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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-12 16:46:47 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-06-12 16:51:41 +1000 |
| commit | 37f9ef553bed630957e025504cdcbc76f5de49d5 (patch) | |
| tree | 4e58497fe49c04de4217af5e601bef92706aebca /arch | |
| parent | 10f52dd9febf0302bc458a6ea7979767dfa9f3b6 (diff) | |
| download | linux-37f9ef553bed630957e025504cdcbc76f5de49d5.tar.gz linux-37f9ef553bed630957e025504cdcbc76f5de49d5.tar.bz2 linux-37f9ef553bed630957e025504cdcbc76f5de49d5.zip | |
powerpc: Fix bug in move of altivec code to vector.S
The patch that moved to vector.S and made common between 32 and 64-bit the
altivec code had a nasty bug on 32-bit (did I really test that ?) which
causes the kernel to blr back into userspace ... oops :-)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 6437f905c566..48469463f89e 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -733,9 +733,11 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_NEED_DTLB_SW_LRU) AltiVecUnavailable: EXCEPTION_PROLOG #ifdef CONFIG_ALTIVEC - bne load_up_altivec /* if from user, just load it up */ + beq 1f + bl load_up_altivec /* if from user, just load it up */ + b fast_exception_return #endif /* CONFIG_ALTIVEC */ - addi r3,r1,STACK_FRAME_OVERHEAD +1: addi r3,r1,STACK_FRAME_OVERHEAD EXC_XFER_EE_LITE(0xf20, altivec_unavailable_exception) PerformanceMonitor: |