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| author | Anton Blanchard <anton@samba.org> | 2015-10-29 11:44:02 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-01 13:52:25 +1100 |
| commit | a7d623d4d053ccb0cdfad210bced2ec25ddf69a2 (patch) | |
| tree | b1bcf400b9c53c66d483bb641f98fb6e2f270bf9 /arch/powerpc/kernel/signal_64.c | |
| parent | 98da581e0846f6d932a4bc46a55458140e20478a (diff) | |
| download | linux-a7d623d4d053ccb0cdfad210bced2ec25ddf69a2.tar.gz linux-a7d623d4d053ccb0cdfad210bced2ec25ddf69a2.tar.bz2 linux-a7d623d4d053ccb0cdfad210bced2ec25ddf69a2.zip | |
powerpc: Move part of giveup_vsx into c
Move the MSR modification into c. Removing it from the assembly
function will allow us to avoid costly MSR writes by batching them
up.
Check the FP and VMX bits before calling the relevant giveup_*()
function. This makes giveup_vsx() and flush_vsx_to_thread() perform
more like their sister functions, and allows us to use
flush_vsx_to_thread() in the signal code.
Move the check_if_tm_restore_required() check in.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 6f2b555516e6..3b2339912911 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -147,7 +147,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * VMX data. */ if (current->thread.used_vsr && ctx_has_vsx_region) { - __giveup_vsx(current); + flush_vsx_to_thread(current); v_regs += ELF_NVRREG; err |= copy_vsx_to_user(v_regs, current); /* set MSR_VSX in the MSR value in the frame to @@ -270,7 +270,7 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc, * VMX data. */ if (current->thread.used_vsr) { - __giveup_vsx(current); + flush_vsx_to_thread(current); v_regs += ELF_NVRREG; tm_v_regs += ELF_NVRREG; |