error handling code in the policy parser to
     properly return error codes when things go wrong"

* tag 'selinux-pr-20200601' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: netlabel: Remove unused inline function
  selinux: do not allocate hashtabs dynamically
  selinux: fix return value on error in policydb_read()
  selinux: simplify range_write()
  selinux: fix error return code in policydb_read()
  selinux: don't produce incorrect filename_trans_count
  selinux: implement new format of filename transitions
  selinux: move context hashing under sidtab
  selinux: hash context structure directly
  selinux: store role transitions in a hash table
  selinux: drop unnecessary smp_load_acquire() call
  selinux: fix warning Comparison to bool
2020-06-02 17:16:47 -07:00
Linus Torvalds
9d99b1647f audit/stable-5.8 PR 20200601
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAl7VnKEUHHBhdWxAcGF1
 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXMbHA/+PQmrPdzPvkLAjjf1y3LXvyEIAXIQ
 h2r8SxHa7iGyF6vVPz+ya7ux0KAm8wCVdfkokWG5jxjwK7pysS6gx9JzBVK7dbhD
 FsKBSoq9+to9fYlaCyX7vn85C7kK5oGrwS/ECos0BHBpij8ukLgvPQu+PDs7d4xW
 1X2Nrgqnc7M4L8ayzXTQX0fDWcOkapzaN86+R+Lavb4hO/FownaYbuCFn+1mdzux
 ZNBpt3/y1pM6vi5YBkI1rkauBCmkl/YSX/mf/EwDNlQ0XmcadGQ6z7iwjyiE826g
 etCHWD3cgQH7Zzz6CxBNX8Xbq0nIQueHHiFYpVyy9lf4xleFvnfFDebrs8Q9TB6G
 jTWU8okioUKPZyRDaRuIAmCf/LBQRsMkIYTU3w6J0ZqsBycTw3NXPiQArmlxZESM
 HquxWpKoZytRiw581hiSGKNqY+R3FvA+Jroc/7bWfNOE3IdFxegvCsC3giKJf1rY
 AlQitehql9a5jp7A57+477WRYOygYRnd+ntMD5KqR90QSIcQXeg0/lFKhco+zc2p
 bXbWLE+aaOTGCeC+3Eow3T7FMWmrIn6ccKgM84+WT7YQYtRqUYu3RIZbnlYXN7uH
 8xGXT6ccPcEwIjgyF87J0KyGhrbT1N91Jd2jMJkEry9OLAn/yr+pUBQtAa456MMi
 JYevS4atZaUqgvw=
 =iLfC
 -----END PGP SIGNATURE-----

Merge tag 'audit-pr-20200601' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:
 "Summary of the significant patches:

   - Record information about binds/unbinds to the audit multicast
     socket. This helps identify which processes have/had access to the
     information in the audit stream.

   - Cleanup and add some additional information to the netfilter
     configuration events collected by audit.

   - Fix some of the audit error handling code so we don't leak network
     namespace references"

* tag 'audit-pr-20200601' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: add subj creds to NETFILTER_CFG record to
  audit: Replace zero-length array with flexible-array
  audit: make symbol 'audit_nfcfgs' static
  netfilter: add audit table unregister actions
  audit: tidy and extend netfilter_cfg x_tables
  audit: log audit netlink multicast bind and unbind
  audit: fix a net reference leak in audit_list_rules_send()
  audit: fix a net reference leak in audit_send_reply()
2020-06-02 17:13:37 -07:00
Linus Torvalds
91681e8480 One patch for suppressing coccicheck's warning.
tomoyo: use true for bool variable
 
  security/tomoyo/common.c |    2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJe1Gl6AAoJEEJfEo0MZPUqLeEQAIzmGMKXvt1eFtJzpBWDJe6K
 Z9IPCZ2LvNKuY/Ph8pDhv49PzhbBwpyW/z9ixLjShZXfqPPUkhepBbsM5HU0IgbQ
 bAUGFEd2YTYKZmLArVghzP9jxaKohUnU4d6XsEzvXdcZ9r5yZuTf3QnTlM+DI6Ht
 11tOp8ybG/D1y1LsuLvDvSq4Z7y45ZE6aGD/JosjrIjJTsXqiLmbPvC5f2XL3/jH
 7B0i5QAyv4egj4YtWwY7kY0mLj/6U596pSCakalyvJV30L3r42LddVwSN14uvKxY
 K+OyVJ23B7ytqYynKQVLleY70fhoN3v52D20BQ/IpFkgvD9wMjXariLrNcJPGcPH
 vA/iZZ/Bawc2XUIB5a2Q7K2TjiDQa2RMTJCWouEJm67ybaG+cDnmn/3OG9YXR5Yi
 joJ7F9eIXWtINee8lE9kRzSHsDqA06bYkY+MncoLtzXhzOfFDbrKIoNiRnyuI0qb
 Rr+AUCCigcEjQFz0bc/I3Z+Ab94BaZovO0iELQvsdiMtnvA4wzmG8zddHUOH089z
 UcGEXMknut6ioMZqZWt+FDd4Is5oeqySfv1XvXEY6bui5qbVtXNxfZSj6HctvzJX
 AtJ8/9Tuf/82e5Fs1Sqmzo1hKE4qi8VJWdAGCe2dwcwdgR1vrbimDUMvg0DomAIf
 +Ap0aHQMV5b3pjbMuq91
 =VyNS
 -----END PGP SIGNATURE-----

Merge tag 'tomoyo-pr-20200601' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1

Pull tomoyo update from Tetsuo Handa:
 "One patch for suppressing coccicheck's warning"

* tag 'tomoyo-pr-20200601' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1:
  tomoyo: use true for bool variable
2020-06-02 17:12:07 -07:00
Stefan Hajnoczi
56f2e3b7d8 capabilities: add description for CAP_SETFCAP
Document the purpose of CAP_SETFCAP.  For some reason this capability
had no description while the others did.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
2020-06-02 16:22:46 -07:00
Linus Torvalds
1ee08de1e2 for-5.8/io_uring-2020-06-01
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl7VP+kQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpuK4D/0XsSG/Yirbba1rrbqw/qpw9xcAs9oyN0tS
 8SmmGN27ghrkVSsGBXNcG+PSTu3pkkLjYZ6TQtKamrya9G+lRAsKRsQ+Yq+7Qv4e
 N6lCUlLJ99KqTMtwvIoxSpA1tz3ENHucOw2cJrw3kd9G0kil7GvDkIOBasd+kmwn
 ak+mnMJZzRhqSM7M5lKQOk8l92gKBHGbPy4xKb0st3dQkYptDvit0KcNSAuevtOp
 sRZpdbXaT3FA6xa5iEgggI6vZQGVmK1EaGoQqZ8vgVo75aovkjZyQWWiFVVOlEqr
 QjUCCQuixcbMRbZjgpojqva5nmLhFVhLCfoSH2XgttEQZhmTwypdRwM2/IlxV5q2
 xCofrDkhYOfIgHkuP6p68ukIPIfQ+4jotvsmXZ/HeD/xbx3TRyJRZadISr6wiuLm
 7zRXWaGCYomUIPJOOrpBQ9FsCglkaN63oB6VGuGKTg3g7kE2QrZ2/aGuexP+FAdh
 OrA8BlzxZzpqMKhjQVKOl9r6FU928MZn8nIAkMdQ/Ia1mOpb4rrPo4qCdf+tbhPO
 pmKtQPQjbszQ3UfTgShvfvDk43BeRim1DxZPFTauSu1FMpqWBCwQgXMynPFrf5TR
 HXF61G+jw5swDW6uJgW7bXdm7hHr15vRqQr54MgGS+T0OOa1df9MR0dJB5CGklfI
 ycLU6AAT+A==
 =A/qA
 -----END PGP SIGNATURE-----

Merge tag 'for-5.8/io_uring-2020-06-01' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:
 "A relatively quiet round, mostly just fixes and code improvements. In
particular:

   - Make statx just use the generic statx handler, instead of open
     coding it. We don't need that anymore, as we always call it async
     safe (Bijan)

   - Enable closing of the ring itself. Also fixes O_PATH closure (me)

   - Properly name completion members (me)

   - Batch reap of dead file registrations (me)

   - Allow IORING_OP_POLL with double waitqueues (me)

   - Add tee(2) support (Pavel)

   - Remove double off read (Pavel)

   - Fix overflow cancellations (Pavel)

   - Improve CQ timeouts (Pavel)

   - Async defer drain fixes (Pavel)

   - Add support for enabling/disabling notifications on a registered
     eventfd (Stefano)

   - Remove dead state parameter (Xiaoguang)

   - Disable SQPOLL submit on dying ctx (Xiaoguang)

   - Various code cleanups"

