Thomas Gleixner eb6f51723f x86/fpu: Make copy_xstate_to_kernel() usable for [x]fpregs_get() ... When xsave with init state optimization is used then a component's state in the task's xsave buffer can be stale when the corresponding feature bit is not set. fpregs_get() and xfpregs_get() invoke fpstate_sanitize_xstate() to update the task's xsave buffer before retrieving the FX or FP state. That's just duplicated code as copy_xstate_to_kernel() already handles this correctly. Add a copy mode argument to the function which allows to restrict the state copy to the FP and SSE features. Also rename the function to copy_xstate_to_uabi_buf() so the name reflects what it is doing. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20210623121452.805327286@linutronix.de		2021-06-23 17:49:47 +02:00
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api.h	x86/cpufeatures: Force disable X86_FEATURE_ENQCMD and remove update_pasid()	2021-06-03 16:33:09 +02:00
internal.h	x86/fpu: Move inlines where they belong	2021-06-23 17:49:46 +02:00
regset.h	x86: switch to ->regset_get()	2020-07-27 14:31:07 -04:00
signal.h	x86/signal: Introduce helpers to get the maximum signal frame size	2021-05-19 11:46:27 +02:00
types.h	x86/fpu/xstate: Add supervisor PASID state for ENQCMD	2020-09-17 20:22:10 +02:00
xcr.h	x86/fpu: Move xgetbv()/xsetbv() into a separate header	2020-09-07 19:54:20 +02:00
xstate.h	x86/fpu: Make copy_xstate_to_kernel() usable for [x]fpregs_get()	2021-06-23 17:49:47 +02:00