Most of the changes this time are for incorrect device nodes in various
ways, on on imx, berlin, exynos, ux500, uniphier, omap and meson.
Chen-Yu Tsai now co-maintains mach-sunxi (Allwinner).
Other bug fixes include
* a partial revert of a broken tegra gpio patch
* irq affinity for arm ccn
* suspend on one Armada 385 machine
* enable ZONE_DMA to avoid an OMAP crash for over 2GB RAM
* turning on a regulator on beagleboard-x15 for HDMI
* making the omap gpmc debug code visible
* setup of orion network switch
* a rare build regression for pxa
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Most of the changes this time are for incorrect device nodes in
various ways, on on imx, berlin, exynos, ux500, uniphier, omap and
meson.
Chen-Yu Tsai now co-maintains mach-sunxi (Allwinner).
Other bug fixes include
- a partial revert of a broken tegra gpio patch
- irq affinity for arm ccn
- suspend on one Armada 385 machine
- enable ZONE_DMA to avoid an OMAP crash for over 2GB RAM
- turning on a regulator on beagleboard-x15 for HDMI
- making the omap gpmc debug code visible
- setup of orion network switch
- a rare build regression for pxa"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (22 commits)
ARM: OMAP2+: Fix imprecise external abort caused by bogus SRAM init
thermal: exynos: Fix register read in TMU
ARM: OMAP2+: Fix oops with LPAE and more than 2GB of memory
ARM: tegra: Comment out gpio-ranges properties
ARM: dts: uniphier: fix IRQ number for devices on PH1-LD6b ref board
drivers/perf: arm_pmu: avoid CPU device_node reference leak
bus: arm-ccn: Fix irq affinity setting on CPU migration
bus: arm-ccn: Handle correctly no-more-cpus case
ARM: mvebu: correct a385-db-ap compatible string
ARM: meson6: DTS: Fix wrong reg mapping and IRQ numbers
MAINTAINERS: Update Allwinner entry and add new maintainer
ARM: ux500: modify initial levelshifter status
ARM: pxa: fix pxa3xx DFI lockup hack
Documentation: ARM: List new omap MMC requirements
memory: omap-gpmc: dump "before" state before first modification
memory: omap-gpmc: Fix unselectable debug option for GPMC
ARM: dts: am57xx-beagle-x15: set VDD_SD to always-on
ARM: dts: Fix audio card detection on Peach boards
ARM: EXYNOS: Fix double of_node_put() when parsing child power domains
ARM: orion: Fix DSA platform device after mvmdio conversion
...
The keyboard driver for GPIO buttons(gpio-keys) checks for one of the
two boolean properties to enable gpio buttons as wakeup source:
1. "wakeup-source" or
2. the legacy "gpio-key,wakeup"
However juno, ste-snowball and emev2-kzm9d dts file have a undetected
"wakeup" property to indictate the wakeup source.
This patch fixes it by making use of "wakeup-source" property.
Cc: Magnus Damm <magnus.damm@gmail.com>
Acked-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Remove the inclusion of linux/mdio-gpio.h in nas4220b, wbd111 and wbd222
boards since mdio-gpio is not used.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently we do not validate rtas.entry before calling enter_rtas(). This
leads to a kernel oops when user space calls rtas system call on a powernv
platform (see below). This patch adds code to validate rtas.entry before
making enter_rtas() call.
Oops: Exception in kernel mode, sig: 4 [#1]
SMP NR_CPUS=1024 NUMA PowerNV
task: c000000004294b80 ti: c0000007e1a78000 task.ti: c0000007e1a78000
NIP: 0000000000000000 LR: 0000000000009c14 CTR: c000000000423140
REGS: c0000007e1a7b920 TRAP: 0e40 Not tainted (3.18.17-340.el7_1.pkvm3_1_0.2400.1.ppc64le)
MSR: 1000000000081000 <HV,ME> CR: 00000000 XER: 00000000
CFAR: c000000000009c0c SOFTE: 0
NIP [0000000000000000] (null)
LR [0000000000009c14] 0x9c14
Call Trace:
[c0000007e1a7bba0] [c00000000041a7f4] avc_has_perm_noaudit+0x54/0x110 (unreliable)
[c0000007e1a7bd80] [c00000000002ddc0] ppc_rtas+0x150/0x2d0
[c0000007e1a7be30] [c000000000009358] syscall_exit+0x0/0x98
Cc: stable@vger.kernel.org # v3.2+
Fixes: 55190f8878 ("powerpc: Add skeleton PowerNV platform")
Reported-by: NAGESWARA R. SASTRY <nasastry@in.ibm.com>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
[mpe: Reword change log, trim oops, and add stable + fixes]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
- A bug where level-triggered interrupts lowered from userspace
are still routed to the guest
- A memory leak an a failed initialization path
- A build error under certain configurations
- Several timer bugs introduced with moving the timer to the active
state handling instead of the masking trick.
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Merge tag 'kvm-arm-for-v4.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
A late round of KVM/ARM fixes for v4.3-rc7, fixing:
- A bug where level-triggered interrupts lowered from userspace
are still routed to the guest
- A memory leak an a failed initialization path
- A build error under certain configurations
- Several timer bugs introduced with moving the timer to the active
state handling instead of the masking trick.
Fix wrong compatible for A385 DB AP preventing using suspend
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Merge tag 'mvebu-fixes-4.3-2' of git://git.infradead.org/linux-mvebu into fixes
Merge "mvebu fixes for 4.3 (part 2)" from Gregory CLEMENT:
Fix wrong compatible for A385 DB AP preventing using suspend
* tag 'mvebu-fixes-4.3-2' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: correct a385-db-ap compatible string
- Fix oops with LPAE and moew than 2GB of memory by enabling
ZONE_DMA for LPAE. Probably no need for stable on this one as we
only recently ran into this with the mainline kernel
- Fix imprecise external abort caused by bogus SRAM init. This affects
dm814x recently merged, so no need for stable on this one AFAIK
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Merge tag 'omap-for-v4.3/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "Fixes for omaps for v4.3-rc cycle" from Tony Lindgren:
- Fix oops with LPAE and moew than 2GB of memory by enabling
ZONE_DMA for LPAE. Probably no need for stable on this one as we
only recently ran into this with the mainline kernel
- Fix imprecise external abort caused by bogus SRAM init. This affects
dm814x recently merged, so no need for stable on this one AFAIK
* tag 'omap-for-v4.3/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Fix imprecise external abort caused by bogus SRAM init
ARM: OMAP2+: Fix oops with LPAE and more than 2GB of memory
This fixes a bug where it is possible for an off-line CPU to fail to go
into a low-power state (nap/sleep/winkle), and to become unresponsive to
requests from the KVM subsystem to wake up and run a VCPU. What can
happen is that a maskable interrupt of some kind (external, decrementer,
hypervisor doorbell, or HMI) after we have called local_irq_disable() at
the beginning of pnv_smp_cpu_kill_self() and before interrupts are
hard-disabled inside power7_nap/sleep/winkle(). In this situation, the
pending event is marked in the irq_happened flag in the PACA. This
pending event prevents power7_nap/sleep/winkle from going to the
requested low-power state; instead they return immediately. We don't
deal with any of these pending event flags in the off-line loop in
pnv_smp_cpu_kill_self() because power7_nap et al. return 0 in this case,
so we will have srr1 == 0, and none of the processing to clear
interrupts or doorbells will be done.
Usually, the most obvious symptom of this is that a KVM guest will fail
with a console message saying "KVM: couldn't grab cpu N".
This fixes the problem by making sure we handle the irq_happened flags
properly. First, we hard-disable before the off-line loop. Once we have
hard-disabled, the irq_happened flags can't change underneath us. We
unconditionally clear the DEC and HMI flags: there is no processing of
timer interrupts while off-line, and the necessary HMI processing is all
done in lower-level code. We leave the EE and DBELL flags alone for the
first iteration of the loop, so that we won't fail to respond to a
split-core request that came in just before hard-disabling. Within the
loop, we handle external interrupts if the EE bit is set in irq_happened
as well as if the low-power state was interrupted by an external
interrupt. (We don't need to do the msgclr for a pending doorbell in
irq_happened, because doorbells are edge-triggered and don't remain
pending in hardware.) Then we clear both the EE and DBELL flags, and
once clear, they cannot be set again (until this CPU comes online again,
that is).
This also fixes the debug check to not be done when we just ran a KVM
guest or when the sleep didn't happen because of a pending event in
irq_happened.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This reverts commit 9678cdaae9 ("Use the POWER8 Micro Partition
Prefetch Engine in KVM HV on POWER8") because the original commit had
multiple, partly self-cancelling bugs, that could cause occasional
memory corruption.
In fact the logmpp instruction was incorrectly using register r0 as the
source of the buffer address and operation code, and depending on what
was in r0, it would either do nothing or corrupt the 64k page pointed to
by r0.