* tag 'for-5.8/io_uring-2020-06-01' of git://git.kernel.dk/linux-block: (29 commits)
  io_uring: fix overflowed reqs cancellation
  io_uring: off timeouts based only on completions
  io_uring: move timeouts flushing to a helper
  statx: hide interfaces no longer used by io_uring
  io_uring: call statx directly
  statx: allow system call to be invoked from io_uring
  io_uring: add io_statx structure
  io_uring: get rid of manual punting in io_close
  io_uring: separate DRAIN flushing into a cold path
  io_uring: don't re-read sqe->off in timeout_prep()
  io_uring: simplify io_timeout locking
  io_uring: fix flush req->refs underflow
  io_uring: don't submit sqes when ctx->refs is dying
  io_uring: async task poll trigger cleanup
  io_uring: add tee(2) support
  splice: export do_tee()
  io_uring: don't repeat valid flag list
  io_uring: rename io_file_put()
  io_uring: remove req->needs_fixed_files
  io_uring: cleanup io_poll_remove_one() logic
  ...
2020-06-02 15:42:50 -07:00
Linus Torvalds
bce159d734 for-5.8/drivers-2020-06-01
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl7VPc4QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpgQkEACnQlzWOfNQMz1AzgUAv/S8IYDJCLrkbjLZ
 JK4pJv8Hjhss/7sS+fd8kyKe9VtaZz2IjmrXcC66RMMwtpx4iHnkRffoNAgEdGOl
 /M5TCZGhs+F/mp3Lc0WdR5DFHkM6yy2Tkk9wCFLreB4bW67janAWnd7nbU4INqJj
 +WqIgpzNMc/kfUhpBYTeQLORhL4e2TG9ADTi/zeUITlpnEsA65LOgXKEpeIFYnSX
 KTl4GIZ9tjazG3Y1Eva7DYHDIErNNAtX67KBqf+WBgMV98eB0O6xIPN1WlmhDTqj
 FGMLkb8msH1HHntvxDAuc4/ortnUy8vPI4o6zKP89HJJNjIM5p5eHEuVF5JnBw42
 Rtu9Om6JqWx51nhAhJNBj9bUStYbhEl0vVQCwbkfPbDJhzTy3RR8z709q9+ZwOrL
 xbp4aJBzqrzscjBEiSQbNCf2PyuOAdU0r1x81UN81ZN41d5qUcumcinjw4Y7vru8
 z5zMlo1Iy/AWQYyu7jgHmnpI7ZyA/1Qclo5dV7aa72bLFaJa35e7QxgfQOFBA5dY
 UZl6QPJRlnB80uGRzD5jCh2O2sQ3XZqYnpaKsUAka1GgbceCp9IC4A5mfZvpACsh
 Xk8VXjlhvY/iPJsKLqrh4Oedg4Dj5M3PLL9C3MDfYeIP2qgXpbnk87UV1TPNSpY0
 QcTxsXXXIw==
 =H+/Z
 -----END PGP SIGNATURE-----

Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
 "On top of the core changes, here are the block driver changes for this
  merge window:

   - NVMe changes:
        - NVMe over Fibre Channel protocol updates, which also reach
          over to drivers/scsi/lpfc (James Smart)
        - namespace revalidation support on the target (Anthony
          Iliopoulos)
        - gcc zero length array fix (Arnd Bergmann)
        - nvmet cleanups (Chaitanya Kulkarni)
        - misc cleanups and fixes (me, Keith Busch, Sagi Grimberg)
        - use a SRQ per completion vector (Max Gurtovoy)
        - fix handling of runtime changes to the queue count (Weiping
          Zhang)
        - t10 protection information support for nvme-rdma and
          nvmet-rdma (Israel Rukshin and Max Gurtovoy)
        - target side AEN improvements (Chaitanya Kulkarni)
        - various fixes and minor improvements all over, icluding the
          nvme part of the lpfc driver"

   - Floppy code cleanup series (Willy, Denis)

   - Floppy contention fix (Jiri)

   - Loop CONFIGURE support (Martijn)

   - bcache fixes/improvements (Coly, Joe, Colin)

   - q->queuedata cleanups (Christoph)

   - Get rid of ioctl_by_bdev (Christoph, Stefan)

   - md/raid5 allocation fixes (Coly)

   - zero length array fixes (Gustavo)

   - swim3 task state fix (Xu)"

* tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block: (166 commits)
  bcache: configure the asynchronous registertion to be experimental
  bcache: asynchronous devices registration
  bcache: fix refcount underflow in bcache_device_free()
  bcache: Convert pr_<level> uses to a more typical style
  bcache: remove redundant variables i and n
  lpfc: Fix return value in __lpfc_nvme_ls_abort
  lpfc: fix axchg pointer reference after free and double frees
  lpfc: Fix pointer checks and comments in LS receive refactoring
  nvme: set dma alignment to qword
  nvmet: cleanups the loop in nvmet_async_events_process
  nvmet: fix memory leak when removing namespaces and controllers concurrently
  nvmet-rdma: add metadata/T10-PI support
  nvmet: add metadata support for block devices
  nvmet: add metadata/T10-PI support
  nvme: add Metadata Capabilities enumerations
  nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len
  nvmet: rename nvmet_rw_len to nvmet_rw_data_len
  nvmet: add metadata characteristics for a namespace
  nvme-rdma: add metadata/T10-PI support
  nvme-rdma: introduce nvme_rdma_sgl structure
  ...
2020-06-02 15:37:03 -07:00
Linus Torvalds
750a02ab8d for-5.8/block-2020-06-01
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl7VOwMQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpoR7EADAlz3TCkb4wwuHytTBDrm6gVDdsJ9zUfQW
 Cl2ASLtufA8PWZUCEI3vhFyOe6P5e+ZZ0O2HjljSevmHyogCaRYXFYVfbWKcQKuk
 AcxiTgnYNevh8KbGLfJY1WL4eXsY+C3QUGivg35cCgrx+kr9oDaHMeqA9Tm1plyM
 FSprDBoSmHPqRxiV/1gnr8uXLX6K7i/fHzwmKgySMhavum7Ma8W3wdAGebzvQwrO
 SbFSuJVgz06e4B1Fzr/wSvVNUE/qW/KqfGuQKIp7VQFIywbgG7TgRMHjE1FSnpnh
 gn+BfL+O5gc0sTvcOTGOE0SRWWwLx961WNg8Azq08l3fzsxLA6h8/AnoDf3i+QMA
 rHmLpWZIic2xPSvjaFHX3/V9ITyGYeAMpAR77EL+4ivWrKv5JrBhnSLDt1fKILdg
 5elxm7RDI+C4nCP4xuTlVCy5gCd6gwjgytKj+NUWhNq1WiGAD0B54SSiV+SbCSH6
 Om2f5trcxz8E4pqWcf0k3LjFapVKRNV8v/+TmVkCdRPBl3y9P0h0wFTkkcEquqnJ
 y7Yq6efdWviRCnX5w/r/yj0qBuk4xo5hMVsPmlthCWtnBm+xZQ6LwMRcq4HQgZgR
 2SYNscZ3OFMekHssH7DvY4DAy1J+n83ims+KzbScbLg2zCZjh/scQuv38R5Eh9WZ
 rCS8c+T7Ig==
 =HYf4
 -----END PGP SIGNATURE-----

Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:
 "Core block changes that have been queued up for this release:

   - Remove dead blk-throttle and blk-wbt code (Guoqing)

   - Include pid in blktrace note traces (Jan)

   - Don't spew I/O errors on wouldblock termination (me)

   - Zone append addition (Johannes, Keith, Damien)

   - IO accounting improvements (Konstantin, Christoph)

   - blk-mq hardware map update improvements (Ming)

   - Scheduler dispatch improvement (Salman)

   - Inline block encryption support (Satya)

   - Request map fixes and improvements (Weiping)

   - blk-iocost tweaks (Tejun)

   - Fix for timeout failing with error injection (Keith)

   - Queue re-run fixes (Douglas)

   - CPU hotplug improvements (Christoph)

   - Queue entry/exit improvements (Christoph)

   - Move DMA drain handling to the few drivers that use it (Christoph)

   - Partition handling cleanups (Christoph)"

* tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block: (127 commits)
  block: mark bio_wouldblock_error() bio with BIO_QUIET
  blk-wbt: rename __wbt_update_limits to wbt_update_limits
  blk-wbt: remove wbt_update_limits
  blk-throttle: remove tg_drain_bios
  blk-throttle: remove blk_throtl_drain
  null_blk: force complete for timeout request
  blk-mq: drain I/O when all CPUs in a hctx are offline
  blk-mq: add blk_mq_all_tag_iter
  blk-mq: open code __blk_mq_alloc_request in blk_mq_alloc_request_hctx
  blk-mq: use BLK_MQ_NO_TAG in more places
  blk-mq: rename BLK_MQ_TAG_FAIL to BLK_MQ_NO_TAG
  blk-mq: move more request initialization to blk_mq_rq_ctx_init
  blk-mq: simplify the blk_mq_get_request calling convention
  blk-mq: remove the bio argument to ->prepare_request
  nvme: force complete cancelled requests
  blk-mq: blk-mq: provide forced completion method
  block: fix a warning when blkdev.h is included for !CONFIG_BLOCK builds
  block: blk-crypto-fallback: remove redundant initialization of variable err
  block: reduce part_stat_lock() scope
  block: use __this_cpu_add() instead of access by smp_processor_id()
  ...
2020-06-02 15:29:19 -07:00
Hugh Dickins
1966391fa5 mm/migrate.c: attach_page_private already does the get_page
Just finished bisecting mmotm, to find why a test which used to take
four minutes now took more than an hour: the __buffer_migrate_page()
cleanup left behind a get_page() which attach_page_private() now does.

