diff options
| author | Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | 2014-03-11 10:56:18 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-03-24 10:16:09 +1100 |
| commit | d410ae2126481a74bc5be4a6242c4a232c19a984 (patch) | |
| tree | 87e14bf51dfa65e3eac3f53528fb6036b0f46de6 /arch/powerpc/include | |
| parent | 422b9b9684db3c511e65c91842275c43f5910ae9 (diff) | |
powerpc/book3s: Fix CFAR clobbering issue in machine check handler.
While checking powersaving mode in machine check handler at 0x200, we
clobber CFAR register. Fix it by saving and restoring it during beq/bgt.
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 66830618cc19..aeaa56cd9b54 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -147,6 +147,14 @@ BEGIN_FTR_SECTION_NESTED(943) \ END_FTR_SECTION_NESTED(ftr,ftr,943) /* + * Set an SPR from a register if the CPU has the given feature + */ +#define OPT_SET_SPR(ra, spr, ftr) \ +BEGIN_FTR_SECTION_NESTED(943) \ + mtspr spr,ra; \ +END_FTR_SECTION_NESTED(ftr,ftr,943) + +/* * Save a register to the PACA if the CPU has the given feature */ #define OPT_SAVE_REG_TO_PACA(offset, ra, ftr) \ |