The logmpp instruction encoding and the operation code definitions could
be corrected, but then there is the problem that there is no clearly
defined way to know when the hardware has finished writing to the
buffer.
The original commit attempted to work around this by aborting the
write-out before starting the prefetch, but this is ineffective in the
case where the virtual core is now executing on a different physical
core from the one where the write-out was initiated.
These problems plus advice from the hardware designers not to use the
function (since the measured performance improvement from using the
feature was actually mostly negative), mean that reverting the code is
the best option.
Fixes: 9678cdaae9 ("Use the POWER8 Micro Partition Prefetch Engine in KVM HV on POWER8")
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
... and save us the stub.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We have the MAINTAINERS file for that. Also, Andreas doesn't
have the time for this work anymore.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Remove the remaining module functionality leftovers. Make
"dis_ucode_ldr" an early_param and make it static again. Drop
module aliases, autoloading table, description, etc.
Bump version number, while at it.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Merge the early loader functionality into the driver proper. The
diff is huge but logically, it is simply moving code from the
_early.c files into the main driver.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Make CONFIG_MICROCODE a bool. It was practically a bool already anyway,
since early loader was forcing it to =y.
Regardless, there's no real reason to have something be a module which
gets built-in on the majority of installations out there. And its not
like there's noticeable change in functionality - we still can load late
microcode - just the module glue disappears.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Standardize on bool instead of an inconsistent mixture of u8 and plain 'int'.
Also use u32 or 'unsigned int' instead of 'unsigned long' when a 32-bit type
suffices, generating slightly better code on x86-64.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/5624E3A002000078000AC49A@prv-mh.provo.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Move the generic help text explaining each CPU type and what to
select under the "Processor Family" prompt and not under the
M486 option. Also, amend it with the missing options.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1445244077-25120-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The per CPU thermal vector init code checks if the thermal
vector is already installed and complains and bails out if it
is.
This happens after kexec, as kernel shut down does not clear the
thermal vector APIC register.
This causes two problems:
1. So we always do not fully initialize thermal reports after
kexec. The CPU is still likely initialized, as the previous
kernel should have done it. But we don't set up the software
pointer to the thermal vector, so reporting may end up with a
unknown thermal interrupt message.
2. Also it complains for every logical CPU, even though the
value is actually derived from BP only.
The problem is that we end up with one message per CPU, so on
larger systems it becomes very noisy and messes up the otherwise
nicely formatted CPU bootup numbers in the kernel log.
Just remove the check. I checked the code and there's no valid
code paths where the thermal init code for a CPU could be called
multiple times.
Why the kernel does not clean up this value on shutdown:
The thermal monitoring is controlled per logical CPU thread.
Normal shutdown code is just running on one CPU. To disable it
we would need a broadcast NMI to all CPUs on shut down. That's
overkill for this. So we just ignore it after kexec.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1445246268-26285-9-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
memblock_reserve() can fail but the crashkernel reservation code
doesn't check that and this can lead the user into believing
that the crashkernel region was actually reserved. Make sure we
check that return value and we exit early with a failure message
in the error case.
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This function doesn't give us the "Node ID" as the function name
suggests. Rather, it receives a PCI device as argument, checks
the available F3 PCI device IDs in the system and returns the
index of the matching Bus/Device IDs.
Rename it to amd_pci_dev_to_node_id().
No functional change is introduced.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1445246268-26285-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
People reported that when allocating crashkernel memory using
the ",high" and ",low" syntax, there were cases where the
reservation of the high portion succeeds but the reservation of
the low portion fails.
Then kexec can load the kdump kernel successfully, but booting
the kdump kernel fails as there's no low memory.
The low memory allocation for the kdump kernel can fail on large
systems for a couple of reasons. For example, the manually
specified crashkernel low memory can be too large and thus no
adequate memblock region would be found.
Therefore, we try to reserve low memory for the crash kernel
*after* the high memory portion has been allocated. If that
fails, we free crashkernel high memory too and return. The user
can then take measures accordingly.
Tested-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Baoquan He <bhe@redhat.com>
[ Massage text. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Young <dyoung@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/1445246268-26285-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The vgic code on ARM is built for all configurations that enable KVM,
but the parent_data field that it references is only present when
CONFIG_IRQ_DOMAIN_HIERARCHY is set:
virt/kvm/arm/vgic.c: In function 'kvm_vgic_map_phys_irq':
virt/kvm/arm/vgic.c:1781:13: error: 'struct irq_data' has no member named 'parent_data'
This flag is implied by the GIC driver, and indeed the VGIC code only
makes sense if a GIC is present. This changes the CONFIG_KVM symbol
to always select GIC, which avoids the issue.
Fixes: 662d971584 ("arm/arm64: KVM: Kill CONFIG_KVM_ARM_{VGIC,TIMER}")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Jump to correct label and free kvm_host_cpu_state
Reviewed-by: Wei Huang <wei@redhat.com>
Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Conflicts:
drivers/net/usb/asix_common.c
net/ipv4/inet_connection_sock.c
net/switchdev/switchdev.c
In the inet_connection_sock.c case the request socket hashing scheme
is completely different in net-next.
The other two conflicts were overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
get_wchan() is racy by design, it may access volatile stack
of running task, thus it may access redzone in a stack frame
and cause KASAN to warn about this.
Use READ_ONCE_NOCHECK() to silence these warnings.
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>
Cc: kasan-dev <kasan-dev@googlegroups.com>
Link: http://lkml.kernel.org/r/1445243838-17763-3-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The patch catches PERF_SAMPLE_BRANCH_CALL because it is not clear whether
this is actually supported by the hardware.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: khandual@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1444720151-10275-4-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch enables the suport for the PERF_SAMPLE_BRANCH_CALL
for Intel x86 processors. When the processor support LBR filtering
this the selection is done in hardware. Otherwise, the filter is
applied by software. Note that we chose to include zero length calls
because they also represent calls.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: khandual@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1444720151-10275-3-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit:
b20112edea ("perf/x86: Improve accuracy of perf/sched clock")
allowed the time_shift value in perf_event_mmap_page to be as much
as 32. Unfortunately the documented algorithms for using time_shift
have it shifting an integer, whereas to work correctly with the value
32, the type must be u64.
In the case of perf tools, Intel PT decodes correctly but the timestamps
that are output (for example by perf script) have lost 32-bits of
granularity so they look like they are not changing at all.
Fix by limiting the shift to 31 and adjusting the multiplier accordingly.
Also update the documentation of perf_event_mmap_page so that new code
based on it will be more future-proof.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: b20112edea ("perf/x86: Improve accuracy of perf/sched clock")
Link: http://lkml.kernel.org/r/1445001845-13688-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Now that the core code supports acquire/release/relaxed versions of
the atomic_inc family, implement only the _relaxed flavours in the ARM
backend so that we get all of the others for free.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444227038-12533-1-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull UML fixes from Richard Weinberger:
"This contains four overdue UML regression fixes"
* 'for-linus-4.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: Fix kernel mode fault condition
um: Fix waitpid() usage in helper code
um: Do not rely on libc to provide modify_ldt()
um: Fix out-of-tree build
We have to exclude memory locations <= PAGE_SIZE from
the condition and let the kernel mode fault path catch it.
Otherwise a kernel NULL pointer exception will be reported
as a kernel user space access.
Fixes: d2313084e2 (um: Catch unprotected user memory access)
Signed-off-by: Richard Weinberger <richard@nod.at>
If UML is executing a helper program it is using
waitpid() with the __WCLONE flag to wait for the program
as the helper is executed from a clone()'ed thread.
While using __WCLONE is perfectly fine for clone()'ed
childs it won't detect terminated childs if the helper
has issued an execve().
We have to use __WALL to wait for both clone()'ed and
regular childs to detect the termination before and
after an execve().
Reported-and-tested-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
modify_ldt() was declared as an external symbol. Despite the man
page for this syscall telling that there is no wrapper in glibc,
since version 2.1 there actually is, so linking to the glibc
works.
Since modify_ldt() is not a POSIX interface, other libc
implementations do not always provide a wrapper function.
Even glibc headers do not provide a corresponding declaration.
So go the recommended way to call this using syscall().
Signed-off-by: Hans-Werner Hilse <hwhilse@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Commit 30b11ee9a (um: Remove copy&paste code from init.h)
uncovered an issue wrt. out-of-tree builds.
For out-of-tree builds, we must not rely on relative paths.
Before 30b11ee9a it worked by chance as no host code included
generated header files.
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Pull networking fixes from David Miller:
1) Account for extra headroom in ath9k driver, from Felix Fietkau.
2) Fix OOPS in pppoe driver due to incorrect socket state transition,
from Guillaume Nault.
3) Kill memory leak in amd-xgbe debugfx, from Geliang Tang.
