Migrate this function to pure 'struct fpu' usage.
Reviewed-by: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
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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