diff options
| author | Michael Neuling <mikey@neuling.org> | 2008-07-11 16:29:12 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-15 12:29:23 +1000 |
| commit | 7c29217096d83f657e6ee70479af09b46f4275f6 (patch) | |
| tree | 96fd96226d2998b1f56d7fb8110e27c489dbba89 /arch/powerpc/kernel/process.c | |
| parent | 01f4b8b8b8db09b88be7df7e51192e4e678b69d3 (diff) | |
powerpc: fix giveup_vsx to save registers correctly
giveup_vsx didn't save the FPU and VMX regsiters. Change it to be
like giveup_fpr/altivec which save these registers.
Also update call sites where FPU and VMX are already saved to use the
original giveup_vsx (renamed to __giveup_vsx).
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 0a4eb0811590..219f3634115e 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -159,6 +159,13 @@ void enable_kernel_vsx(void) EXPORT_SYMBOL(enable_kernel_vsx); #endif +void giveup_vsx(struct task_struct *tsk) +{ + giveup_fpu(tsk); + giveup_altivec(tsk); + __giveup_vsx(tsk); +} + void flush_vsx_to_thread(struct task_struct *tsk) { if (tsk->thread.regs) { @@ -290,7 +297,8 @@ struct task_struct *__switch_to(struct task_struct *prev, #endif /* CONFIG_ALTIVEC */ #ifdef CONFIG_VSX if (prev->thread.regs && (prev->thread.regs->msr & MSR_VSX)) - giveup_vsx(prev); + /* VMX and FPU registers are already save here */ + __giveup_vsx(prev); #endif /* CONFIG_VSX */ #ifdef CONFIG_SPE /* |