| From | Ingo Molnar <> | Subject | [PATCH 065/208] x86/fpu: Use 'struct fpu' in fpu_copy() | Date | Tue, 5 May 2015 18:24:45 +0200 |
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Migrate this function to pure 'struct fpu' usage.
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: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/fpu/core.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 92cee0c18dc6..cfc2af98bcde 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -227,15 +227,12 @@ EXPORT_SYMBOL_GPL(fpstate_free); * In the 'lazy' case we save to the source context, mark the FPU lazy * via stts() and copy the source context into the destination context. */ -static void fpu_copy(struct task_struct *dst, struct task_struct *src) +static void fpu_copy(struct fpu *dst_fpu, struct fpu *src_fpu) { - struct fpu *dst_fpu = &dst->thread.fpu; - struct fpu *src_fpu = &src->thread.fpu; - - WARN_ON(src != current); + WARN_ON(src_fpu != ¤t->thread.fpu); if (use_eager_fpu()) { - memset(&dst->thread.fpu.state->xsave, 0, xstate_size); + memset(&dst_fpu->state->xsave, 0, xstate_size); __save_fpu(dst_fpu); } else { fpu__save(src_fpu); @@ -258,7 +255,7 @@ int fpu__copy(struct task_struct *dst, struct task_struct *src) if (err) return err; - fpu_copy(dst, src); + fpu_copy(dst_fpu, src_fpu); } return 0; } -- 2.1.0
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