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Paul Mundt acca4f4d9b sh: Handle fixmap TLB eviction more coherently. 
There was a race in the kmap_coherent() implementation. While we
guarded against preemption, there was nothing preventing eviction of
the pre-faulted fixmap entry from the UTLB. Under certain workloads
this would result in the fixmap entries used for cache colouring being
evicted from the UTLB in the midst of a copy_page().

In addition to pre-faulting, we also make sure to preserve the PTEs
in the kernel page table and introduce a cached PTE for kmap_coherent()
usage. This follows a similar change on MIPS ("[MIPS] Fix aliasing bug
in copy_to_user_page / copy_from_user_page").

Reported-by: Hideo Saito <saito@densan.co.jp>
Reported-by: CHIKAMA Masaki <masaki.chikama@gmail.com>
Tested-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-10 20:00:45 +09:00
..
.gitignore
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
adc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
addrspace.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
atomic-grb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
atomic-irq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
atomic-llsc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
atomic.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
auxvec.h
sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h.
2008-07-29 23:12:25 +09:00
bitops-grb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
bitops-irq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
bitops-llsc.h
sh: Provide movli.l/movco.l-based bitops.
2008-09-08 10:35:02 +09:00
bitops.h
sh: Provide movli.l/movco.l-based bitops.
2008-09-08 10:35:02 +09:00
bug.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
bugs.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
byteorder.h
sh: use the new byteorder headers.
2008-10-31 16:01:22 +09:00
cache.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
cacheflush.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
checksum_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
checksum_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
checksum.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
clock.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
cmpxchg-grb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
cmpxchg-irq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
cmpxchg-llsc.h
sh: Provide movli.l/movco.l-based cmpxchg.
2008-09-08 10:35:02 +09:00
cpu-features.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
cputime.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
current.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
delay.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
device.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
div64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
dma-mapping.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2008-08-01 10:53:43 -07:00
dma.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
dmabrg.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
elf.h
sh: Fix up some merge damage.
2008-10-20 11:37:58 +09:00
emergency-restart.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
entry-macros.S
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
errno.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
fb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
fcntl.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
fixmap.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
flat.h
sh: Provide a FLAT_PLAT_INIT() definition.
2008-08-11 20:17:55 +09:00
fpu.h
sh: Add FPU registers to regset interface.
2008-09-21 19:04:55 +09:00
freq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ftrace.h
sh: Add missing asm/ftrace.h.
2008-09-21 17:17:53 +09:00
futex-irq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
futex.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
gpio.h
sh: asm/gpio.h needs linux/kernel.h for might_sleep()/WARN_ON().
2008-10-23 12:37:20 +09:00
hardirq.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
hd64461.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
heartbeat.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
hugetlb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
hw_irq.h
sh: Move the shared INTC code out to drivers/sh/
2008-10-01 16:13:54 +09:00
i2c-sh7760.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ilsel.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
io_generic.h
sh: More I/O routine overhauling.
2008-10-04 05:25:52 +09:00
io_trapped.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
io.h
sh: More I/O routine overhauling.
2008-10-04 05:25:52 +09:00
ioctl.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ioctls.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ipcbuf.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
irq_regs.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
irq.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
irqflags_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
irqflags_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
irqflags.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
Kbuild
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
kdebug.h
sh: Wire up oops reporting in the die notifier chain.
2008-10-21 18:33:36 +09:00
kexec.h
kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE
2008-08-15 08:35:42 -07:00
kgdb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
kmap_types.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
kprobes.h
sh: kprobes: Use trapa #0x3a for breakpoint trap.
2008-09-08 18:10:10 +09:00
linkage.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
local.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
machvec.h
sh: More I/O routine overhauling.
2008-10-04 05:25:52 +09:00
mc146818rtc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mman.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmu_context_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmu_context_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmu_context.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmu.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mmzone.h
sh: Fix up NUMA build error with se7722_defconfig.
2008-09-12 22:41:30 +09:00
module.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
msgbuf.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
mutex.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
page.h
sh: ioremap_prot support.
2008-09-12 20:41:05 +09:00
param.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
parport.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
pci.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
percpu.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
pgalloc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
pgtable_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
pgtable_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
pgtable.h
sh: Handle fixmap TLB eviction more coherently.
2008-11-10 20:00:45 +09:00
pm.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
poll.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
posix_types_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
posix_types_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
posix_types.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
processor_32.h
sh: Consolidate struct sh_cpuinfo definitions across _32/_64 split.
2008-09-17 23:24:02 +09:00
processor_64.h
sh: Consolidate struct sh_cpuinfo definitions across _32/_64 split.
2008-09-17 23:24:02 +09:00
processor.h
sh: Consolidate struct sh_cpuinfo definitions across _32/_64 split.
2008-09-17 23:24:02 +09:00
ptrace.h
sh: Add DSP registers to regset interface.
2008-09-12 22:42:10 +09:00
push-switch.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
resource.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
rtc.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
rwsem.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
scatterlist.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
seccomp.h
sh: seccomp support.
2008-08-02 04:39:32 +09:00
sections.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
segment.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sembuf.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
serial.h
sh: Kill off long-dead HD64465 cchip support.
2008-10-28 20:07:44 +09:00
setup.h
sh: Fix up headers_check regression.
2008-09-17 23:24:59 +09:00
sfp-machine.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sh7760fb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sh_bios.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sh_eth.h
[netdrvr] sh_eth: Add SH7619 support
2008-08-07 02:20:57 -04:00
sh_keysc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
shmbuf.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
shmparam.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sigcontext.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
siginfo.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
signal.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sizes.h
sh: Add a few more definitions to asm/sizes.h.
2008-09-21 10:31:57 +09:00
smc37c93x.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
smp.h
sh: generic clockevent broadcast support.
2008-09-08 10:35:03 +09:00
socket.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sockios.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
sparsemem.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
spi.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
spinlock_types.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
spinlock.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
stat.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
statfs.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
string_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
string_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
string.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
syscall_32.h
sh: Provide the asm/syscall.h interface, needed by tracehook.
2008-09-12 22:13:13 +09:00
syscall_64.h
sh: Provide the asm/syscall.h interface, needed by tracehook.
2008-09-12 22:13:13 +09:00
syscall.h
sh: Provide the asm/syscall.h interface, needed by tracehook.
2008-09-12 22:13:13 +09:00
syscalls_32.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
syscalls_64.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
syscalls.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
system_32.h
sh: Move lookup_exception_vector() out to asm/system_32.h.
2008-09-21 12:00:23 +09:00
system_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
system.h
sh: fixup many sparse errors.
2008-09-08 10:35:04 +09:00
termbits.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
termios.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
thread_info.h
sh: Support kernel stacks smaller than a page.
2008-09-20 20:21:33 +09:00
timer.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
timex.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
tlb_64.h
sh: Fix up broken kerneldoc comments.
2008-08-04 12:51:06 +09:00
tlb.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
tlbflush.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
topology.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
types.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
uaccess_32.h
sh: Proper __put_user_asm() size mismatch fix.
2008-07-29 09:16:33 +09:00
uaccess_64.h
sh: sh_ksyms_64 needs __strncpy_from_user() definition.
2008-09-29 19:45:16 +09:00
uaccess.h
sh: Proper __put_user_asm() size mismatch fix.
2008-07-29 09:16:33 +09:00
ubc.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
ucontext.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
unaligned.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
unistd_32.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
unistd_64.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
unistd.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
user.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
vga.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
watchdog.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00
xor.h
sh: migrate to arch/sh/include/
2008-07-29 08:09:44 +09:00