x86/fpu: Rename fxregs-related copy functions

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The function names for fxsave/fxrstor operations are horribly named and
a permanent source of confusion.

Rename:
	copy_fxregs_to_kernel() to fxsave()
	copy_kernel_to_fxregs() to fxrstor()
	copy_fxregs_to_user() to fxsave_to_user_sigframe()
	copy_user_to_fxregs() to fxrstor_from_user_sigframe()

so it's clear what these are doing. All these functions are really low
level wrappers around the equally named instructions, so mapping to the
documentation is just natural.

While at it, replace the static_cpu_has(X86_FEATURE_FXSR) with
use_fxsr() to be consistent with the rest of the code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121454.017863494@linutronix.de

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This commit is contained in:

Thomas Gleixner 2021-06-23 14:01:54 +02:00 • committed by Borislav Petkov

parent 6b862ba182

commit 16dcf43859

3 changed files with 13 additions and 21 deletions

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18

arch/x86/include/asm/fpu/internal.h

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6

arch/x86/kernel/fpu/core.c

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10

arch/x86/kernel/fpu/signal.c

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