4) Power management fixes for iwlwifi, from Johannes Berg.
5) Fix races in reqsk_queue_unlink(), from Eric Dumazet.
6) Fix dst_entry usage in ARP replies, from Jiri Benc.
7) Cure OOPSes with SO_GET_FILTER, from Daniel Borkmann.
8) Missing allocation failure check in amd-xgbe, from Tom Lendacky.
9) Various resource allocation/freeing cures in DSA< from Neil
Armstrong.
10) A series of bug fixes in the openvswitch conntrack support, from
Joe Stringer.
11) Fix two cases (BPF and act_mirred) where we have to clean the sender
cpu stored in the SKB before transmitting. From WANG Cong and
Alexei Starovoitov.
12) Disable VLAN filtering in promiscuous mode in mlx5 driver, from
Achiad Shochat.
13) Older bnx2x chips cannot do 4-tuple UDP hashing, so prevent this
configuration via ethtool. From Yuval Mintz.
14) Don't call rt6_uncached_list_flush_dev() from rt6_ifdown() when
'dev' is NULL, from Eric Biederman.
15) Prevent stalled link synchronization in tipc, from Jon Paul Maloy.
16) kcalloc() gstrings ethtool buffer before having driver fill it in,
in order to prevent kernel memory leaking. From Joe Perches.
17) Fix mixxing rt6_info initialization for blackhole routes, from
Martin KaFai Lau.
18) Kill VLAN regression in via-rhine, from Andrej Ota.
19) Missing pfmemalloc check in sk_add_backlog(), from Eric Dumazet.
20) Fix spurious MSG_TRUNC signalling in netlink dumps, from Ronen Arad.
21) Scrube SKBs when pushing them between namespaces in openvswitch,
from Joe Stringer.
22) bcmgenet enables link interrupts too early, fix from Florian
Fainelli.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (92 commits)
net: bcmgenet: Fix early link interrupt enabling
tunnels: Don't require remote endpoint or ID during creation.
openvswitch: Scrub skb between namespaces
xen-netback: correctly check failed allocation
net: asix: add support for the Billionton GUSB2AM-1G-B USB adapter
netlink: Trim skb to alloc size to avoid MSG_TRUNC
net: add pfmemalloc check in sk_add_backlog()
via-rhine: fix VLAN receive handling regression.
ipv6: Initialize rt6_info properly in ip6_blackhole_route()
ipv6: Move common init code for rt6_info to a new function rt6_info_init()
Bluetooth: Fix initializing conn_params in scan phase
Bluetooth: Fix conn_params list update in hci_connect_le_scan_cleanup
Bluetooth: Fix remove_device behavior for explicit connects
Bluetooth: Fix LE reconnection logic
Bluetooth: Fix reference counting for LE-scan based connections
Bluetooth: Fix double scan updates
mlxsw: core: Fix race condition in __mlxsw_emad_transmit
tipc: move fragment importance field to new header position
ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
tipc: eliminate risk of stalled link synchronization
...
Install a non-faulting handler just before unmasking imprecise aborts
and switch back to the regular one after unmasking is done.
This catches any pending imprecise abort that the firmware/bootloader
may have left behind that would normally crash the kernel at that point.
As there are apparently a lot of bootlaoders out there that do such a
thing it makes sense to handle it in the common startup code.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
If the host toolchain is not glibc based then the arm kernel build
fails with
HOSTCC arch/arm/vdso/vdsomunge
arch/arm/vdso/vdsomunge.c:48:22: fatal error: byteswap.h: No such file or directory
Observed: with omap2plus_defconfig and compile on Mac OS X with arm ELF
cross-compiler.
Reason: byteswap.h is a glibc only header.
Solution: replace by private byte-swapping macros (taken from
arch/mips/boot/elf2ecoff.c and kindly improved by Russell King)
Tested to compile on Mac OS X 10.9.5 host.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some omaps are producing imprecise external aborts because we are
wrongly trying to init SRAM for device tree based booting. Only
omap3 is still using the legacy SRAM code, so we need to make it
omap3 specific. Otherwise we can get errors like this on at least
dm814x:
Unhandled fault: imprecise external abort (0xc06) at 0xc08b156c
...
(omap_rev) from [<c08b12e0>] (omap_sram_init+0xf8/0x3e0)
(omap_sram_init) from [<c08aca0c>] (omap_sdrc_init+0x10/0xb0)
(omap_sdrc_init) from [<c08b581c>] (pdata_quirks_init+0x18/0x44)
(pdata_quirks_init) from [<c08b5478>] (omap_generic_init+0x10/0x1c)
(omap_generic_init) from [<c08a57e0>] (customize_machine+0x1c/0x40)
(customize_machine) from [<c00098a4>] (do_one_initcall+0x80/0x1dc)
(do_one_initcall) from [<c08a2ec4>] (kernel_init_freeable+0x218/0x2e8)
(kernel_init_freeable) from [<c063a554>] (kernel_init+0x8/0xec)
(kernel_init) from [<c000f890>] (ret_from_fork+0x14/0x24)
Let's fix the issue by making sure omap_sdrc_init only gets called for
omap3. To do that, we need to have compatible "ti,omap3" in the dts
files. And let's also use "ti,omap3630" instead of "ti,omap36xx" like
we're supposed to.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Declaration of memcpy() is hidden under #ifndef CONFIG_KMEMCHECK.
In asm/efi.h under #ifdef CONFIG_KASAN we #undef memcpy(), due to
which the following happens:
In file included from arch/x86/kernel/setup.c:96:0:
./arch/x86/include/asm/desc.h: In function ‘native_write_idt_entry’:
./arch/x86/include/asm/desc.h:122:2: error: implicit declaration of function ‘memcpy’ [-Werror=implicit-function-declaration] memcpy(&idt[entry], gate, sizeof(*gate));
^
cc1: some warnings being treated as errors
make[2]: *** [arch/x86/kernel/setup.o] Error 1
We will get rid of that #undef in asm/efi.h eventually.
But in the meanwhile move memcpy() declaration out of #ifdefs
to fix the build.
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444994933-28328-1-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The following commit:
a9bcaa02a5 ("x86/smpboot: Remove SIPI delays from cpu_up()")
Caused some Intel Core2 processors to time-out when bringing up CPU #1,
resulting in the missing of that CPU after bootup.
That patch reduced the SIPI delays from udelay() 300, 200 to udelay() 0,
0 on modern processors.
Several Intel(R) Core(TM)2 systems failed to bring up CPU #1 10/10 times
after that change.
Increasing either of the SIPI delays to udelay(1) results in
success. So here we increase both to udelay(10). While this may
be 20x slower than the absolute minimum, it is still 20x to 30x
faster than the original code.
Tested-by: Donald Parsons <dparsons@brightdsl.net>
Tested-by: Shane <shrybman@teksavvy.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dparsons@brightdsl.net
Cc: shrybman@teksavvy.com
Link: http://lkml.kernel.org/r/6dd554ee8945984d85aafb2ad35793174d068af0.1444968087.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
For legacy machines cpu_init_udelay defaults to 10,000.
For modern machines it is set to 0.
The user should be able to set cpu_init_udelay to
any value on the cmdline, including 10,000.
Before this patch, that was seen as "unchanged from default"
and thus on a modern machine, the user request was ignored
and the delay was set to 0.
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dparsons@brightdsl.net
Cc: shrybman@teksavvy.com
Link: http://lkml.kernel.org/r/de363cdbbcfcca1d22569683f7eb9873e0177251.1444968087.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We either need to restore them before popping and thus changing
ESP, or we need to adjust the offsets. The former is simpler.
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 5f310f739b x86/entry/32: ("Re-implement SYSENTER using the new C path")
Link: http://lkml.kernel.org/r/461e5c7d8fa3821529893a4893ac9c4bc37f9e17.1445035014.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When I rewrote entry_INT80_32, I thought that int80 was an
interrupt gate. It's a trap gate. *facepalm*
Thanks to Brian Gerst for pointing out that it's better to
change the entry code than to change the gate type.
Suggested-by: Brian Gerst <brgerst@gmail.com>
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 150ac78d63 ("x86/entry/32: Switch INT80 to the new C syscall path")
Link: http://lkml.kernel.org/r/dc09d9b574a5c1dcca996847875c73f8341ce0ad.1445035014.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
For non halt-on-reset case, all cores start of simultaneously in @stext.
Master core0 proceeds with kernel boot, while other spin-wait on
@wake_flag being set by master once it is ready. So NO hardware assist
is needed for master to "kick" the others.
This patch moves this soft implementation out of mcip.c (as there is no
hardware assist) into common smp.c
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This frees up some bits to hold more high level info such as PAE being
present, w/o increasing the size of already bloated cpuinfo struct
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This is done by improving the laddering logic !
