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| author | Mihai Caraman <mihai.caraman@freescale.com> | 2012-09-06 04:49:44 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-07 01:48:49 +0200 |
| commit | 0127262c01f0beb485f917c720d1d95d165dfdbf (patch) | |
| tree | 8ea17c81f09dec7c6e8bfdc8f3288ec7cfa439c6 /arch/powerpc/kernel/exceptions-64e.S | |
| parent | powerpc/booke64: Use SPRG0/3 scratch for bolted TLB miss & crit int (diff) | |
| download | linux-0127262c01f0beb485f917c720d1d95d165dfdbf.tar.xz linux-0127262c01f0beb485f917c720d1d95d165dfdbf.zip | |
powerpc: Restore VDSO information on critical exception om BookE
Critical exception on 64-bit booke uses user-visible SPRG3 as scratch.
Restore VDSO information in SPRG3 on exception prolog.
Use a common sprg3 field in PACA for all powerpc64 architectures.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/exceptions-64e.S')
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 7476b0ae09fb..87a82fbdf05a 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -110,7 +110,9 @@ #define PROLOG_STORE_RESTORE_SCRATCH_CRIT \ mfspr r10,SPRN_SPRG_CRIT_SCRATCH; /* get r13 */ \ - std r10,PACA_EXCRIT+EX_R13(r13) + std r10,PACA_EXCRIT+EX_R13(r13); \ + ld r11,PACA_SPRG3(r13); \ + mtspr SPRN_SPRG_CRIT_SCRATCH,r11; /* Variants of the "addition" argument for the prolog */ |