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linux-sg2042/arch/parisc/kernel
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John David Anglin e8d8fc219f parisc: Ensure volatile space register %sr1 is not clobbered 
I still see the occasional random segv on rp3440.  Looking at one of
these (a code 15), it appeared the problem must be with the cache
handling of anonymous pages.  Reviewing this, I noticed that the space
register %sr1 might be being clobbered when we flush an anonymous page.

Register %sr1 is used for TLB purges in a couple of places.  These
purges are needed on PA8800 and PA8900 processors to ensure cache
consistency of flushed cache lines.

The solution here is simply to move the %sr1 load into the TLB lock
region needed to ensure that one purge executes at a time on SMP
systems.  This was already the case for one use.  After a few days of
operation, I haven't had a random segv on my rp3440.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org> # 3.10
Signed-off-by: Helge Deller <deller@gmx.de>
 		2013-07-09 22:09:22 +02:00
..
.gitignore parisc: add arch/parisc/kernel/.gitignore 2008-10-10 16:32:28 +00:00
Makefile parisc: Fix init_task fallout 2012-05-07 11:38:46 +02:00
asm-offsets.c parisc: Use of align_frame provides stack frame. 2010-05-30 05:38:27 -04:00
binfmt_elf32.c parisc: fix redefinition of SET_PERSONALITY 2013-03-02 20:15:28 +01:00
cache.c parisc: Ensure volatile space register %sr1 is not clobbered 2013-07-09 22:09:22 +02:00
drivers.c parisc: memory overflow, 'name' length is too short for using 2013-06-01 14:27:56 +02:00
entry.S parisc: make interrupt and interruption stack allocation reentrant 2013-05-24 22:35:36 +02:00
firmware.c Disintegrate asm/system.h for PA-RISC 2012-03-28 18:30:02 +01:00
ftrace.c sched_clock: Add local_clock() API and improve documentation 2010-06-09 10:34:49 +02:00
hardware.c parisc: fix serial ports on C8000 workstation 2013-06-18 20:29:07 +02:00
head.S [PARISC] only make executable areas executable 2011-04-15 12:55:18 -05:00
hpmc.S parisc: fix partly 16/64k PAGE_SIZE boot 2013-05-06 23:08:32 +02:00
inventory.c parisc: fix possible memory leak in pat_query_module() 2013-02-20 22:47:11 +01:00
irq.c parisc: fix irq stack on UP and SMP 2013-05-24 23:29:01 +02:00
module.c modules: don't hand 0 to vmalloc. 2012-12-14 13:06:43 +10:30
pa7300lc.c
…
pacache.S parisc: Use unshadowed index register for flush instructions in flush_dcache_page_asm and flush_icache_page_asm 2013-06-18 20:29:10 +02:00
parisc_ksyms.c parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds. 2013-04-25 22:36:15 +02:00
pci-dma.c parisc: Add export.h to files needing EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:00 -04:00
pci.c parisc: provide pci_mmap_page_range() for parisc 2013-06-18 20:29:08 +02:00
pdc_chassis.c parisc: single_open() leaks 2013-05-05 00:10:41 -04:00
pdc_cons.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
perf.c parisc: remove big kernel lock 2010-10-16 22:43:08 +02:00
perf_asm.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
perf_images.h
…
process.c parisc: Use generic idle loop 2013-04-08 17:39:27 +02:00
processor.c parisc: more capabilities info in /proc/cpuinfo 2013-07-09 22:09:17 +02:00
ptrace.c parisc: improve ptrace support for gdb single-step 2013-01-07 23:06:27 +01:00
real2.S parisc: move pdc_result to real2.S 2008-10-10 16:32:28 +00:00
setup.c Merge 3.10-rc5 into tty-next 2013-06-08 21:23:33 -07:00
signal.c parisc: remove unused variable 'compat_val' 2013-03-02 19:56:18 +01:00
signal32.c parisc: fix error return codes for rt_sigaction and rt_sigprocmask 2013-02-20 22:57:02 +01:00
signal32.h parisc: switch to generic compat rt_sigaction() 2013-02-03 18:16:07 -05:00
smp.c parisc: tlb flush counting fix for SMP and UP 2013-05-07 23:44:04 +02:00
stacktrace.c parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT 2009-03-31 02:51:34 +00:00
sys32.h parisc: switch to generic compat rt_sigaction() 2013-02-03 18:16:07 -05:00
sys_parisc.c mm: use vm_unmapped_area() on parisc architecture 2013-02-27 19:10:09 -08:00
sys_parisc32.c unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
syscall.S parisc: document the parisc gateway page 2013-05-06 23:09:10 +02:00
syscall_table.S get rid of union semop in sys_semctl(2) arguments 2013-03-05 15:14:16 -05:00
time.c parisc: move definition of PAGE0 to asm/page.h 2012-05-10 15:12:08 -07:00
topology.c parisc: Replace NR_CPUS in parisc code 2009-01-05 19:09:02 +00:00
traps.c parisc: show number of FPE and unaligned access handler calls in /proc/interrupts 2013-05-24 22:35:26 +02:00
unaligned.c parisc: show number of FPE and unaligned access handler calls in /proc/interrupts 2013-05-24 22:35:26 +02:00
unwind.c parisc: unwind - optimise linked-list searches for modules 2010-10-21 21:12:19 -04:00
vmlinux.lds.S parisc: add kernel stack overflow check 2013-05-07 21:34:07 +02:00