Fixes: cd0f371544 ("mm/migrate.c: call detach_page_private to cleanup code")
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 15:19:42 -07:00
Linus Torvalds
faa392181a drm pull for 5.8-rc1
core:
 - uapi: error out EBUSY when existing master
 - uapi: rework SET/DROP MASTER permission handling
 - remove drm_pci.h
 - drm_pci* are now legacy
 - introduced managed DRM resources
 - subclassing support for drm_framebuffer
 - simple encoder helper
 - edid improvements
 - vblank + writeback documentation improved
 - drm/mm - optimise tree searches
 - port drivers to use devm_drm_dev_alloc
 
 dma-buf:
 - add flag for p2p buffer support
 
 mst:
 - ACT timeout improvements
 - remove drm_dp_mst_has_audio
 - don't use 2nd TX slot - spec recommends against it
 
 bridge:
 - dw-hdmi various improvements
 - chrontel ch7033 support
 - fix stack issues with old gcc
 
 hdmi:
 - add unpack function for drm infoframe
 
 fbdev:
 - misc fbdev driver fixes
 
 i915:
 - uapi: global sseu pinning
 - uapi: OA buffer polling
 - uapi: remove generated perf code
 - uapi: per-engine default property values in sysfs
 - Tigerlake GEN12 enabled.
 - Lots of gem refactoring
 - Tigerlake enablement patches
 - move to drm_device logging
 - Icelake gamma HW readout
 - push MST link retrain to hotplug work
 - bandwidth atomic helpers
 - ICL fixes
 - RPS/GT refactoring
 - Cherryview full-ppgtt support
 - i915 locking guidelines documented
 - require linear fb stride to be 512 multiple on gen9
 - Tigerlake SAGV support
 
 amdgpu:
 - uapi: encrypted GPU memory handling
 - uapi: add MEM_SYNC IB flag
 - p2p dma-buf support
 - export VRAM dma-bufs
 - FRU chip access support
 - RAS/SR-IOV updates
 - Powerplay locking fixes
 - VCN DPG (powergating) enablement
 - GFX10 clockgating fixes
 - DC fixes
 - GPU reset fixes
 - navi SDMA fix
 - expose FP16 for modesetting
 - DP 1.4 compliance fixes
 - gfx10 soft recovery
 - Improved Critical Thermal Faults handling
 - resizable BAR on gmc10
 
 amdkfd:
 - uapi: GWS resource management
 - track GPU memory per process
 - report PCI domain in topology
 
 radeon:
 - safe reg list generator fixes
 
 nouveau:
 - HD audio fixes on recent systems
 - vGPU detection (fail probe if we're on one, for now)
 - Interlaced mode fixes (mostly avoidance on Turing, which doesn't support it)
 - SVM improvements/fixes
 - NVIDIA format modifier support
 - Misc other fixes.
 
 adv7511:
 - HDMI SPDIF support
 
 ast:
 - allocate crtc state size
 - fix double assignment
 - fix suspend
 
 bochs:
 - drop connector register
 
 cirrus:
 - move to tiny drivers.
 
 exynos:
 - fix imported dma-buf mapping
 - enable runtime PM
 - fixes and cleanups
 
 mediatek:
 - DPI pin mode swap
 - config mipi_tx current/impedance
 
 lima:
 - devfreq + cooling device support
 - task handling improvements
 - runtime PM support
 
 pl111:
 - vexpress init improvements
 - fix module auto-load
 
 rcar-du:
 - DT bindings conversion to YAML
 - Planes zpos sanity check and fix
 - MAINTAINERS entry for LVDS panel driver
 
 mcde:
 - fix return value
 
 mgag200:
 - use managed config init
 
 stm:
 - read endpoints from DT
 
 vboxvideo:
 - use PCI managed functions
 - drop WC mtrr
 
 vkms:
 - enable cursor by default
 
 rockchip:
 - afbc support
 
 virtio:
 - various cleanups
 
 qxl:
 - fix cursor notify port
 
 hisilicon:
 - 128-byte stride alignment fix
 
 sun4i:
 - improved format handling
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJe1edsAAoJEAx081l5xIa+bKEQAJAZv/8OMM2rx+p+GyKgrNpl
 ihTX/oyToy8dw97s1kWF7V5kKU+qjF8aWlKoPS0xovzaMAzYSFz9FRNEUgqtTXMI
 zIAzSXioqP21oL9/ZTHcXDULtz8Gk3uiPomgXMWLlNBdt3X5qvCwsmPRIYSwG0GJ
 00VCvxDbVxGSM3wzcvbfyRwHCq3SrFvIusXv5jHnnxEFGH0C7Mj2/FLYMKLNjvli
 Q8VEI2wQPZj1QdA8fLFVneIQsR6YUSko9OfFMANP8VJGpPMnUkvVxTJ5ACGJspvn
 U/h6NYqJeUU2Y3BSKqtjIC3a1LY51tp5tL9q4H9TD1hqMckt6F2V7T2IeFU8i6+V
 YzUsSiT4q1xB+uiFVcgopx2hyIp8INOEyWrVdYgw2JviROeRD+pDHvJd13ZNMnTe
 GvLWQ/PfBFrcz8eligjiYjOf66ZTU+j/rivaOBFyrs9gdlsaEW2QRurFrcNX+0lZ
 kDbLsIFjhYnPXsvHP87x4BuQCKQIEh8wWuxXuJjunBPdqVrJyltZWbBiKO571b5/
 BtX6xj6ztUOffR2RdiVanzY546I2hEi7SHMUuWnMqXsOV46GBN0QvlpZad/47n9x
 ZUy8HDDD0/qWuGwvPOJGIeAnUteWge9AhWXTeN5+1h5m+QEOzYkPKqC3Hp8TW1pM
 gToTWgAhnu731fhzLWyt
 =H7IS
 -----END PGP SIGNATURE-----

Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights:

   - Core DRM had a lot of refactoring around managed drm resources to
     make drivers simpler.

   - Intel Tigerlake support is on by default

   - amdgpu now support p2p PCI buffer sharing and encrypted GPU memory

  Details:

  core:
   - uapi: error out EBUSY when existing master
   - uapi: rework SET/DROP MASTER permission handling
   - remove drm_pci.h
   - drm_pci* are now legacy
   - introduced managed DRM resources
   - subclassing support for drm_framebuffer
   - simple encoder helper
   - edid improvements
   - vblank + writeback documentation improved
   - drm/mm - optimise tree searches
   - port drivers to use devm_drm_dev_alloc

  dma-buf:
   - add flag for p2p buffer support

  mst:
   - ACT timeout improvements
   - remove drm_dp_mst_has_audio
   - don't use 2nd TX slot - spec recommends against it

  bridge:
   - dw-hdmi various improvements
   - chrontel ch7033 support
   - fix stack issues with old gcc

  hdmi:
   - add unpack function for drm infoframe

  fbdev:
   - misc fbdev driver fixes

  i915:
   - uapi: global sseu pinning
   - uapi: OA buffer polling
   - uapi: remove generated perf code
   - uapi: per-engine default property values in sysfs
   - Tigerlake GEN12 enabled.
   - Lots of gem refactoring
   - Tigerlake enablement patches
   - move to drm_device logging
   - Icelake gamma HW readout
   - push MST link retrain to hotplug work
   - bandwidth atomic helpers
   - ICL fixes
   - RPS/GT refactoring
   - Cherryview full-ppgtt support
   - i915 locking guidelines documented
   - require linear fb stride to be 512 multiple on gen9
   - Tigerlake SAGV support

  amdgpu:
   - uapi: encrypted GPU memory handling
   - uapi: add MEM_SYNC IB flag
   - p2p dma-buf support
   - export VRAM dma-bufs
   - FRU chip access support
   - RAS/SR-IOV updates
   - Powerplay locking fixes
   - VCN DPG (powergating) enablement
   - GFX10 clockgating fixes
   - DC fixes
   - GPU reset fixes
   - navi SDMA fix
   - expose FP16 for modesetting
   - DP 1.4 compliance fixes
   - gfx10 soft recovery
   - Improved Critical Thermal Faults handling
   - resizable BAR on gmc10

  amdkfd:
   - uapi: GWS resource management
   - track GPU memory per process
   - report PCI domain in topology

  radeon:
   - safe reg list generator fixes

  nouveau:
   - HD audio fixes on recent systems
   - vGPU detection (fail probe if we're on one, for now)
   - Interlaced mode fixes (mostly avoidance on Turing, which doesn't support it)
   - SVM improvements/fixes
   - NVIDIA format modifier support
   - Misc other fixes.

  adv7511:
   - HDMI SPDIF support

  ast:
   - allocate crtc state size
   - fix double assignment
   - fix suspend

  bochs:
   - drop connector register

  cirrus:
   - move to tiny drivers.

  exynos:
   - fix imported dma-buf mapping
   - enable runtime PM
   - fixes and cleanups

  mediatek:
   - DPI pin mode swap
   - config mipi_tx current/impedance

  lima:
   - devfreq + cooling device support
   - task handling improvements
   - runtime PM support

  pl111:
   - vexpress init improvements
   - fix module auto-load

  rcar-du:
   - DT bindings conversion to YAML
   - Planes zpos sanity check and fix
   - MAINTAINERS entry for LVDS panel driver

  mcde:
   - fix return value

  mgag200:
   - use managed config init

  stm:
   - read endpoints from DT

  vboxvideo:
   - use PCI managed functions
   - drop WC mtrr

  vkms:
   - enable cursor by default

  rockchip:
   - afbc support

  virtio:
   - various cleanups

  qxl:
   - fix cursor notify port

  hisilicon:
   - 128-byte stride alignment fix

  sun4i:
   - improved format handling"

* tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm: (1401 commits)
  drm/amd/display: Fix potential integer wraparound resulting in a hang
  drm/amd/display: drop cursor position check in atomic test
  drm/amdgpu: fix device attribute node create failed with multi gpu
  drm/nouveau: use correct conflicting framebuffer API
  drm/vblank: Fix -Wformat compile warnings on some arches
  drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode
  drm/amd/display: Handle GPU reset for DC block
  drm/amdgpu: add apu flags (v2)
  drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven
  drm/amdgpu: fix pm sysfs node handling (v2)
  drm/amdgpu: move gpu_info parsing after common early init
  drm/amdgpu: move discovery gfx config fetching
  drm/nouveau/dispnv50: fix runtime pm imbalance on error
  drm/nouveau: fix runtime pm imbalance on error
  drm/nouveau: fix runtime pm imbalance on error
  drm/nouveau/debugfs: fix runtime pm imbalance on error
  drm/nouveau/nouveau/hmm: fix migrate zero page to GPU
  drm/nouveau/nouveau/hmm: fix nouveau_dmem_chunk allocations
  drm/nouveau/kms/nv50-: Share DP SST mode_valid() handling with MST
  drm/nouveau/kms/nv50-: Move 8BPC limit for MST into nv50_mstc_get_modes()
  ...
2020-06-02 15:04:15 -07:00
Linus Torvalds
cfa3b8068b hmm related patches for 5.8
This series adds a selftest for hmm_range_fault() and several of the
 DEVICE_PRIVATE migration related actions, and another simplification for
 hmm_range_fault()'s API.
 
