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x86/cpufeature: Replace cpu_has_fxsr with boot_cpu_has() usage

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Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459801503-15600-9-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Borislav Petkov
2016-04-04 22:25:01 +02:00
committed by Ingo Molnar
parent 93984fbd4e
commit 01f8fd7379
4 changed files with 14 additions and 12 deletions
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13
arch/x86/kernel/fpu/regset.c
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@@ -21,7 +21,10 @@ int regset_xregset_fpregs_active(struct task_struct *target, const struct user_r
{
struct fpu *target_fpu = &target->thread.fpu;
return (cpu_has_fxsr && target_fpu->fpstate_active) ? regset->n : 0;
if (boot_cpu_has(X86_FEATURE_FXSR) && target_fpu->fpstate_active)
return regset->n;
else
return 0;
}
int xfpregs_get(struct task_struct *target, const struct user_regset *regset,
@@ -30,7 +33,7 @@ int xfpregs_get(struct task_struct *target, const struct user_regset *regset,
{
struct fpu *fpu = &target->thread.fpu;
if (!cpu_has_fxsr)
if (!boot_cpu_has(X86_FEATURE_FXSR))
return -ENODEV;
fpu__activate_fpstate_read(fpu);
@@ -47,7 +50,7 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset,
struct fpu *fpu = &target->thread.fpu;
int ret;
if (!cpu_has_fxsr)
if (!boot_cpu_has(X86_FEATURE_FXSR))
return -ENODEV;
fpu__activate_fpstate_write(fpu);
@@ -278,7 +281,7 @@ int fpregs_get(struct task_struct *target, const struct user_regset *regset,
if (!static_cpu_has(X86_FEATURE_FPU))
return fpregs_soft_get(target, regset, pos, count, kbuf, ubuf);
if (!cpu_has_fxsr)
if (!boot_cpu_has(X86_FEATURE_FXSR))
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&fpu->state.fsave, 0,
-1);
@@ -309,7 +312,7 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset,
if (!static_cpu_has(X86_FEATURE_FPU))
return fpregs_soft_set(target, regset, pos, count, kbuf, ubuf);
if (!cpu_has_fxsr)
if (!boot_cpu_has(X86_FEATURE_FXSR))
return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&fpu->state.fsave, 0,
-1);