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x86/fpu: Use 'struct fpu' in __fpu_save()
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: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -125,15 +125,15 @@ void __kernel_fpu_end(void)
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}
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EXPORT_SYMBOL(__kernel_fpu_end);
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static void __save_fpu(struct task_struct *tsk)
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static void __save_fpu(struct fpu *fpu)
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{
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if (use_xsave()) {
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if (unlikely(system_state == SYSTEM_BOOTING))
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xsave_state_booting(&tsk->thread.fpu.state->xsave);
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xsave_state_booting(&fpu->state->xsave);
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else
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xsave_state(&tsk->thread.fpu.state->xsave);
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xsave_state(&fpu->state->xsave);
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} else {
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fpu_fxsave(&tsk->thread.fpu);
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fpu_fxsave(fpu);
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}
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}
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@ -151,7 +151,7 @@ void fpu__save(struct task_struct *tsk)
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preempt_disable();
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if (fpu->has_fpu) {
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if (use_eager_fpu()) {
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__save_fpu(tsk);
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__save_fpu(fpu);
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} else {
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fpu_save_init(fpu);
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__thread_fpu_end(fpu);
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@ -231,17 +231,17 @@ EXPORT_SYMBOL_GPL(fpstate_free);
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*/
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static void fpu_copy(struct task_struct *dst, struct task_struct *src)
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{
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struct fpu *dst_fpu = &dst->thread.fpu;
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struct fpu *src_fpu = &src->thread.fpu;
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WARN_ON(src != current);
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if (use_eager_fpu()) {
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memset(&dst->thread.fpu.state->xsave, 0, xstate_size);
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__save_fpu(dst);
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__save_fpu(dst_fpu);
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} else {
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struct fpu *dfpu = &dst->thread.fpu;
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struct fpu *sfpu = &src->thread.fpu;
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fpu__save(src);
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memcpy(dfpu->state, sfpu->state, xstate_size);
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memcpy(dst_fpu->state, src_fpu->state, xstate_size);
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}
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}
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