 - Simplify hmm_range_fault() with a simpler return code, no
   HMM_PFN_SPECIAL, and no customizable output PFN format
 
 - Add a selftest for hmm_range_fault() and DEVICE_PRIVATE related
   functionality
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEfB7FMLh+8QxL+6i3OG33FX4gmxoFAl7VQr8ACgkQOG33FX4g
 mxrpcg/+O+oZ2p8FDTZi/0BTaU0crUiKwJngmmv78UuvD8nzhOZ0fkhK2lsXn9Uo
 70lYbfDUSX2TbReP7y39VArW0v+Bj7wo9/7AZ+R2o5A0ajC6kccjGdnb7uEc3L6v
 CR+uumRYf/ZNz13cbuRBbYEz477DGnz+3vhBb4FLNTFj9XiNAC61jA1WUI0ep6x3
 lDrkhDatqmdBJ+EqZDMq2+UH+lWbkptQT7hPqgEp6o7FqdnySxRd+rT3hALz5wNP
 fbryfWXM7V1eh7Kxr2mBJJqIkgbdhGLj2yLl1Iz11BbG6u7AT20r23WTvJ7hUCyt
 18574twdltZ81gheqqN7KVYYAo+5seMfP14QdthqzzBMo3pOeLG0JMVqQNisDPgn
 Tf4lWF/GR7ajKxyRbLdvUgRE7pFQ9VMAiP86GoIpBFmSZQQDwcecnoYxg60zsTwR
 yuf60gopfNsSWNmDqKT3td12PQyFQYHYT6ue1eW6Rb9P+yA++tZaGkvGFn7kHeNV
 ZeUqsKEy6a9l6cDrFzNmsCcdNZg/qmw9mKFfa/4RRulU5jlskt/e52NiLaLU2rsr
 0Tot3j5tMufLLorZPprMI3Z/M9ohVAS5DkX6ttcZDs5v0iGQEUOOnq0cXmwlJQ9I
 0CHr2ImjiDr9v2fS+5ixaRNSHfnQWnHxcqq79UZiTjtPW1Daauo=
 =twev
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull hmm updates from Jason Gunthorpe:
 "This series adds a selftest for hmm_range_fault() and several of the
  DEVICE_PRIVATE migration related actions, and another simplification
  for hmm_range_fault()'s API.

   - Simplify hmm_range_fault() with a simpler return code, no
     HMM_PFN_SPECIAL, and no customizable output PFN format

   - Add a selftest for hmm_range_fault() and DEVICE_PRIVATE related
     functionality"

* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  MAINTAINERS: add HMM selftests
  mm/hmm/test: add selftests for HMM
  mm/hmm/test: add selftest driver for HMM
  mm/hmm: remove the customizable pfn format from hmm_range_fault
  mm/hmm: remove HMM_PFN_SPECIAL
  drm/amdgpu: remove dead code after hmm_range_fault()
  mm/hmm: make hmm_range_fault return 0 or -1
2020-06-02 14:05:27 -07:00
Linus Torvalds
194098915a PNP update for 5.8-rc1
Replace a zero-length array with a flexible-array (Gustavo A. R. Silva).
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl7VGx8SHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRxPG4P/i7HmvEzcKD2Bi2oNscTluGa3e6sOCDm
 d3O8dBVgXjF3cVEJUR6/gs5wct8z4NGgVdK5+ms0AVkZloSrGD9eFykZcJFf0j05
 z6oJXIQNPWRcdOah40lUm1u99iPBRQ5WjRs97+/O/3rm5NiBJUukJ8RApleD9Tue
 ANymVze8Ob06ZyRXrhxJ/gcbGjoaeRO0sGQDBfguQ3EWqzm9bemtmUOIrOxbbY8Z
 jjkojrT8AW76POMomsfwbPlrmXn7cWozTpwqMKmTaBjiBxpCtcRtMmUBd7jLCoXI
 58d9bsIT3q4p9KGl0Ks6JXFmFYaIiY0wivKa1U5Ku7lveHdf7C76clY0e7AFoTxN
 doSf45ABq42wFKOroE9bsoJw4XpNuCtL9/EWdiDK8A59F4fMKYx1G9oscL0MADiz
 AvWdHInxejZDChCDRi2pobOKFXFwoF+PseAT0bXfwu8gumxqdvVaxilikZTCJdzU
 yhkv2cf5sib1eXuQAYEHjgcY69BI9wCQ4jzLzcVtuykSzqXV2pRaWBpRy3zyCAeC
 QbGfro8+Emi9+A3LQqfTgq3TqvYnx4cP3eCOa5PzybYVrZPQjwdF0JF+NUishImF
 HjSmHP4VT3trsfXwxHjpsnfQuJpXOr0LLu0JbCgIeU3fcVczzsFhbGSojAEBYjWy
 owat+NBpbQ4R
 =xRvl
 -----END PGP SIGNATURE-----

Merge tag 'pnp-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull PNP update from Rafael Wysocki:
 "Replace a zero-length array with a flexible-array (Gustavo A. R.
  Silva)"

* tag 'pnp-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PNPBIOS: Replace zero-length array with flexible-array
2020-06-02 13:31:48 -07:00
Linus Torvalds
118d6e9829 ACPI updates for 5.8-rc1
- Update the ACPICA code in the kernel to upstream revision
    20200430:
 
    * Move acpi_gbl_next_cmd_num definition (Erik Kaneda).
 
    * Ignore AE_ALREADY_EXISTS status in the disassembler when parsing
      create operators (Erik Kaneda).
 
    * Add status checks to the dispatcher (Erik Kaneda).
 
    * Fix required parameters for _NIG and _NIH (Erik Kaneda).
 
    * Make acpi_protocol_lengths static (Yue Haibing).
 
  - Fix ACPI table reference counting errors in several places, mostly
    in error code paths (Hanjun Guo).
 
  - Extend the Generic Event Device (GED) driver to support _Exx and
    _Lxx handler methods (Ard Biesheuvel).
 
  - Add new acpi_evaluate_reg() helper and modify the ACPI PCI hotplug
    code to use it (Hans de Goede).
 
  - Add new DPTF battery participant driver and make the DPFT power
    participant driver create more sysfs device attributes (Srinivas
    Pandruvada).
 
  - Improve the handling of memory failures in APEI (James Morse).
 
  - Add new blacklist entry for Acer TravelMate 5735Z to the backlight
    driver (Paul Menzel).
 
  - Add i2c address for thermal control to the PMIC driver (Mauro
    Carvalho Chehab).
 
  - Allow the ACPI processor idle driver to work on platforms with
    only one ACPI C-state present (Zhang Rui).
 
  - Fix kobject reference count leaks in error code paths in two
    places (Qiushi Wu).
 
  - Delete unused proc filename macros and make some symbols static
    (Pascal Terjan, Zheng Zengkai, Zou Wei).
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl7VHb8SHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRxVboQAIjYda2RhQANIlIvoEa+Qd2/FBd3HXgU
 Mv0LZ6y1xxxEZYeKne7zja1hzt5WetuZ1hZHGfg8YkXyrLqZGxfCIFbbhSA90BGG
 PGzFerGmOBNzB3I9SN6iQY7vSqoFHvQEV1PVh24d+aHWZqj2lnaRRq+GT54qbRLX
 /U3Hy5glFl8A/DCBP4cpoEjDr4IJHY68DathkDK2Ep2ybXV6B401uuqx8Su/OBd/
 MQmJTYI1UK/RYBXfdzS9TIZahnkxBbU1cnLFy08Ve2mawl5YsHPEbvm77a0yX2M6
 sOAerpgyzYNivAuOLpNIwhUZjpOY66nQuKAQaEl2cfRUkqt4nbmq7yDoH3d2MJLC
 /Ccz955rV2YyD1DtyV+PyT+HB+/EVwH/+UCZ+gsSbdHvOiwdFU6VaTc2eI1qq8K9
 4m5eEZFrAMPlvTzj/xVxr2Hfw1lbm23J5B5n7sM5HzYbT6MUWRQpvfV4zM3jTGz0
 rQd8JmcHVvZk/MV1mGrYHrN5TnGTLWpbS4Yv1lAQa6FP0N0NxzVud7KRfLKnCnJ1
 vh5yzW2fCYmVulJpuqxJDfXSqNV7n40CFrIewSp6nJRQXnWpImqHwwiA8fl51+hC
 fBL72Ey08EHGFnnNQqbebvNglsodRWJddBy43ppnMHtuLBA/2GVKYf2GihPbpEBq
 NHtX+Rd3vlWW
 =xH3i
 -----END PGP SIGNATURE-----

Merge tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream revision
  20200430, fix several reference counting errors related to ACPI
  tables, add _Exx / _Lxx support to the GED driver, add a new
  acpi_evaluate_reg() helper, add new DPTF battery participant driver
  and extend the DPFT power participant driver, improve the handling of
  memory failures in the APEI code, add a blacklist entry to the
  backlight driver, update the PMIC driver and the processor idle
  driver, fix two kobject reference count leaks, and make a few janitory
  changes.

  Specifics:

   - Update the ACPICA code in the kernel to upstream revision 20200430:

      - Move acpi_gbl_next_cmd_num definition (Erik Kaneda).

      - Ignore AE_ALREADY_EXISTS status in the disassembler when parsing
        create operators (Erik Kaneda).