Before:
if Exception
goto excep_or_pure_k_ret
if !Interrupt(L2)
goto l1_chk
else
INTERRUPT_EPILOGUE 2
l1_chk:
if !Interrupt(L1) (i.e. pure kernel mode)
goto excep_or_pure_k_ret
else
INTERRUPT_EPILOGUE 1
excep_or_pure_k_ret:
EXCEPTION_EPILOGUE
Now:
if !Interrupt(L1 or L2) (i.e. exception or pure kernel mode)
goto excep_or_pure_k_ret
; guaranteed to be an interrupt
if !Interrupt(L2)
goto l1_ret
else
INTERRUPT_EPILOGUE 2
; by virtue of above, no need to chk for L1 active
l1_ret:
INTERRUPT_EPILOGUE 1
excep_or_pure_k_ret:
EXCEPTION_EPILOGUE
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
The requirement is to
- Reenable Exceptions (AE cleared)
- Reenable Interrupts (E1/E2 set)
We need to do wiggle these bits into ERSTATUS and call RTIE.
Prev version used the pre-exception STATUS32 as starting point for what
goes into ERSTATUS. This required explicit fixups of U/DE/L bits.
Instead, use the current (in-exception) STATUS32 as starting point.
Being in exception handler U/DE/L can be safely assumed to be correct.
Only AE/E1/E2 need to be fixed.
So the new implementation is slightly better
-Avoids read form memory
-Is 4 bytes smaller for the typical 1 level of intr configuration
-Depicts the semantics more clearly
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Historically this was done by ARC IDE driver, which is long gone.
IRQ core is pretty robust now and already checks if IRQs are enabled
in hard ISRs. Thus no point in checking this in arch code, for every
call of irq enabled.
Further if some driver does do that - let it bring down the system so we
notice/fix this sooner than covering up for sucker
This makes local_irq_enable() - for L1 only case atleast simple enough
so we can inline it.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Implement the TLB flush routine to evict a sepcific Super TLB entry,
vs. moving to a new ASID on every such flush.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
MMUv4 in HS38x cores supports Super Pages which are basis for Linux THP
support.
Normal and Super pages can co-exist (ofcourse not overlap) in TLB with a
new bit "SZ" in TLB page desciptor to distinguish between them.
Super Page size is configurable in hardware (4K to 16M), but fixed once
RTL builds.
The exact THP size a Linx configuration will support is a function of:
- MMU page size (typical 8K, RTL fixed)
- software page walker address split between PGD:PTE:PFN (typical
11:8:13, but can be changed with 1 line)
So for above default, THP size supported is 8K * 256 = 2M
Default Page Walker is 2 levels, PGD:PTE:PFN, which in THP regime
reduces to 1 level (as PTE is folded into PGD and canonically referred
to as PMD).
Thus thp PMD accessors are implemented in terms of PTE (just like sparc)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
On boards with more than 2GB of RAM booting goes wrong with things not
working and we're getting lots of l3 warnings:
WARNING: CPU: 0 PID: 1 at drivers/bus/omap_l3_noc.c:147
l3_interrupt_handler+0x260/0x384()
44000000.ocp:L3 Custom Error: MASTER MMC6 TARGET DMM1 (Idle):
Data Access in User mode during Functional access
...
[<c044e158>] (scsi_add_host_with_dma) from [<c04705c8>]
(ata_scsi_add_hosts+0x5c/0x18c)
[<c04705c8>] (ata_scsi_add_hosts) from [<c046b13c>]
(ata_host_register+0x150/0x2cc)
[<c046b13c>] (ata_host_register) from [<c046b38c>]
(ata_host_activate+0xd4/0x124)
[<c046b38c>] (ata_host_activate) from [<c047f42c>]
(ahci_host_activate+0x5c/0x194)
[<c047f42c>] (ahci_host_activate) from [<c0480854>]
(ahci_platform_init_host+0x1f0/0x3f0)
[<c0480854>] (ahci_platform_init_host) from [<c047c9dc>]
(ahci_probe+0x70/0x98)
[<c047c9dc>] (ahci_probe) from [<c04220cc>]
(platform_drv_probe+0x54/0xb4)
Let's fix the issue by enabling ZONE_DMA for LPAE. Note that we need to
limit dma_zone_size to 2GB as the rest of the RAM is beyond the 4GB limit.
Let's also fix things for dra7 as done in similar patches in the TI tree
by Lokesh Vutla <lokeshvutla@ti.com>.
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
- Re-enable CONFIG_SCSI_DH in our defconfigs
- Remove unused os_area_db_id_video_mode
- cxl: fix leak of IRQ names in cxl_free_afu_irqs() from Andrew
- cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API from Andrew
- cxl: fix leak of ctx->mapping when releasing kernel API contexts from Andrew
- cxl: Workaround malformed pcie packets on some cards from Philippe
- cxl: Fix number of allocated pages in SPA from Christophe Lombard
- Fix checkstop in native_hpte_clear() with lockdep from Cyril
- Panic on unhandled Machine Check on powernv from Daniel
- selftests/powerpc: Fix build failure of load_unaligned_zeropad test
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Merge tag 'powerpc-4.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Re-enable CONFIG_SCSI_DH in our defconfigs
- Remove unused os_area_db_id_video_mode
- cxl: fix leak of IRQ names in cxl_free_afu_irqs() from Andrew
- cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API from Andrew
- cxl: fix leak of ctx->mapping when releasing kernel API contexts from Andrew
- cxl: Workaround malformed pcie packets on some cards from Philippe
- cxl: Fix number of allocated pages in SPA from Christophe Lombard
- Fix checkstop in native_hpte_clear() with lockdep from Cyril
- Panic on unhandled Machine Check on powernv from Daniel
- selftests/powerpc: Fix build failure of load_unaligned_zeropad test
* tag 'powerpc-4.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
selftests/powerpc: Fix build failure of load_unaligned_zeropad test
powerpc/powernv: Panic on unhandled Machine Check
powerpc: Fix checkstop in native_hpte_clear() with lockdep
cxl: Fix number of allocated pages in SPA
cxl: Workaround malformed pcie packets on some cards
cxl: fix leak of ctx->mapping when releasing kernel API contexts
cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API
cxl: fix leak of IRQ names in cxl_free_afu_irqs()
powerpc/ps3: Remove unused os_area_db_id_video_mode
powerpc/configs: Re-enable CONFIG_SCSI_DH
Merge misc fixes from Andrew Morton:
"6 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
sh: add copy_user_page() alias for __copy_user()
lib/Kconfig: ZLIB_DEFLATE must select BITREVERSE
mm, dax: fix DAX deadlocks
memcg: convert threshold to bytes
builddeb: remove debian/files before build
mm, fs: obey gfp_mapping for add_to_page_cache()
copy_user_page() is needed by DAX. Without this we get a compile error
for DAX on SH:
fs/dax.c:280:2: error: implicit declaration of function `copy_user_page' [-Werror=implicit-function-declaration]
copy_user_page(vto, (void __force *)vfrom, vaddr, to);
^
This was done with a random config that happened to include DAX support.
This patch has only been compile tested.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A sporadic hang with consequent crash is observed when booting Hyper-V Gen1
guests:
Call Trace:
<IRQ>
[<ffffffff810ab68d>] ? trace_hardirqs_off+0xd/0x10
[<ffffffff8107b616>] queue_work_on+0x46/0x90
[<ffffffff81365696>] ? add_interrupt_randomness+0x176/0x1d0
...
<EOI>
[<ffffffff81471ddb>] ? _raw_spin_unlock_irqrestore+0x3b/0x60
[<ffffffff810c295e>] __irq_put_desc_unlock+0x1e/0x40
[<ffffffff810c5c35>] irq_modify_status+0xb5/0xd0
[<ffffffff8104adbb>] mp_register_handler+0x4b/0x70
[<ffffffff8104c55a>] mp_irqdomain_alloc+0x1ea/0x2a0
[<ffffffff810c7f10>] irq_domain_alloc_irqs_recursive+0x40/0xa0
[<ffffffff810c860c>] __irq_domain_alloc_irqs+0x13c/0x2b0
[<ffffffff8104b070>] alloc_isa_irq_from_domain.isra.1+0xc0/0xe0
[<ffffffff8104bfa5>] mp_map_pin_to_irq+0x165/0x2d0
[<ffffffff8104c157>] pin_2_irq+0x47/0x80
[<ffffffff81744253>] setup_IO_APIC+0xfe/0x802
...
[<ffffffff814631c0>] ? rest_init+0x140/0x140
The issue is easily reproducible with a simple instrumentation: if
mdelay(10) is put between mp_setup_entry() and mp_register_handler() calls
in mp_irqdomain_alloc() Hyper-V guest always fails to boot when re-routing
IRQ0. The issue seems to be caused by the fact that we don't disable
interrupts while doing IOPIC programming for legacy IRQs and IRQ0 actually
happens.
