[patch 17/21] x86/fpu/xstate: Use fpstate for xsave_to_user_sigframe()

Thomas Gleixner
2021-10-13T14:56:45Z

With dynamically enabled features the sigframe code must know the features
which are enabled for the task. Get them from fpstate.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/fpu/xstate.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/fpu/xstate.h
+++ b/arch/x86/kernel/fpu/xstate.h
@@ -149,7 +149,7 @@ static inline int xsave_to_user_sigframe
* internally, e.g. PKRU. That's user space ABI and also required
* to allow the signal handler to modify PKRU.
*/
- u64 mask = xfeatures_mask_uabi();
+ u64 mask = current->thread.fpu.fpstate->user_xfeatures;
u32 lmask = mask;
u32 hmask = mask >> 32;
int err;