      - Add status checks to the dispatcher (Erik Kaneda).

      - Fix required parameters for _NIG and _NIH (Erik Kaneda).

      - Make acpi_protocol_lengths static (Yue Haibing).

   - Fix ACPI table reference counting errors in several places, mostly
     in error code paths (Hanjun Guo).

   - Extend the Generic Event Device (GED) driver to support _Exx and
     _Lxx handler methods (Ard Biesheuvel).

   - Add new acpi_evaluate_reg() helper and modify the ACPI PCI hotplug
     code to use it (Hans de Goede).

   - Add new DPTF battery participant driver and make the DPFT power
     participant driver create more sysfs device attributes (Srinivas
     Pandruvada).

   - Improve the handling of memory failures in APEI (James Morse).

   - Add new blacklist entry for Acer TravelMate 5735Z to the backlight
     driver (Paul Menzel).

   - Add i2c address for thermal control to the PMIC driver (Mauro
     Carvalho Chehab).

   - Allow the ACPI processor idle driver to work on platforms with only
     one ACPI C-state present (Zhang Rui).

   - Fix kobject reference count leaks in error code paths in two places
     (Qiushi Wu).

   - Delete unused proc filename macros and make some symbols static
     (Pascal Terjan, Zheng Zengkai, Zou Wei)"

* tag 'acpi-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()
  ACPI: sysfs: Fix reference count leak in acpi_sysfs_add_hotplug_profile()
  ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
  ACPI: DPTF: Add battery participant driver
  ACPI: DPTF: Additional sysfs attributes for power participant driver
  ACPI: video: Use native backlight on Acer TravelMate 5735Z
  arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work
  ACPI: APEI: Kick the memory_failure() queue for synchronous errors
  mm/memory-failure: Add memory_failure_queue_kick()
  ACPI / PMIC: Add i2c address for thermal control
  ACPI: GED: add support for _Exx / _Lxx handler methods
  ACPI: Delete unused proc filename macros
  ACPI: hotplug: PCI: Use the new acpi_evaluate_reg() helper
  ACPI: utils: Add acpi_evaluate_reg() helper
  ACPI: debug: Make two functions static
  ACPI: sleep: Put the FACS table after using it
  ACPI: scan: Put SPCR and STAO table after using it
  ACPI: EC: Put the ACPI table after using it
  ACPI: APEI: Put the HEST table for error path
  ACPI: APEI: Put the error record serialization table for error path
  ...
2020-06-02 13:25:52 -07:00
Linus Torvalds
355ba37d75 Power management updates for 5.8-rc1
- Rework the system-wide PM driver flags to make them easier to
    understand and use and update their documentation (Rafael Wysocki,
    Alan Stern).
 
  - Allow cpuidle governors to be switched at run time regardless of
    the kernel configuration and update the related documentation
    accordingly (Hanjun Guo).
 
  - Improve the resume device handling in the user space hibernarion
    interface code (Domenico Andreoli).
 
  - Document the intel-speed-select sysfs interface (Srinivas
    Pandruvada).
 
  - Make the ACPI code handing suspend to idle print more debug
    messages to help diagnose issues with it (Rafael Wysocki).
 
  - Fix a helper routine in the cpufreq core and correct a typo in
    the struct cpufreq_driver kerneldoc comment (Rafael Wysocki, Wang
    Wenhu).
 
  - Update cpufreq drivers:
 
    * Make the intel_pstate driver start in the passive mode by
      default on systems without HWP (Rafael Wysocki).
 
    * Add i.MX7ULP support to the imx-cpufreq-dt driver and add
      i.MX7ULP to the cpufreq-dt-platdev blacklist (Peng Fan).
 
    * Convert the qoriq cpufreq driver to a platform one, make the
      platform code create a suitable device object for it and add
      platform dependencies to it (Mian Yousaf Kaukab, Geert
      Uytterhoeven).
 
    * Fix wrong compatible binding in the qcom driver (Ansuel Smith).
 
    * Build the omap driver by default for ARCH_OMAP2PLUS (Anders
      Roxell).
 
    * Add r8a7742 SoC support to the dt cpufreq driver (Lad Prabhakar).
 
  - Update cpuidle core and drivers:
 
    * Fix three reference count leaks in error code paths in the
      cpuidle core (Qiushi Wu).
 
    * Convert Qualcomm SPM to a generic cpuidle driver (Stephan
      Gerhold).
 
    * Fix up the execution order when entering a domain idle state in
      the PSCI driver (Ulf Hansson).
 
  - Fix a reference counting issue related to clock management and
    clean up two oddities in the PM-runtime framework (Rafael Wysocki,
    Andy Shevchenko).
 
  - Add ElkhartLake support to the Intel RAPL power capping driver
    and remove an unused local MSR definition from it (Jacob Pan,
    Sumeet Pawnikar).
 
  - Update devfreq core and drivers:
 
    * Replace strncpy() with strscpy() in the devfreq core and use
      lockdep asserts instead of manual checks for a locked mutex in
      it (Dmitry Osipenko, Krzysztof Kozlowski).
 
    * Add a generic imx bus scaling driver and make it register an
      interconnect device (Leonard Crestez, Gustavo A. R. Silva).
 
    * Make the cpufreq notifier in the tegra30 driver take boosting
      into account and delete an unuseful error message from that
      driver (Dmitry Osipenko, Markus Elfring).
 
  - Remove unneeded semicolon from the cpupower code (Zou Wei).
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl7VGjwSHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRx46gP/jGAXlddFEQswi6qUT3Cff0A9mb8CdcX
 dyKrjX4xxo/wtBIAwSN4achxrgse//ayo2dYTzWRDd31W9Azbv+5F+46XsDRz4hL
 pH29u/E66NMtFWnHCmt78NEJn0FzSa0YBC43ZzwFwKktCK9skYIpGN2z6iuXUBSX
 Q5GHqop3zvDsdKQFBGL62xvUw/AmOTPG7ohIZvqWBN2mbOqEqMcoFHT+aUF/NbLj
 +i14dvTH767eDZGRVASmXWQyljjaRWm+SIw4+m8zT1D1Y3d5IFObuMN+9RQl1Tif
 BYjkgJ2oDDMhCJLW7TBuJB+g7exiyaSQds3nMr2ZR+eZbJipICjU4eehNEKIUopU
 DM17tHQfnwZfS/7YbCx3vYQwLkNq37AJyXS9uqCAIFM+0n4xN4/mIVmgWYISLDTs
 1v9olFxtwMRNpjGGQWPJAO7ebB8Zz9qhQv7pIkSQEfwp93/SzvlVf4vvruTeFN9J
 qqG60cDumXWAm+s43eQHJNn5nOd5ocWv0FBpo/cxqKbzxFVWwdB42Cm0SY+rK2ID
 uHdnc2DJcK2c78UVbz3Cmk4272foJt2zxchqjFXXAZPLrOsFfzmti4B28VxGxjmP
 LG3MhH5sdbF4yl/1aSC1Bnrt+PV9Lus6ut/VKhjwIpw8cqiXgpwSbMoDoaBd9UMQ
 ubGz2rplGAtB
 =APdj
 -----END PGP SIGNATURE-----

Merge tag 'pm-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These rework the system-wide PM driver flags, make runtime switching
  of cpuidle governors easier, improve the user space hibernation
  interface code, add intel-speed-select interface documentation, add
  more debug messages to the ACPI code handling suspend to idle, update
  the cpufreq core and drivers, fix a minor issue in the cpuidle core
  and update two cpuidle drivers, improve the PM-runtime framework,
  update the Intel RAPL power capping driver, update devfreq core and
  drivers, and clean up the cpupower utility.

  Specifics:

   - Rework the system-wide PM driver flags to make them easier to
     understand and use and update their documentation (Rafael Wysocki,
     Alan Stern).

   - Allow cpuidle governors to be switched at run time regardless of
     the kernel configuration and update the related documentation
     accordingly (Hanjun Guo).

   - Improve the resume device handling in the user space hibernarion
     interface code (Domenico Andreoli).

   - Document the intel-speed-select sysfs interface (Srinivas
     Pandruvada).

   - Make the ACPI code handing suspend to idle print more debug
     messages to help diagnose issues with it (Rafael Wysocki).

   - Fix a helper routine in the cpufreq core and correct a typo in the
     struct cpufreq_driver kerneldoc comment (Rafael Wysocki, Wang
     Wenhu).

   - Update cpufreq drivers:

      - Make the intel_pstate driver start in the passive mode by
        default on systems without HWP (Rafael Wysocki).

      - Add i.MX7ULP support to the imx-cpufreq-dt driver and add
        i.MX7ULP to the cpufreq-dt-platdev blacklist (Peng Fan).

      - Convert the qoriq cpufreq driver to a platform one, make the
        platform code create a suitable device object for it and add
        platform dependencies to it (Mian Yousaf Kaukab, Geert
        Uytterhoeven).

      - Fix wrong compatible binding in the qcom driver (Ansuel Smith).

      - Build the omap driver by default for ARCH_OMAP2PLUS (Anders
        Roxell).

      - Add r8a7742 SoC support to the dt cpufreq driver (Lad
        Prabhakar).

   - Update cpuidle core and drivers:

      - Fix three reference count leaks in error code paths in the
        cpuidle core (Qiushi Wu).

      - Convert Qualcomm SPM to a generic cpuidle driver (Stephan
        Gerhold).

      - Fix up the execution order when entering a domain idle state in
        the PSCI driver (Ulf Hansson).

   - Fix a reference counting issue related to clock management and
     clean up two oddities in the PM-runtime framework (Rafael Wysocki,
     Andy Shevchenko).

   - Add ElkhartLake support to the Intel RAPL power capping driver and
     remove an unused local MSR definition from it (Jacob Pan, Sumeet
     Pawnikar).