Protect the setup sequence against concurrent interrupts.
[ tglx: Make the protection unconditional and not only for legacy
interrupts ]
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Link: http://lkml.kernel.org/r/1444930943-19336-1-git-send-email-vkuznets@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
On 32-bit systems, the initial_page_table is reused by
efi_call_phys_prolog as an identity map to call
SetVirtualAddressMap. efi_call_phys_prolog takes care of
converting the current CPU's GDT to a physical address too.
For PAE kernels the identity mapping is achieved by aliasing the
first PDPE for the kernel memory mapping into the first PDPE
of initial_page_table. This makes the EFI stub's trick "just work".
However, for non-PAE kernels there is no guarantee that the identity
mapping in the initial_page_table extends as far as the GDT; in this
case, accesses to the GDT will cause a page fault (which quickly becomes
a triple fault). Fix this by copying the kernel mappings from
swapper_pg_dir to initial_page_table twice, both at PAGE_OFFSET and at
identity mapping.
For some reason, this is only reproducible with QEMU's dynamic translation
mode, and not for example with KVM. However, even under KVM one can clearly
see that the page table is bogus:
$ qemu-system-i386 -pflash OVMF.fd -M q35 vmlinuz0 -s -S -daemonize
$ gdb
(gdb) target remote localhost:1234
(gdb) hb *0x02858f6f
Hardware assisted breakpoint 1 at 0x2858f6f
(gdb) c
Continuing.
Breakpoint 1, 0x02858f6f in ?? ()
(gdb) monitor info registers
...
GDT= 0724e000 000000ff
IDT= fffbb000 000007ff
CR0=0005003b CR2=ff896000 CR3=032b7000 CR4=00000690
...
The page directory is sane:
(gdb) x/4wx 0x32b7000
0x32b7000: 0x03398063 0x03399063 0x0339a063 0x0339b063
(gdb) x/4wx 0x3398000
0x3398000: 0x00000163 0x00001163 0x00002163 0x00003163
(gdb) x/4wx 0x3399000
0x3399000: 0x00400003 0x00401003 0x00402003 0x00403003
but our particular page directory entry is empty:
(gdb) x/1wx 0x32b7000 + (0x724e000 >> 22) * 4
0x32b7070: 0x00000000
[ It appears that you can skate past this issue if you don't receive
any interrupts while the bogus GDT pointer is loaded, or if you avoid
reloading the segment registers in general.
Andy Lutomirski provides some additional insight:
"AFAICT it's entirely permissible for the GDTR and/or LDT
descriptor to point to unmapped memory. Any attempt to use them
(segment loads, interrupts, IRET, etc) will try to access that memory
as if the access came from CPL 0 and, if the access fails, will
generate a valid page fault with CR2 pointing into the GDT or
LDT."
Up until commit 23a0d4e8fa ("efi: Disable interrupts around EFI
calls, not in the epilog/prolog calls") interrupts were disabled
around the prolog and epilog calls, and the functional GDT was
re-installed before interrupts were re-enabled.
Which explains why no one has hit this issue until now. ]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
[ Updated changelog. ]
- Fix module CFLAGS setting in workaround for erratum #843419
- Update MINSIGSTKSZ and SIGSTKSZ to match glibc
- Wire up some new compat syscalls
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Here are a few more arm64 fixes for 4.3. Again, nothing too
significant, but worth having nonetheless. The MINSIGSTKSZ update is
a bit grotty, but the value we currently have is wrong (too small), so
anybody using that will have issues already. It has Arnd's ack for
the asm-generic change.
Summary:
- Fix module CFLAGS setting in workaround for erratum #843419
- Update MINSIGSTKSZ and SIGSTKSZ to match glibc
- Wire up some new compat syscalls"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: compat: wire up new syscalls
arm64: Fix MINSIGSTKSZ and SIGSTKSZ
arm64: errata: use KBUILD_CFLAGS_MODULE for erratum #843419
While the addition of these properties is technically correct it unveils
a bug with deferred probe. The problem is that the presence of the gpio-
range property causes the gpio-tegra driver to defer probe (it needs the
pinctrl driver to be ready). That's technically correct, but it causes a
couple of issues:
- The keyboard on Chromebooks stops working. The reason for that is
that the gpio-tegra device has not registered an IRQ domain by the
time the EC SPI device is registered, hence the interrupt number
resolves to 0. This is technically a bug in the SPI core, since it
should really resolve the interrupt at probe time and defer if the
IRQ domain isn't available yet. This is similar to what's done for
I2C and platform device already.
- The gpio-tegra device deferring probe means that it is moved to the
end of the dpm_list. This list defines the suspend/resume order for
devices. However the core lacks a way to move all users of the
gpio-tegra device to the end of the dpm_list at the same time. This
in turn results in a subtle bug on Jetson TK1, where the gpio-keys
device is used to expose the power key as input. The power key is a
convenient way to wake the system from suspend. Interestingly, the
gpio-keys device ends up getting probed at a point after gpio-tegra
has been probed successfully from having been deferred earlier. As
such the driver doesn't need to defer the probe itself, and hence
the device isn't moved to the end of the dpm_list. This causes the
gpio-tegra device to be suspended before gpio-keys, which in turn
leaves gpio-keys unable to wake the system from suspend.
There are patches in the works to fix both of the above issues, but they
are too involved to make it into v4.3, so in the meantime let's fix the
regressions by commenting out the gpio-ranges properties until the fixes
have landed.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Regulator fix for beagle-x15 to fix HDMI without a SD card being
inserted
- GPMC fix for showing proper timings and to allow enabling debug
options that somehow was unselectable earlier
- Add minimal documentation for new MMC1 dependency on
REGULATOR_PBIAS as it may not be obvious for people with
targeted .config files
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Merge tag 'omap-for-v4.3/fixes-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "Fixes for omap against v4.3-rc5" from Tony Lindgren:
- Regulator fix for beagle-x15 to fix HDMI without a SD card being
inserted
- GPMC fix for showing proper timings and to allow enabling debug
options that somehow was unselectable earlier
- Add minimal documentation for new MMC1 dependency on
REGULATOR_PBIAS as it may not be obvious for people with
targeted .config files
* tag 'omap-for-v4.3/fixes-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
Documentation: ARM: List new omap MMC requirements
memory: omap-gpmc: dump "before" state before first modification
memory: omap-gpmc: Fix unselectable debug option for GPMC
ARM: dts: am57xx-beagle-x15: set VDD_SD to always-on
The IRQ signal from external devices on this board is connected to
the XIRQ4 pin of the SoC. The IRQ number should be 52, not 50.
Fixes: a5e921b477 ("ARM: dts: uniphier: add ProXstream2 and PH1-LD6b SoC/board support")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
SHA_MAX_STATE_SIZE is just the number of u32 word for SHA512.
So replace the raw value "16" by their meaning (SHA512_DIGEST_SIZE / 4)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit enables standby support on Armada 385 DB-AP board, because
the PM initalization routine requires "marvell,armada380" compatible
string for all Armada 38x-based platforms.
Beside the compatible "marvell,armada38x" was wrong and should be fixed
in the stable kernels too.
[gregory.clement@free-electrons.com: add information, about the fixes]
Fixes: e5ee12817e ("ARM: mvebu: Add Armada 385 Access Point
Development Board support")
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: <stable@vger.kernel.org>
The DTS erronously uses the wrong reg mapping and IRQ numbers for some
UART, WDT and timer nodes. Fix this.
Reported-by: John Wehle <john@feith.com>
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
fix SMM emulation on Nehalem processors. The others fix some cases
that became apparent as work progressed on the firmware side.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Bug fixes for system management mode emulation.
The first two patches fix SMM emulation on Nehalem processors. The
others fix some cases that became apparent as work progressed on the
firmware side"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: fix RSM into 64-bit protected mode
KVM: x86: fix previous commit for 32-bit
KVM: x86: fix SMI to halted VCPU
KVM: x86: clean up kvm_arch_vcpu_runnable
KVM: x86: map/unmap private slots in __x86_set_memory_region
KVM: x86: build kvm_userspace_memory_region in x86_set_memory_region
Some recently added code to avoid a bug introduced a build error
when CONFIG_PM is disabled and a macro is hidden:
arch/arm/mach-pxa/pxa3xx.c: In function 'pxa3xx_init':
arch/arm/mach-pxa/pxa3xx.c:439:3: error: 'NDCR' undeclared (first use in this function)
NDCR = (NDCR & ~NDCR_ND_ARB_EN) | NDCR_ND_ARB_CNTL;
^
This moves the macro outside of the #ifdef so it can be
referenced correctly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: adf3442cc8 ("ARM: pxa: fix DFI bus lockups on startup")
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
It includes a single fix for i.MX7D, which corrects the base address of
UART2 in device tree.
