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authorIngo Molnar <mingo@kernel.org>2015-04-03 12:02:02 +0200
committerIngo Molnar <mingo@kernel.org>2015-05-19 15:47:10 +0200
commit97185c95f7ab7f752473c34672dab0925758094b (patch)
tree287e1d57d678656ada4da43572d1defef7d3ae7e /arch/x86/math-emu
parent68ad8b9feae583cc5102ec86ad410fce542a5311 (diff)
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x86/fpu: Split an fpstate_alloc_init() function out of init_fpu()
Most init_fpu() users don't want the register-saving aspect of the function, they are calling it for 'current' and when FPU registers are not allocated and initialized yet. Split out a simplified API that does just that (and add debug-checks for these conditions): fpstate_alloc_init(). Use it where appropriate. Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/math-emu')
-rw-r--r--arch/x86/math-emu/fpu_entry.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c
index 9b868124128d..c9ff09a02385 100644
--- a/arch/x86/math-emu/fpu_entry.c
+++ b/arch/x86/math-emu/fpu_entry.c
@@ -149,7 +149,7 @@ void math_emulate(struct math_emu_info *info)
struct desc_struct code_descriptor;
if (!used_math()) {
- if (init_fpu(current)) {
+ if (fpstate_alloc_init(current)) {
do_group_exit(SIGKILL);
return;
}