   - Update devfreq core and drivers:

      - Replace strncpy() with strscpy() in the devfreq core and use
        lockdep asserts instead of manual checks for a locked mutex in
        it (Dmitry Osipenko, Krzysztof Kozlowski).

      - Add a generic imx bus scaling driver and make it register an
        interconnect device (Leonard Crestez, Gustavo A. R. Silva).

      - Make the cpufreq notifier in the tegra30 driver take boosting
        into account and delete an unuseful error message from that
        driver (Dmitry Osipenko, Markus Elfring).

   - Remove unneeded semicolon from the cpupower code (Zou Wei)"

* tag 'pm-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (51 commits)
  cpuidle: Fix three reference count leaks
  PM: runtime: Replace pm_runtime_callbacks_present()
  PM / devfreq: Use lockdep asserts instead of manual checks for locked mutex
  PM / devfreq: imx-bus: Fix inconsistent IS_ERR and PTR_ERR
  PM / devfreq: Replace strncpy with strscpy
  PM / devfreq: imx: Register interconnect device
  PM / devfreq: Add generic imx bus scaling driver
  PM / devfreq: tegra30: Delete an error message in tegra_devfreq_probe()
  PM / devfreq: tegra30: Make CPUFreq notifier to take into account boosting
  PM: hibernate: Restrict writes to the resume device
  PM: runtime: clk: Fix clk_pm_runtime_get() error path
  cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver
  ACPI: EC: PM: s2idle: Extend GPE dispatching debug message
  ACPI: PM: s2idle: Print type of wakeup debug messages
  powercap: RAPL: remove unused local MSR define
  PM: runtime: Make clear what we do when conditions are wrong in rpm_suspend()
  Documentation: admin-guide: pm: Document intel-speed-select
  PM: hibernate: Split off snapshot dev option
  PM: hibernate: Incorporate concurrency handling
  Documentation: ABI: make current_governer_ro as a candidate for removal
  ...
2020-06-02 13:17:23 -07:00
Linus Torvalds
a5a82e0a59 platform-drivers-x86 for v5.8-1
* Add a support of  the media keys on the ASUS laptop UX325JA/UX425JA
 * ASUS WMI driver can now handle 2-in-1 models T100TA, T100CHI, T100HA, T200TA
 * Big refactoring of Intel SCU driver with Elkhart Lake support has been added
 * Slim Bootloarder firmware update signaling WMI driver has been added
 * Thinkpad ACPI driver can handle dual fan configuration on new P and X models
 * Touchscreen DMI driver has been extended to support
   - MP-man MPWIN895CL tablet
   - ONDA V891 v5 tablet
   - techBite Arc 11.6
   - Trekstor Twin 10.1
   - Trekstor Yourbook C11B
   - Vinga J116
 * Virtual Button driver got a few fixes to detect mode of 2-in-1 tablet models
 * Intel Speed Select tools update
 * Plenty of small cleanups here and there
 
 The following is an automated git shortlog grouped by driver:
 
 acerhdf:
  -  replace space by * in modalias
 
 New drivers:
  - Add Elkhart Lake SCU/PMC support
  - Add Slim Bootloader firmware update signaling driver
 
 asus-laptop:
  -  Drop duplicate check for led_classdev_unregister()
 
 asus-nb-wmi:
  -  Revert "Do not load on Asus T100TA and T200TA"
  -  Do not load on Asus T100TA and T200TA
 
 asus-wmi:
  -  Ignore WMI events with code 0x79
  -  Add support for SW_TABLET_MODE
  -  Move asus_wmi_input_init and _exit lower in the file
  -  Drop duplicate check for led_classdev_unregister()
  -  Reserve more space for struct bias_args
  -  remove redundant initialization of variable status
 
 dcdbas:
  -  Check SMBIOS for protected buffer address
 
 dell-laptop:
  -  don't register micmute LED if there is no token
 
 dell-wmi:
  -  Ignore keyboard attached / detached events
 
 device property:
  -  export set_secondary_fwnode() to modules
 
 eeepc-laptop:
  -  Drop duplicate check for led_classdev_unregister()
 
 hp-wmi:
  -  Introduce HPWMI_POWER_FW_OR_HW as convenient shortcut
  -  Convert simple_strtoul() to kstrtou32()
  -  Refactor postcode_store() to follow standard patterns
 
 intel_cht_int33fe:
  -  Fix spelling issues
  -  Switch to use acpi_dev_hid_uid_match()
  -  Convert to use set_secondary_fwnode()
  -  Convert software node array to group
 
 intel-hid:
  -  Add a quirk to support HP Spectre X2 (2015)
 
 intel_mid_powerbtn:
  -  Convert to use new SCU IPC API
 
 intel_pmc_core:
  -  avoid unused-function warnings
  -  Change Jasper Lake S0ix debug reg map back to ICL
 
 intel_pmc_ipc:
  -  Convert to MFD
  -  Move PCI IDs to intel_scu_pcidrv.c
  -  Drop intel_pmc_ipc_command()
  -  Start using SCU IPC
 
 intel_scu_ipc:
  -  Add managed function to register SCU IPC
  -  Introduce new SCU IPC API
  -  Move legacy SCU IPC API to a separate header
  -  Log more information if SCU IPC command fails
  -  Split out SCU IPC functionality from the SCU driver
 
 intel_scu_ipcutil:
  -  Convert to use new SCU IPC API
 
 intel-speed-select:
  -  Fix speed-select-base-freq-properties output on CLX-N
 
 intel_telemetry:
  -  Add telemetry_get_pltdata()
  -  Convert to use new SCU IPC API
 
 intel-vbtn:
  -  Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
  -  Detect switch position before registering the input-device
  -  Move detect_tablet_mode() to higher in the file
  -  Fix probe failure on devices with only switches
  -  Also handle tablet-mode switch on "Detachable" and "Portable" chassis-types
  -  Do not advertise switches to userspace if they are not there
  -  Split keymap into buttons and switches parts
  -  Use acpi_evaluate_integer()
 
 ISST:
  -  Increase timeout
 
 lg-laptop:
  -  Drop duplicate check for led_classdev_unregister()
 
 MAINTAINERS:
  -  Add me as maintainer of Intel SCU drivers
  -  Update entry for Intel Broxton PMC driver
 
 Merges of immutable branches:
  - Merge branch 'for-next'
  - Merge branch 'ib-mfd-x86-usb-watchdog-v5.7'
  - Merge branch 'ib-pdx86-properties'
 
 mfd:
  -  intel_soc_pmic_mrfld: Convert to use new SCU IPC API
  -  intel_soc_pmic_bxtwc: Convert to use new SCU IPC API
  -  intel_soc_pmic: Add SCU IPC member to struct intel_soc_pmic
 
 samsung-laptop:
  -  Drop duplicate check for led_classdev_unregister()
 
 software node:
  -  Allow register and unregister software node groups
 
 sony-laptop:
  -  Make resuming thermal profile safer
  -  SNC calls should handle BUFFER types
 
 thinkpad_acpi:
  -  Replace custom approach by kstrtoint()
  -  Use strndup_user() in dispatch_proc_write()
  -  Replace next_cmd(&buf) with strsep(&buf, ",")
  -  Drop duplicate check for led_classdev_unregister()
  -  Remove always false 'value < 0' statement
  -  Add support for dual fan control
 
 tools/power/x86/intel-speed-select:
  -  Fix invalid core mask
  -  Increase CPU count
  -  Fix json perf-profile output output
  -  Update version
  -  Enable clos for turbo-freq enable
  -  Fix CLX-N package information output
  -  Check support status before enable
  -  Change debug to error
 
 toshiba_acpi:
  -  Drop duplicate check for led_classdev_unregister()
 
 touchscreen_dmi:
  -  Update Trekstor Twin 10.1 entry
  -  Add info for the Trekstor Yourbook C11B
  -  Drop comma in terminator line
  -  add Vinga J116 touchscreen
  -  Add info for the ONDA V891 v5 tablet
  -  Add touchscreen info for techBite Arc 11.6.
  -  Add info for the MP-man MPWIN895CL tablet
 
 usb:
  -  typec: mux: Convert the Intel PMC Mux driver to use new SCU IPC API
 
 watchdog:
  -  iTCO: fix link error
  -  intel-mid_wdt: Convert to use new SCU IPC API
 
 wmi:
  -  Describe function parameters
  -  Fix indentation in some cases
  -  Replace UUID redefinitions by their originals
 
 x86/platform/intel-mid:
  -  Add empty stubs for intel_scu_devices_[create|destroy]()
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEqaflIX74DDDzMJJtb7wzTHR8rCgFAl7WCcoACgkQb7wzTHR8
 rCi+Pg//dDpMXTxCcXivHZPJHwuAxbwPeJRV9uDKKBSnKqfxyYu37oQf8AQiLTsL
 PZOAIiwlrXw0Jd+EH79zN2DyCujBg16B6mf4dx3fMK95OWhPoslofyKRwl8kOBP5
 QRZVpuwo6ayKwXV3cyFwWjXyWYJFL7+J3x+jjBmufBsoDJTn9edOCUa3oeHG0BYB
 4A91pVKwtfNqqdL/pwd+A9mEZrFJnVilyPRoxTipbpPJqvWQi9dYgb3wHKt/1NM3
 xPNd1GQHCI0Of4NGChszY0XdN4SyxFuyLmn1mogYq82r084QA4pLROb0+VFD2npd
 DQ4jxJqOwQDtC3gm789OeN6bZ0qnkO9HBwEmzVH7rwiajZxGW7U5rCgNYBahlTgr
 gY4kXIBXyOCO2/bItmrSvWDNBvVxD/THCfL4Q/cn6bNTy4TLTHAl2psQcsXIBT6/
 Z5SdmHMhxc80eDAOTtSJj0ODeDGvAgbV20n+X260FFAsefDBuXkYMHEaRBf9n2LJ
 8k9tauXZ6JdIc4K8/K+BaVl761Okl6PJPMTL7JsFqueHpyzZS7WclCYH5QQ1iN56
 10QzddSGp+4HfFFCG2cVkjXG2AnUgT3kQgEOHyLIxp6yKY1PghFXHTEmrLuheYum
 jK93qSva5tvvZzy9UejXXsIkDyg76zaIla3rmEEYAmgzPDawR9I=
 =pprB
 -----END PGP SIGNATURE-----