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Merge tag 'imx-fixes-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
Pull "The i.MX fixes for 4.3, 2nd round:" from Shawn Guo:
It includes a single fix for i.MX7D, which corrects the base address of
UART2 in device tree.
* tag 'imx-fixes-4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx7d: Fix UART2 base address
- BG2Q USB PHY compatible fix (also tagged for stable v4.2)
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Merge tag 'berlin-fixes-for-4.3-1' of git://git.infradead.org/users/hesselba/linux-berlin into fixes
Merge "Marvell Berlin fixes for v4.3 take 1" from Sebastian Hesselbarth:
- BG2Q USB PHY compatible fix (also tagged for stable v4.2)
* tag 'berlin-fixes-for-4.3-1' of git://git.infradead.org/users/hesselba/linux-berlin:
ARM: dts: berlin: change BG2Q's USB PHY compatible
They are currently unused, and I don't think that anyone was
ever particularly happy with them. They had the unfortunate
property that they made it easy to CFI-annotate things without
thinking about them -- when pushing, do you want to just update
the CFA offset, or do you also want to update the saved location
of the register being pushed?
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1447bfbd10bb268b4593b32534ecefa1f4df287e.1444696194.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
non-modular by ripping out the module_* code since Kconfig doesn't
allow it to be built as a module anyway - Paul Gortmaker
* Make the x86 efi=debug kernel parameter, which enables EFI debug
code and output, generic and usable by arm64 - Leif Lindholm
* Add support to the x86 EFI boot stub for 64-bit Graphics Output
Protocol frame buffer addresses - Matt Fleming
* Detect when the UEFI v2.5 EFI_PROPERTIES_TABLE feature is enabled
in the firmware and set an efi.flags bit so the kernel knows when
it can apply more strict runtime mapping attributes - Ard Biesheuvel
* Auto-load the efi-pstore module on EFI systems, just like we
currently do for the efivars module - Ben Hutchings
* Add "efi_fake_mem" kernel parameter which allows the system's EFI
memory map to be updated with additional attributes for specific
memory ranges. This is useful for testing the kernel code that handles
the EFI_MEMORY_MORE_RELIABLE memmap bit even if your firmware
doesn't include support - Taku Izumi
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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into core/efi
Pull v4.4 EFI updates from Matt Fleming:
- Make the EFI System Resource Table (ESRT) driver explicitly
non-modular by ripping out the module_* code since Kconfig doesn't
allow it to be built as a module anyway. (Paul Gortmaker)
- Make the x86 efi=debug kernel parameter, which enables EFI debug
code and output, generic and usable by arm64. (Leif Lindholm)
- Add support to the x86 EFI boot stub for 64-bit Graphics Output
Protocol frame buffer addresses. (Matt Fleming)
- Detect when the UEFI v2.5 EFI_PROPERTIES_TABLE feature is enabled
in the firmware and set an efi.flags bit so the kernel knows when
it can apply more strict runtime mapping attributes - Ard Biesheuvel
- Auto-load the efi-pstore module on EFI systems, just like we
currently do for the efivars module. (Ben Hutchings)
- Add "efi_fake_mem" kernel parameter which allows the system's EFI
memory map to be updated with additional attributes for specific
memory ranges. This is useful for testing the kernel code that handles
the EFI_MEMORY_MORE_RELIABLE memmap bit even if your firmware
doesn't include support. (Taku Izumi)
Note: there is a semantic conflict between the following two commits:
8a53554e12 ("x86/efi: Fix multiple GOP device support")
ae2ee627dc ("efifb: Add support for 64-bit frame buffer addresses")
I fixed up the interaction in the merge commit, changing the type of
current_fb_base from u32 to u64.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In order to get into 64-bit protected mode, you need to enable
paging while EFER.LMA=1. For this to work, CS.L must be 0.
Currently, we load the segments before CR0 and CR4, which means
that if RSM returns into 64-bit protected mode CS.L is already 1
and everything breaks.
Luckily, CS.L=0 is always the case when executing RSM, because it
is forbidden to execute RSM from 64-bit protected mode. Hence it
is enough to load CR0 and CR4 first, and only then the segments.
Fixes: 660a5d517a
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
New bindings and driver have been created for STM32 series parts. This
patch integrates this changes.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When multiple GOP devices exists, but none of them implements
ConOut, the code should just choose the first GOP (according to
the comments). But currently 'fb_base' will refer to the last GOP,
while other parameters to the first GOP, which will likely
result in a garbled display.
I can reliably reproduce this bug using my ASRock Z87M Extreme4
motherboard with CSM and integrated GPU disabled, and two PCIe
video cards (NVidia GT640 and GTX980), booting from efi-stub
(booting from grub works fine). On the primary display the
ASRock logo remains and on the secondary screen it is garbled
up completely.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: <stable@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444659236-24837-2-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit 208473c1f3 ("ARM: wire up new syscalls") hooked up the new
userfaultfd and membarrier syscalls for ARM, so do the same for our
compat syscall table in arm64.
Signed-off-by: Will Deacon <will.deacon@arm.com>
There are following warnings on unpatched code:
arch/x86/kernel/early_printk.c:198:32: warning: incorrect type in initializer (different address spaces)
arch/x86/kernel/early_printk.c:198:32: expected void [noderef] <asn:2>*vaddr
arch/x86/kernel/early_printk.c:198:32: got unsigned int [usertype] *<noident>
arch/x86/kernel/early_printk.c:205:32: warning: incorrect type in initializer (different address spaces)
arch/x86/kernel/early_printk.c:205:32: expected void [noderef] <asn:2>*vaddr
arch/x86/kernel/early_printk.c:205:32: got unsigned int [usertype] *<noident>
Annotate it proper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/1444646837-42615-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull crypto fixes from Herbert Xu:
"This fixes the following issues:
- Fix AVX detection to prevent use of non-existent AESNI.
- Some SPARC ciphers did not set their IV size which may lead to
memory corruption"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: ahash - ensure statesize is non-zero
crypto: camellia_aesni_avx - Fix CPU feature checks
crypto: sparc - initialize blkcipher.ivsize
Since we now have a generic data structure to express an
interrupt specifier, convert all hierarchical irqchips that
are OF based to use a fwnode_handle as part of their alloc
and xlate (which becomes translate) callbacks.
As most of these drivers have dependencies (they exchange IRQ
specifiers), change them all in a single, massive patch...
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Graeme Gregory <graeme@xora.org.uk>
Cc: Jake Oshins <jakeo@microsoft.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1444737105-31573-6-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The struct irq_domain contains a "struct device_node *" field
(of_node) that is almost the only link between the irqdomain
and the device tree infrastructure.
In order to prepare for the removal of that field, convert all
users to use irq_domain_get_of_node() instead.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Graeme Gregory <graeme@xora.org.uk>
Cc: Jake Oshins <jakeo@microsoft.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1444737105-31573-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
An SMI to a halted VCPU must wake it up, hence a VCPU with a pending
SMI must be considered runnable.
Fixes: 64d6067057
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Split the huge conditional in two functions.
Fixes: 64d6067057
Cc: stable@vger.kernel.org
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Otherwise, two copies (one of them never populated and thus bogus)
are allocated for the regular and SMM address spaces. This breaks
SMM with EPT but without unrestricted guest support, because the
SMM copy of the identity page map is all zeros.
By moving the allocation to the caller we also remove the last
vestiges of kernel-allocated memory regions (not accessible anymore
in userspace since commit b74a07beed, "KVM: Remove kernel-allocated
memory regions", 2010-06-21); that is a nice bonus.
Reported-by: Alexandre DERUMIER <aderumier@odiso.com>
Cc: stable@vger.kernel.org
Fixes: 9da0e4d5ac
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The next patch will make x86_set_memory_region fill the
userspace_addr. Since the struct is not used untouched
anymore, it makes sense to build it in x86_set_memory_region
directly; it also simplifies the callers.
Reported-by: Alexandre DERUMIER <aderumier@odiso.com>
Cc: stable@vger.kernel.org
Fixes: 9da0e4d5ac
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
LDO1 regulator (VDD_SD) is connected to SoC's vddshv8. vddshv8 needs to
be kept always powered (see commit 5a0f93c657 ("ARM: dts: Add
am57xx-beagle-x15"), but at the moment VDD_SD is enabled/disabled
depending on whether an SD card is inserted or not.
This patch sets LDO1 regulator to always-on.
This patch has a side effect of fixing another issue, HDMI DDC not
working when SD card is not inserted:
Why this happens is that the tpd12s015 (HDMI level shifter/ESD
protection chip) has LS_OE GPIO input, which needs to be enabled for the
HDMI DDC to work. LS_OE comes from gpio6_28. The pin that provides
gpio6_28 is powered by vddshv8, and vddshv8 comes from VDD_SD.
So when SD card is not inserted, VDD_SD is disabled, and LS_OE stays
off.
