diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-04-22 16:08:34 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 16:47:18 +0300 |
| commit | 3e261c14e41b3a3cc1da54190d56b8609bedd873 (patch) | |
| tree | 18dec7cbabffcd94616bb47f5af4ef1afe999056 /arch | |
| parent | 4d1640927bd54aa118f91c2bcfe6c2de0e2ba2a3 (diff) | |
| download | linux-3e261c14e41b3a3cc1da54190d56b8609bedd873.tar.xz | |
x86/fpu: Simplify the xsave_state*() methods
These functions (xsave_state() and xsave_state_booting()) have a 'mask'
argument that is always -1.
Propagate this into the functions instead and eliminate the extra argument.
Does not change the generated code, because these were inlined functions.
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')
| -rw-r--r-- | arch/x86/include/asm/fpu-internal.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/xsave.h | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/fpu/xsave.c | 3 |
3 files changed, 9 insertions, 6 deletions
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h index c3b7bd12f18f..b1f5dd63cfeb 100644 --- a/arch/x86/include/asm/fpu-internal.h +++ b/arch/x86/include/asm/fpu-internal.h @@ -527,9 +527,9 @@ static inline void __save_fpu(struct task_struct *tsk) { if (use_xsave()) { if (unlikely(system_state == SYSTEM_BOOTING)) - xsave_state_booting(&tsk->thread.fpu.state->xsave, -1); + xsave_state_booting(&tsk->thread.fpu.state->xsave); else - xsave_state(&tsk->thread.fpu.state->xsave, -1); + xsave_state(&tsk->thread.fpu.state->xsave); } else fpu_fxsave(&tsk->thread.fpu); } diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index 58ed0ca5a11e..61c951ce77fe 100644 --- a/arch/x86/include/asm/xsave.h +++ b/arch/x86/include/asm/xsave.h @@ -70,8 +70,9 @@ extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask); * This function is called only during boot time when x86 caps are not set * up and alternative can not be used yet. */ -static inline int xsave_state_booting(struct xsave_struct *fx, u64 mask) +static inline int xsave_state_booting(struct xsave_struct *fx) { + u64 mask = -1; u32 lmask = mask; u32 hmask = mask >> 32; int err = 0; @@ -123,8 +124,9 @@ static inline int xrstor_state_booting(struct xsave_struct *fx, u64 mask) /* * Save processor xstate to xsave area. */ -static inline int xsave_state(struct xsave_struct *fx, u64 mask) +static inline int xsave_state(struct xsave_struct *fx) { + u64 mask = -1; u32 lmask = mask; u32 hmask = mask >> 32; int err = 0; @@ -189,7 +191,7 @@ static inline int xrstor_state(struct xsave_struct *fx, u64 mask) */ static inline void fpu_xsave(struct fpu *fpu) { - xsave_state(&fpu->state->xsave, -1); + xsave_state(&fpu->state->xsave); } /* diff --git a/arch/x86/kernel/fpu/xsave.c b/arch/x86/kernel/fpu/xsave.c index d913d5024901..a52205b87acb 100644 --- a/arch/x86/kernel/fpu/xsave.c +++ b/arch/x86/kernel/fpu/xsave.c @@ -558,11 +558,12 @@ static void __init setup_init_fpu_buf(void) * Init all the features state with header_bv being 0x0 */ xrstor_state_booting(init_xstate_buf, -1); + /* * Dump the init state again. This is to identify the init state * of any feature which is not represented by all zero's. */ - xsave_state_booting(init_xstate_buf, -1); + xsave_state_booting(init_xstate_buf); } static enum { AUTO, ENABLE, DISABLE } eagerfpu = AUTO; |