Merge tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - Add a support of the media keys on the ASUS laptop UX325JA/UX425JA

 - ASUS WMI driver can now handle 2-in-1 models T100TA, T100CHI, T100HA,
   T200TA

 - Big refactoring of Intel SCU driver with Elkhart Lake support has
   been added

 - Slim Bootloarder firmware update signaling WMI driver has been added

 - Thinkpad ACPI driver can handle dual fan configuration on new P and X
   models

 - Touchscreen DMI driver has been extended to support
    - MP-man MPWIN895CL tablet
    - ONDA V891 v5 tablet
    - techBite Arc 11.6
    - Trekstor Twin 10.1
    - Trekstor Yourbook C11B
    - Vinga J116

 - Virtual Button driver got a few fixes to detect mode of 2-in-1 tablet
   models

 - Intel Speed Select tools update

 - Plenty of small cleanups here and there

* tag 'platform-drivers-x86-v5.8-1' of git://git.infradead.org/linux-platform-drivers-x86: (89 commits)
  platform/x86: dcdbas: Check SMBIOS for protected buffer address
  platform/x86: asus_wmi: Reserve more space for struct bias_args
  platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
  platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
  platform/x86: touchscreen_dmi: Update Trekstor Twin 10.1 entry
  platform/x86: touchscreen_dmi: Add info for the Trekstor Yourbook C11B
  platform/x86: hp-wmi: Introduce HPWMI_POWER_FW_OR_HW as convenient shortcut
  platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
  platform/x86: hp-wmi: Refactor postcode_store() to follow standard patterns
  platform/x86: acerhdf: replace space by * in modalias
  platform/x86: ISST: Increase timeout
  tools/power/x86/intel-speed-select: Fix invalid core mask
  tools/power/x86/intel-speed-select: Increase CPU count
  tools/power/x86/intel-speed-select: Fix json perf-profile output output
  platform/x86: dell-wmi: Ignore keyboard attached / detached events
  platform/x86: dell-laptop: don't register micmute LED if there is no token
  platform/x86: thinkpad_acpi: Replace custom approach by kstrtoint()
  platform/x86: thinkpad_acpi: Use strndup_user() in dispatch_proc_write()
  platform/x86: thinkpad_acpi: Replace next_cmd(&buf) with strsep(&buf, ",")
  platform/x86: intel-vbtn: Detect switch position before registering the input-device
  ...
2020-06-02 12:56:58 -07:00
Linus Torvalds
c5d6c13843 MMC core:
- Enable erase/discard/trim support for all (e)MMC/SD hosts
  - Export information through sysfs about enhanced RPMB support (eMMC v5.1+)
  - Align the initialization commands for SDIO cards
  - Fix SDIO initialization to prevent memory leaks and NULL pointer errors
  - Do not export undefined MMC_NAME/MODALIAS for SDIO cards
  - Export device/vendor field from common CIS for SDIO cards
  - Move SDIO IDs from functional drivers to the common SDIO header
  - Introduce the ->request_atomic() host ops
 
 MMC host:
  - Improve support for HW busy signaling for several hosts
  - Converting some DT bindings to the json-schema
  - meson-mx-sdhc: Add driver and DT doc for the Amlogic Meson SDHC controller
  - meson-mx-sdio: Run a soft reset to recover from timeout/CRC error
  - mmci: Convert to use mmc_regulator_set_vqmmc()
  - mmci_stm32_sdmmc: Fix a couple of DMA bugs
  - mmci_stm32_sdmmc: Fix power on issue
  - renesas,mmcif,sdhci: Document r8a7742 DT bindings
  - renesas_sdhi: Add support for M3-W ES1.2 and 1.3 revisions
  - renesas_sdhi: Improvements to the TAP selection
  - renesas_sdhi/tmio: Further fixup runtime PM management at ->remove()
  - sdhci: Introduce ops to dump vendor specific registers
  - sdhci-cadence: Fix PHY write sequence
  - sdhci-esdhc-imx: Improve tunings
  - sdhci-esdhc-imx: Enable GPIO card detect as system wakeup
  - sdhci-esdhc-imx: Add HS400 support for i.MX6SLL
  - sdhci-esdhc-mcf: Add driver for the Coldfire/M5441X esdhc controller
    - m68k: mcf5441x: Add platform data to enable esdhc mmc controller
  - sdhci-msm: Improve HS400 tuning
  - sdhci-msm: Dump vendor specific registers at error
  - sdhci-msm: Add support for DLL/DDR properties provided from DT
  - sdhci-msm: Add support for the sm8250 variant
  - sdhci-msm: Add support for DVFS by converting to dev_pm_opp_set_rate()
  - sdhci-of-arasan: Add support for Intel Keem Bay variant
  - sdhci-of-arasan: Add support for Xilinx Versal SD variant
  - sdhci-of-dwcmshc: Add support for system suspend/resume
  - sdhci-of-dwcmshc: Fix UHS signaling support
  - sdhci-of-esdhc: Fix tuning for eMMC HS400 mode
  - sdhci-pci-gli: Add Genesys Logic GL9763E support
  - sdhci-sprd: Add support for the ->request_atomic() ops
  - sdhci-tegra: Avoid reading autocal timeout values when not applicable
 
 MEMSTICK:
  - Minor trivial update.
 -----BEGIN PGP SIGNATURE-----
 
 iQJLBAABCgA1FiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAl7UuIIXHHVsZi5oYW5z
 c29uQGxpbmFyby5vcmcACgkQ/iaEJXNYjCnzog/9GLeCHnaXan3uKU0NwWBpbiP0
 RIqty/wYJpnWwL1J+otWLjVamuy/DSF4Bv4Fz+L+lXTzXWK+htXpWUragsvOeCj5
 KHxSl/rASVo/zg5FOCCcq1+rYfRitAFqkWTYv0uFX+G/jcAcrspVJET3SfVYpVI4
 fT2VP3zWXEh4yxJUCwnzqVPR3rsTdRob9csvpz2tuBRBUt0Vg+Kfc+NLi2EZzdsJ
 GDmiYOlch4Lx+8tUtRQQUX4MTVYMWCCkfL0RhYH8+kgcD8xK/LorN0Xb6FPTln95
 hVPFTP3siojnj41UWQETqVnps7nsD+1ekLqehvNq6oLy7X4JDhWxu6bk3w7Gb2ox
 fk/L5x1ZFP+NFN8bvb3KPESfCKf4miuQ3fgRNad+FES7oqjN8ec55gB3oC2q5K8/
 RrBFrtrcFTWBqxeYPxBMdBdj1tS7yfNPOavQg9iVGjzqJfnoMXfsKHrrTeZmGdZZ
 4HudtV4BzSNUCmkvqho6TvFbLslfJ2a1RkV3tXijgbFknDoqD5rclm7KPp/ZQhH6
 5ExnQpqd2EsHykJE2Zu4UxWW5f8TUBT2iBhVmTyQzrzijCtdmUkpbViaJXU0/yLD
 /k+MbiiJQ4ZTpcOFMeZ73J2WFU4xLyjY4magtWtBlPUZiONQy68zQ2GVdQ0AlXEt
 kbWvC7mMAYXiMJyAF9c=
 =1bkc
 -----END PGP SIGNATURE-----

Merge tag 'mmc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Enable erase/discard/trim support for all (e)MMC/SD hosts
   - Export information through sysfs about enhanced RPMB support (eMMC v5.1+)
   - Align the initialization commands for SDIO cards
   - Fix SDIO initialization to prevent memory leaks and NULL pointer errors
   - Do not export undefined MMC_NAME/MODALIAS for SDIO cards
   - Export device/vendor field from common CIS for SDIO cards
   - Move SDIO IDs from functional drivers to the common SDIO header
   - Introduce the ->request_atomic() host ops

  MMC host:
   - Improve support for HW busy signaling for several hosts
   - Converting some DT bindings to the json-schema
   - meson-mx-sdhc: Add driver and DT doc for the Amlogic Meson SDHC controller
   - meson-mx-sdio: Run a soft reset to recover from timeout/CRC error
   - mmci: Convert to use mmc_regulator_set_vqmmc()
   - mmci_stm32_sdmmc: Fix a couple of DMA bugs
   - mmci_stm32_sdmmc: Fix power on issue
   - renesas,mmcif,sdhci: Document r8a7742 DT bindings
   - renesas_sdhi: Add support for M3-W ES1.2 and 1.3 revisions
   - renesas_sdhi: Improvements to the TAP selection
   - renesas_sdhi/tmio: Further fixup runtime PM management at ->remove()
   - sdhci: Introduce ops to dump vendor specific registers
   - sdhci-cadence: Fix PHY write sequence
   - sdhci-esdhc-imx: Improve tunings
   - sdhci-esdhc-imx: Enable GPIO card detect as system wakeup
   - sdhci-esdhc-imx: Add HS400 support for i.MX6SLL
   - sdhci-esdhc-mcf: Add driver for the Coldfire/M5441X esdhc controller
   - m68k: mcf5441x: Add platform data to enable esdhc mmc controller
   - sdhci-msm: Improve HS400 tuning
   - sdhci-msm: Dump vendor specific registers at error
   - sdhci-msm: Add support for DLL/DDR properties provided from DT
   - sdhci-msm: Add support for the sm8250 variant
   - sdhci-msm: Add support for DVFS by converting to dev_pm_opp_set_rate()
   - sdhci-of-arasan: Add support for Intel Keem Bay variant
   - sdhci-of-arasan: Add support for Xilinx Versal SD variant
   - sdhci-of-dwcmshc: Add support for system suspend/resume
   - sdhci-of-dwcmshc: Fix UHS signaling support
   - sdhci-of-esdhc: Fix tuning for eMMC HS400 mode
   - sdhci-pci-gli: Add Genesys Logic GL9763E support
   - sdhci-sprd: Add support for the ->request_atomic() ops
   - sdhci-tegra: Avoid reading autocal timeout values when not applicable