The proper fix for the HDMI DDC issue would be to maybe have the pinctrl
framework manage the pin specific power.
Apparently this fixes also a third issue (copy paste from Kishon's
patch):
ldo1_reg in addition to being connected to the io lines is also
connected to the card detect line. On card removal, omap_hsmmc
driver does a regulator_disable causing card detect line to be
pulled down. This raises a card insertion interrupt and once the
MMC core detects there is no card inserted, it does a
regulator disable which again raises a card insertion interrupt.
This happens in a loop causing infinite MMC interrupts.
Fixes: 5a0f93c657 ("ARM: dts: Add am57xx-beagle-x15")
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Louis McCarthy <compeoree@gmail.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
On each next iteration of for_each_compatible_node() the reference
counter for current device node is already decreased by the loop
iterator. The manual call to of_node_get() is required only on loop
break which is not happening here.
The double of_node_get() (with enabled CONFIG_OF_DYNAMIC) lead to
decreasing the counter below expected, initial value.
Fixes: fe4034a3fa ("ARM: EXYNOS: Add missing of_node_put() when parsing power domains")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
MINSIGSTKSZ and SIGSTKSZ for ARM64 are not correctly set in latest kernel.
This patch fixes this issue.
This issue is reported in LTP (testcase: sigaltstack02.c).
Testcase failed when sigaltstack() called with stack size "MINSIGSTKSZ - 1"
Since in Glibc-2.22, MINSIGSTKSZ is set to 5120 but in kernel
it is set to 2048 so testcase gets failed.
Testcase Output:
sigaltstack02 1 TPASS : stgaltstack() fails, Invalid Flag value,errno:22
sigaltstack02 2 TFAIL : sigaltstack() returned 0, expected -1,errno:12
Reported Issue in Glibc Bugzilla:
Bugfix in Glibc-2.22: [Bug 16850]
https://sourceware.org/bugzilla/show_bug.cgi?id=16850
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Manjeet Pawar <manjeet.p@samsung.com>
Signed-off-by: Rohit Thapliyal <r.thapliyal@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Commit df057cc7b4 ("arm64: errata: add module build workaround for
erratum #843419") sets CFLAGS_MODULE to ensure that the large memory
model is used by the compiler when building kernel modules.
However, CFLAGS_MODULE is an environment variable and intended to be
overridden on the command line, which appears to be the case with the
Ubuntu kernel packaging system, so use KBUILD_CFLAGS_MODULE instead.
Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: df057cc7b4 ("arm64: errata: add module build workaround for erratum #843419")
Reported-by: Dann Frazier <dann.frazier@canonical.com>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
A certain number of patch levels of applied microcode should not
be overwritten by the microcode loader, otherwise bad things
will happen.
Check those and abort update if the current core has one of
those final patch levels applied by the BIOS. 32-bit needs
special handling, of course.
See https://bugzilla.suse.com/show_bug.cgi?id=913996 for more
info.
Tested-by: Peter Kirchgeßner <pkirchgessner@t-online.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1444641762-9437-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pave the way for checking the current patch level of the
microcode in a core. We want to be able to do stuff depending on
the patch level - in this case decide whether to update or not.
But that will be added in a later patch.
Drop unused local var uci assignment, while at it.
Integrate a fix for 32-bit and CONFIG_PARAVIRT from Takashi Iwai:
Use native_rdmsr() in check_current_patch_level() because with
CONFIG_PARAVIRT enabled and on 32-bit, where we run before
paging has been enabled, we cannot deref pv_info yet. Or we
could, but we'd need to access its physical address. This way of
fixing it is simpler. See:
https://bugzilla.suse.com/show_bug.cgi?id=943179 for the background.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Takashi Iwai <tiwai@suse.com>:
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1444641762-9437-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Bank 4 MCEs are logged and reported only on the node base core
(NBC) in a socket. Refer to the D18F3x44[NbMcaToMstCpuEn] field
in Fam10h and later BKDGs. The node base core (NBC) is the
lowest numbered core in the node.
This patch ensures that we inject the error on the NBC for bank
4 errors. Otherwise, triggering #MC or APIC interrupts on a core
which is not the NBC would not have any effect on the system,
i.e. we would not see any relevant output on kernel logs for the
error we just injected.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanup comments. ]
[ Add a missing dependency on AMD_NB caught by Randy Dunlap. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-4-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Add the capability to trigger deferred error interrupts and
threshold interrupts in order to test the APIC interrupt handler
functionality for these type of errors.
Update README section about the same too.
Reported by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanup comments. ]
[ Include asm/irq_vectors.h directly so that misc randbuilds don't fail. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-3-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Invalid inputs such as these are currently reported in dmesg as
failing:
$> echo sweet > flags
[ 122.079139] flags_write: Invalid flags value: et
even though the 'flags' attribute has been updated correctly:
$> cat flags
sw
This is because userspace keeps writing the remaining buffer
until it encounters an error.
However, the input as a whole is wrong and we should not be
writing anything to the file. Therefore, correct flags_write()
to return -EINVAL immediately on bad input strings.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-2-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch introduces new boot option named "efi_fake_mem".
By specifying this parameter, you can add arbitrary attribute
to specific memory range.
This is useful for debugging of Address Range Mirroring feature.
For example, if "efi_fake_mem=2G@4G:0x10000,2G@0x10a0000000:0x10000"
is specified, the original (firmware provided) EFI memmap will be
updated so that the specified memory regions have
EFI_MEMORY_MORE_RELIABLE attribute (0x10000):
<original>
efi: mem36: [Conventional Memory| | | | | | |WB|WT|WC|UC] range=[0x0000000100000000-0x00000020a0000000) (129536MB)
<updated>
efi: mem36: [Conventional Memory| |MR| | | | |WB|WT|WC|UC] range=[0x0000000100000000-0x0000000180000000) (2048MB)
efi: mem37: [Conventional Memory| | | | | | |WB|WT|WC|UC] range=[0x0000000180000000-0x00000010a0000000) (61952MB)
efi: mem38: [Conventional Memory| |MR| | | | |WB|WT|WC|UC] range=[0x00000010a0000000-0x0000001120000000) (2048MB)
efi: mem39: [Conventional Memory| | | | | | |WB|WT|WC|UC] range=[0x0000001120000000-0x00000020a0000000) (63488MB)
And you will find that the following message is output:
efi: Memory: 4096M/131455M mirrored memory
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This patch renames print_efi_memmap() to efi_print_memmap() and
make it global function so that we can invoke it outside of
arch/x86/platform/efi/efi.c
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
The EFI Graphics Output Protocol uses 64-bit frame buffer addresses
but these get truncated to 32-bit by the EFI boot stub when storing
the address in the 'lfb_base' field of 'struct screen_info'.
Add a 'ext_lfb_base' field for the upper 32-bits of the frame buffer
address and set VIDEO_TYPE_CAPABILITY_64BIT_BASE when the field is
useable.
It turns out that the reason no one has required this support so far
is that there's actually code in tianocore to "downgrade" PCI
resources that have option ROMs and 64-bit BARS from 64-bit to 32-bit
to cope with legacy option ROMs that can't handle 64-bit addresses.
The upshot is that basically all GOP devices in the wild use a 32-bit
frame buffer address.
Still, it is possible to build firmware that uses a full 64-bit GOP
frame buffer address. Chad did, which led to him reporting this issue.
Add support in anticipation of GOP devices using 64-bit addresses more
widely, and so that efifb works out of the box when that happens.
Reported-by: Chad Page <chad.page@znyx.com>
Cc: Pete Hawkins <pete.hawkins@znyx.com>
Acked-by: Peter Jones <pjones@redhat.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
As we now have a common debug infrastructure between core and arm64 efi,
drop the bit of the interface passing verbose output flags around.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Now that we have an efi=debug command line option in the core code, use
this instead of the arm64-specific uefi_debug option.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
fed6cefe3b ("x86/efi: Add a "debug" option to the efi= cmdline")
adds the DBG flag, but does so for x86 only. Move this early param
parsing to core code.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Previously, UV NMI used the 'in_crash_kexec' flag to determine whether
we are in a kdump kernel or not:
5edd19af18 ("x86, UV: Make kdump avoid stack dumps")
But this flags was removed in the following commit:
9c48f1c629 ("x86, nmi: Wire up NMI handlers to new routines")
Since it isn't used any more, remove it.
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: cpw@sgi.com
Cc: kexec@lists.infradead.org
Cc: mhuang@redhat.com
Link: http://lkml.kernel.org/r/1444070155-17934-1-git-send-email-mhuang@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
asm/ioctls.h contains definition for termios, not just the _IO* macros.
This error was found with a tool in development used to generate
automated pretty-printing functions for ioctl decoding in strace.
Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1444141657-14898-2-git-send-email-gabriel@lse.epita.fr
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
We have to define internally used function as static, otherwise the following
warning will be generated:
arch/x86/kernel/apic/io_apic.c:532:6: warning: no previous prototype for 'eoi_ioapic_pin' [-Wmissing-prototypes]
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com>
Link: http://lkml.kernel.org/r/1444400685-98611-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The following warning is issued on unfixed code.
arch/x86/platform/intel-mid/intel-mid.c:64:22: warning: symbol 'intel_mid_ops' was not declared. Should it be static?
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/1444400741-98669-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The code under the label can normally be inline, without the
jumping back and forth but the latter is an optimization.
Document that.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20151009170859.GA24266@pd.tnic
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull MIPS fixes from Ralf Baechle:
- MIPS didn't define the new ioremap_uc. Defined it as an alias for
ioremap_uncached.
- Replace workaround for MIPS16 build issue with a correct one.
* git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Define ioremap_uc
MIPS: UAPI: Ignore __arch_swab{16,32,64} when using MIPS16
Revert "MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16."
Pull swiotlb fixlet from Konrad Rzeszutek Wilk:
"Enable the SWIOTLB under 32-bit PAE kernels.
Nowadays most distros enable this due to CONFIG_HYPERVISOR|XEN=y which
select SWIOTLB. But for those that are not interested in
virtualization and wanting to use 32-bit PAE kernels and wanting to
have working DMA operations - this configures it for them"
* 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: Enable it under x86 PAE
Pull strscpy powerpc fix from Chris Metcalf.
Fix powerpc big-endian build.
* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
arch/powerpc: provide zero_bytemask() for big-endian
The fixes for this week include one small patch that was years in the
making and that finally fixes using all eight CPUs on exynos542x.
The rest are lots of minor changes for sunxi, imx, exynos and shmobile
* fixing the minimum voltage for Allwinner A20
* thermal boot issue on SMDK5250.
* invalid clock used for FIMD IOMMU.
* audio on Renesas r8a7790/r8a7791
* invalid clock used for FIMD IOMMU
* LEDs on exynos5422-odroidxu3-common
* usb pin control for imx-rex
* imx53: fix PMIC interrupt level
* a Makefile typo
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"The fixes for this week include one small patch that was years in the
making and that finally fixes using all eight CPUs on exynos542x.
The rest are lots of minor changes for sunxi, imx, exynos and shmobile
- fixing the minimum voltage for Allwinner A20
- thermal boot issue on SMDK5250.
- invalid clock used for FIMD IOMMU.
- audio on Renesas r8a7790/r8a7791
- invalid clock used for FIMD IOMMU
- LEDs on exynos5422-odroidxu3-common
- usb pin control for imx-rex
- imx53: fix PMIC interrupt level
- a Makefile typo"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420
ARM: dts: Fix bootup thermal issue on smdk5250
ARM: shmobile: r8a7791 dtsi: Add CPG/MSTP Clock Domain for sound
ARM: shmobile: r8a7790 dtsi: Add CPG/MSTP Clock Domain for sound
arm-cci500: Don't enable PMU driver by default
ARM: dts: fix usb pin control for imx-rex dts
ARM: imx53: qsrb: fix PMIC interrupt level
ARM: imx53: include IRQ dt-bindings header
ARM: dts: add suspend opp to exynos4412
ARM: dts: Fix LEDs on exynos5422-odroidxu3
ARM: EXYNOS: reset Little cores when cpu is up
ARM: dts: Fix Makefile target for sun4i-a10-itead-iteaduino-plus
ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
Hardware virtualisation of GICv3 is only supported by 64bit hosts for
the moment. Some VGICv3 bits are missing from the 32bit side, and this
patch allows to still be able to build 32bit hosts when CONFIG_ARM_GIC_V3
is selected.
To this end, we introduce a new option, CONFIG_KVM_ARM_VGIC_V3, that is
only enabled on the 64bit side. The selection is done unconditionally
because CONFIG_ARM_GIC_V3 is always enabled on arm64.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This patch allows ARM guests to use GICv3 on an arm64 host
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Implement the system and memory-mapped register accesses in
asm/arch_gicv3.h for 32bit architectures.
This patch is a straightforward translation of the arm64 header. 64bit
accesses are done in two times and don't need atomicity: TYPER is
read-only, and the upper-word of IROUTER is always zero on 32bit
architectures.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
On 32bit platforms, we cannot assure that an I/O ldrd or strd will be
done atomically. Besides, an hypervisor would be unable to emulate such
accesses.
In order to allow the AArch32 version of the driver to split them into
two 32bit accesses while keeping the requirement for atomic writes, this
patch specializes the IROUTER and TYPER accesses.
Since the latter is an ID register, it won't need to be read atomically,
but we still avoid future confusion by using gic_read_typer instead of a
generic gic_readq.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This patch does a few simple compatibility-related changes:
- change the system register access prototypes to their actual size,
- homogenise mpidr accesses with unsigned long,
- force the 64bit register values to unsigned long long.
Note: the list registers are 64bit on GICv3, but the AArch32 vGIC driver
will need to split their values into two 32bit registers: LRn and LRCn.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This patch moves the GICv3 system register access helpers to
arch/arm64/. Their 32bit counterparts will need to use mrc/mcr accesses
instead of mrs_s/msr_s.
[maz: fixed conflict with Cavium erratum handling]
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
As the firmware (or the hypervisor) may have disabled SRE access,
check that SRE can actually be enabled before declaring that we
do have that capability.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Contrary to what was originally expected, EL3 firmware can (for whatever
reason) disable GICv3 system register access. In this case, the kernel
explodes very early.
Work around this by testing if the SRE bit sticks or not. If it doesn't,
abort the GICv3 setup, and pray that the firmware has passed a DT that
doesn't contain a GICv3 node.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Since support for half-word atomic exchange was not there and Qspinlock
on ARM requires it, modified __xchg() to add support for that as well.
ARMv6 and lower does not support ldrex{b,h} so, added a guard code to
prevent build breaks.
Signed-off-by: Sarbojit Ganguly <ganguly.s@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rename feat_c3stop to twd_features to match the other variables in this
file. Initialise it with the standard features that we always support,
and arrange to set the CLOCK_EVT_FEAT_C3STOP when appropriate.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
In 5388a6b266 ("ARM: SMP: Always enable clock event broadcast support")
Russell noted that "the TWD local timers are unable to wake up the CPU
when it is placed into a low power mode".
However, some platforms do not stop the TWD block in low-power mode,
and can thus use the TWD timer in one-shot mode, without setting up
a broadcast device.
Make the driver check for the "always-on" boolean property, and set
the CLOCK_EVT_FEAT_C3STOP flag accordingly.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARC is the only arch with unsigned long type (vs. struct page *).
Historically this was done to avoid the page_address() calls in various
arch hooks which need to get the virtual/logical address of the table.
Some arches alternately define it as pte_t *, and is as efficient as
unsigned long (generated code doesn't change)
Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
GCC is unable to properly optimize functions that have a very
short likely case and a longer and register-heavier cold part --
it fails to sink all of the register saving and stack frame
setup code into the unlikely part.
Help it out with syscall_return_slowpath() by splitting it into
two parts and inline the hot part.
Saves 6 cycles for compat syscalls.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/0f773a894ab15c589ac794c2d34ca6ba9b5335c9.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
GCC is unable to properly optimize functions that have a very
short likely case and a longer and register-heavier cold part --
it fails to sink all of the register saving and stack frame
setup code into the unlikely part.
Help it out with prepare_exit_to_usermode() by splitting it into
two parts and inline the hot part.
Saves 6-8 cycles for compat syscalls.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/9fc53eda4a5b924070952f12fa4ae3e477640a07.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This shaves a few cycles off the slow paths.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/ce383fa9e129286ce6da6e00b53acd4c9fb5d06a.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We're following a 32-bit pointer, and the uaccess code isn't
smart enough to figure out that the access_ok() check isn't
needed.
This saves about three cycles on a cache-hot fast syscall.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/bdff034e2f23c5eb974c760cf494cb5bddce8f29.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
On systems that support fast syscalls, we only really care about
the performance of the fast syscall path. Forcibly inline it
and add a likely annotation.
This saves 4-6 cycles.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/8472036ff1f4b426b4c4c3e3d0b3bf5264407c0c.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
These checks are quite slow. Disable them in non-lockdep
kernels to reduce the performance hit.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/eccff2a154ae6fb50f40228901003a6e9c24f3d0.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This is slightly messy, but it eliminates an unnecessary cli;sti
pair.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/22f34b1096694a37326f36c53407b8dd90f37948.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
It's no longer needed.
We could reinstate something like it as an optimization, which
would remove two cachelines from the fast syscall entry working
set. I benchmarked it, and it makes no difference whatsoever to
the performance of cache-hot compat syscalls on Sandy Bridge.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/f08cc0cff30201afe9bb565c47134c0a6c1a96a2.1444091585.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
