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8eff8a5c1d
linux/arch/cris/include/asm
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Russell King 4b3073e1c5 MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself 
On VIVT ARM, when we have multiple shared mappings of the same file
in the same MM, we need to ensure that we have coherency across all
copies.  We do this via make_coherent() by making the pages
uncacheable.

This used to work fine, until we allowed highmem with highpte - we
now have a page table which is mapped as required, and is not available
for modification via update_mmu_cache().

Ralf Beache suggested getting rid of the PTE value passed to
update_mmu_cache():

  On MIPS update_mmu_cache() calls __update_tlb() which walks pagetables
  to construct a pointer to the pte again.  Passing a pte_t * is much
  more elegant.  Maybe we might even replace the pte argument with the
  pte_t?

Ben Herrenschmidt would also like the pte pointer for PowerPC:

  Passing the ptep in there is exactly what I want.  I want that
  -instead- of the PTE value, because I have issue on some ppc cases,
  for I$/D$ coherency, where set_pte_at() may decide to mask out the
  _PAGE_EXEC.

So, pass in the mapped page table pointer into update_mmu_cache(), and
remove the PTE value, updating all implementations and call sites to
suit.

Includes a fix from Stephen Rothwell:

  sparc: fix fallout from update_mmu_cache API change

  Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-20 16:41:46 +00:00
..
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
atomic.h asm-generic: rename atomic.h to atomic-long.h 2009-06-11 21:02:17 +02:00
auxvec.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
axisflashmap.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
bitops.h cris: define __fls 2009-01-03 15:37:14 +10:30
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
bug.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
bugs.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
byteorder.h byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
cache.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
cacheflush.h block: add helpers to run flush_dcache_page() against a bio and a request's pages 2009-11-26 09:16:19 +01:00
checksum.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
cputime.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
current.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
delay.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
device.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
div64.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
dma-mapping.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
dma.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
elf.h elf: kill USE_ELF_CORE_DUMP 2009-12-16 07:20:12 -08:00
emergency-restart.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
errno.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
eshlibld.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ethernet.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
etraxgpio.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
etraxi2c.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
fasttimer.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
fb.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
fcntl.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ftrace.h tracing: make CALLER_ADDRx overwriteable 2009-03-02 16:49:37 -05:00
futex.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
hardirq.h CRIS: convert to asm-generic/hardirq.h 2009-09-01 17:23:32 +02:00
hw_irq.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
io.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ioctl.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ioctls.h tty: Use the generic RS485 ioctl on CRIS 2009-04-07 08:44:05 -07:00
ipcbuf.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
irq_regs.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
irq.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
Kbuild byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
kdebug.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
linkage.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
local.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
mman.h mm: remove duplicate asm/mman.h files 2009-09-22 07:17:42 -07:00
mmu_context.h CRIS: Change DEFINE_PER_CPU of current_pgd to be non volatile. 2009-06-24 15:13:41 +09:00
mmu.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
module.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
msgbuf.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
mutex.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
page.h asm-generic: rename page.h and uaccess.h 2009-06-11 21:02:17 +02:00
param.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
pci.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
percpu.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
pgalloc.h mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() 2009-07-27 12:10:38 -07:00
pgtable.h MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself 2010-02-20 16:41:46 +00:00
poll.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
posix_types.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
processor.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ptrace.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
resource.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
rs485.h tty: Use the generic RS485 ioctl on CRIS 2009-04-07 08:44:05 -07:00
rtc.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
scatterlist.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
sections.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
segment.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
sembuf.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
setup.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
shmbuf.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
shmparam.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
sigcontext.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
siginfo.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
signal.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
smp.h cpumask: centralize cpu_online_map and cpu_possible_map 2008-12-13 21:19:41 +10:30
socket.h net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
sockios.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
spinlock.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
stat.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
statfs.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
string.h CRISv32: Add arch optimized strcmp. 2009-06-10 15:21:03 +02:00
swab.h cris: introduce asm/swab.h 2009-01-14 19:56:49 -08:00
sync_serial.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
system.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
termbits.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
termios.h tty: Use the generic RS485 ioctl on CRIS 2009-04-07 08:44:05 -07:00
thread_info.h sched: INIT_PREEMPT_COUNT 2009-07-10 14:24:05 -07:00
timex.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
tlb.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
tlbflush.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
topology.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
types.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
uaccess.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
ucontext.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
unaligned.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00
unistd.h CRIS: Wire up syscalls signalfd4 to writev. 2009-04-28 17:53:35 +02:00
user.h [CRIS] Move header files from include to arch/cris/include. 2008-10-29 17:29:44 +01:00