  MEMSTICK:
   - Minor trivial update"

* tag 'mmc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (127 commits)
  dt-bindings: mmc: Convert sdhci-pxa to json-schema
  mmc: sdhci-msm: Clear tuning done flag while hs400 tuning
  mmc: core: Export device/vendor ids from Common CIS for SDIO cards
  mmc: core: Do not export MMC_NAME= and MODALIAS=mmc:block for SDIO cards
  mmc: sdhci-of-at91: fix CALCR register being rewritten
  mmc: sdhci-esdhc-imx: disable the CMD CRC check for standard tuning
  mmc: sdhci-esdhc-imx: fix the mask for tuning start point
  mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin
  mmc: mmci_sdmmc: fix DMA API warning max segment size
  mmc: mmci_sdmmc: fix DMA API warning overlapping mappings
  mmc: sdhci-of-arasan: Add support for Intel Keem Bay
  dt-bindings: mmc: arasan: Add compatible strings for Intel Keem Bay
  mmc: sdhci-cadence: fix PHY write
  mmc: sdio: Sort all SDIO IDs in common include file
  mmc: sdio: Fix Cypress SDIO IDs macros in common include file
  mmc: sdio: Move SDIO IDs from b43-sdio driver to common include file
  mmc: sdio: Move SDIO IDs from ath10k driver to common include file
  mmc: sdio: Move SDIO IDs from ath6kl driver to common include file
  mmc: sdio: Move SDIO IDs from smssdio driver to common include file
  mmc: sdio: Move SDIO IDs from btmtksdio driver to common include file
  ...
2020-06-02 12:48:58 -07:00
Linus Torvalds
94709049fb Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
 "A few little subsystems and a start of a lot of MM patches.

  Subsystems affected by this patch series: squashfs, ocfs2, parisc,
  vfs. With mm subsystems: slab-generic, slub, debug, pagecache, gup,
  swap, memcg, pagemap, memory-failure, vmalloc, kasan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
  kasan: move kasan_report() into report.c
  mm/mm_init.c: report kasan-tag information stored in page->flags
  ubsan: entirely disable alignment checks under UBSAN_TRAP
  kasan: fix clang compilation warning due to stack protector
  x86/mm: remove vmalloc faulting
  mm: remove vmalloc_sync_(un)mappings()
  x86/mm/32: implement arch_sync_kernel_mappings()
  x86/mm/64: implement arch_sync_kernel_mappings()
  mm/ioremap: track which page-table levels were modified
  mm/vmalloc: track which page-table levels were modified
  mm: add functions to track page directory modifications
  s390: use __vmalloc_node in stack_alloc
  powerpc: use __vmalloc_node in alloc_vm_stack
  arm64: use __vmalloc_node in arch_alloc_vmap_stack
  mm: remove vmalloc_user_node_flags
  mm: switch the test_vmalloc module to use __vmalloc_node
  mm: remove __vmalloc_node_flags_caller
  mm: remove both instances of __vmalloc_node_flags
  mm: remove the prot argument to __vmalloc_node
  mm: remove the pgprot argument to __vmalloc
  ...
2020-06-02 12:21:36 -07:00
Andrey Konovalov
4fba37586e kasan: move kasan_report() into report.c
The kasan_report() functions belongs to report.c, as it's a common
functions that does error reporting.

Reported-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Leon Romanovsky <leon@kernel.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Link: http://lkml.kernel.org/r/78a81fde6eeda9db72a7fd55fbc33173a515e4b1.1589297433.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Jing Xia
86fea8b494 mm/mm_init.c: report kasan-tag information stored in page->flags
The pageflags_layout_usage shows incorrect message by means of
mminit_loglevel when Kasan runs in the mode of software tag-based
enabled with CONFIG_KASAN_SW_TAGS.  This patch corrects it and reports
kasan-tag information.

Signed-off-by: Jing Xia <jing.xia@unisoc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Chunyan Zhang <chunyan.zhang@unisoc.com>
Cc: Orson Zhai <orson.zhai@unisoc.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Link: http://lkml.kernel.org/r/1586929370-10838-1-git-send-email-jing.xia.mail@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Kees Cook
9380ce246a ubsan: entirely disable alignment checks under UBSAN_TRAP
Commit 8d58f222e8 ("ubsan: disable UBSAN_ALIGNMENT under
COMPILE_TEST") tried to fix the pathological results of UBSAN_ALIGNMENT
with UBSAN_TRAP (which objtool would rightly scream about), but it made
an assumption about how COMPILE_TEST gets set (it is not set for
randconfig).  As a result, we need a bigger hammer here: just don't
allow the alignment checks with the trap mode.

Fixes: 8d58f222e8 ("ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Elena Petrova <lenaptr@google.com>
Link: http://lkml.kernel.org/r/202005291236.000FCB6@keescook
Link: https://lore.kernel.org/lkml/742521db-1e8c-0d7a-1ed4-a908894fb497@infradead.org/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Andrey Konovalov
ca734cc67e kasan: fix clang compilation warning due to stack protector
KASAN uses a single cc-option invocation to disable both conserve-stack
and stack-protector flags.  The former flag is not present in Clang,
which causes cc-option to fail, and results in stack-protector being
enabled.

Fix by using separate cc-option calls for each flag.  Also collect all
flags in a variable to avoid calling cc-option multiple times for
different files.

Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Marco Elver <elver@google.com>
Link: http://lkml.kernel.org/r/c2f0c8e4048852ae014f4a391d96ca42d27e3255.1590779332.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Joerg Roedel
7f0a002b5a x86/mm: remove vmalloc faulting
Remove fault handling on vmalloc areas, as the vmalloc code now takes
care of synchronizing changes to all page-tables in the system.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-8-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Joerg Roedel
73f693c3a7 mm: remove vmalloc_sync_(un)mappings()
These functions are not needed anymore because the vmalloc and ioremap
mappings are now synchronized when they are created or torn down.

Remove all callers and function definitions.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-7-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:12 -07:00
Joerg Roedel
86cf69f1d8 x86/mm/32: implement arch_sync_kernel_mappings()
Implement the function to sync changes in vmalloc and ioremap ranges to
all page-tables.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-6-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Joerg Roedel
8e19843c36 x86/mm/64: implement arch_sync_kernel_mappings()
Implement the function to sync changes in vmalloc and ioremap ranges to
all page-tables.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-5-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Joerg Roedel
6c0c7d2b36 mm/ioremap: track which page-table levels were modified
Track at which levels in the page-table entries were modified by
ioremap_page_range().

After the page-table has been modified, use that information do decide
whether the new arch_sync_kernel_mappings() needs to be called.  The
iounmap path re-uses vunmap(), which has already been taken care of.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-4-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Joerg Roedel
2ba3e6947a mm/vmalloc: track which page-table levels were modified
Track at which levels in the page-table entries were modified by
vmap/vunmap.

After the page-table has been modified, use that information do decide
whether the new arch_sync_kernel_mappings() needs to be called.

[akpm@linux-foundation.org: map_kernel_range_noflush() needs the arch_sync_kernel_mappings() call]
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Link: http://lkml.kernel.org/r/20200515140023.25469-3-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Joerg Roedel
d862613800 mm: add functions to track page directory modifications
Patch series "mm: Get rid of vmalloc_sync_(un)mappings()", v3.

After the recent issue with vmalloc and tracing code[1] on x86 and a
long history of previous issues related to the vmalloc_sync_mappings()
interface, I thought the time has come to remove it.  Please see [2],
[3], and [4] for some other issues in the past.

The patches add tracking of page-table directory changes to the vmalloc
and ioremap code.  Depending on which page-table levels changes have
been made, a new per-arch function is called:
arch_sync_kernel_mappings().

On x86-64 with 4-level paging, this function will not be called more
than 64 times in a systems runtime (because vmalloc-space takes 64 PGD
entries which are only populated, but never cleared).

As a side effect this also allows to get rid of vmalloc faults on x86,
making it safe to touch vmalloc'ed memory in the page-fault handler.
Note that this potentially includes per-cpu memory.

This patch (of 7):

Add page-table allocation functions which will keep track of changed
directory entries.  They are needed for new PGD, P4D, PUD, and PMD
entries and will be used in vmalloc and ioremap code to decide whether
any changes in the kernel mappings need to be synchronized between
page-tables in the system.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20200515140023.25469-1-joro@8bytes.org
Link: http://lkml.kernel.org/r/20200515140023.25469-2-joro@8bytes.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Christoph Hellwig
b200f5b58c s390: use __vmalloc_node in stack_alloc
stack_alloc can use a slightly higher level vmalloc function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-30-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Christoph Hellwig
cb0849a990 powerpc: use __vmalloc_node in alloc_vm_stack
alloc_vm_stack can use a slightly higher level vmalloc function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-29-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00
Christoph Hellwig
ebcdd3074a arm64: use __vmalloc_node in arch_alloc_vmap_stack
arch_alloc_vmap_stack can use a slightly higher level vmalloc function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Gao Xiang <xiang@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-28-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00