kernel-fxtec-pro1x/arch
Paul Mackerras 1977b50212 powerpc: Save register r9-r13 values accurately on interrupt with bad stack
When we take an interrupt or exception from kernel mode and the stack
pointer is obviously not a kernel address (i.e. the top bit is 0), we
switch to an emergency stack, save register values and panic.  However,
on 64-bit server machines, we don't actually save the values of r9 - r13
at the time of the interrupt, but rather values corrupted by the
exception entry code for r12-r13, and nothing at all for r9-r11.

This fixes it by passing a pointer to the register save area in the paca
through to the bad_stack code in r3.  The register values are saved in
one of the paca register save areas (depending on which exception this
is).  Using the pointer in r3, the bad_stack code now retrieves the
saved values of r9 - r13 and stores them in the exception frame on the
emergency stack.  This also stores the normal exception frame marker
("regshere") in the exception frame.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-05-04 15:19:27 +10:00
..
alpha alpha: Fix uninitialized value in read_persistent_clock. 2011-04-17 14:41:30 -07:00
arm Merge branch 'for-39-rc4' of git://codeaurora.org/quic/kernel/davidb/linux-msm 2011-04-18 15:44:29 -07:00
avr32 avr32: add ATAG_BOARDINFO 2011-04-13 15:46:59 +02:00
blackfin Blackfin: SMP: fix cache flush loop 2011-04-13 19:34:06 -04:00
cris Fix common misspellings 2011-03-31 11:26:23 -03:00
frv Fix common misspellings 2011-03-31 11:26:23 -03:00
h8300 genirq: Remove the now obsolete config options and select statements 2011-03-30 14:13:23 +02:00
ia64 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
m32r Fix common misspellings 2011-03-31 11:26:23 -03:00
m68k m68k,m68knommu: Wire up name_to_handle_at, open_by_handle_at, clock_adjtime, syncfs 2011-04-12 19:02:03 -07:00
microblaze usb: Fix Kconfig unmet dependencies for Microblaze EHCI 2011-04-13 15:43:59 -07:00
mips Fix common misspellings 2011-03-31 11:26:23 -03:00
mn10300 Fix common misspellings 2011-03-31 11:26:23 -03:00
parisc Fix common misspellings 2011-03-31 11:26:23 -03:00
powerpc powerpc: Save register r9-r13 values accurately on interrupt with bad stack 2011-05-04 15:19:27 +10:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2011-04-08 07:36:14 -07:00
score Fix common misspellings 2011-03-31 11:26:23 -03:00
sh Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6 2011-04-07 12:49:17 -07:00
sparc Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
tile Fix common misspellings 2011-03-31 11:26:23 -03:00
um um: disable CONFIG_CMPXCHG_LOCAL 2011-04-14 16:06:56 -07:00
unicore32 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
x86 Merge branches 'core-fixes-for-linus', 'perf-fixes-for-linus', 'sched-fixes-for-linus', 'timer-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-04-16 09:45:08 -07:00
xtensa Fix common misspellings 2011-03-31 11:26:23 -03:00
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