x86/pkru: Provide pkru_write_default()

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Provide a simple and trivial helper which just writes the PKRU default
value without trying to fiddle with the task's xsave buffer.

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/20210623121455.513729794@linutronix.de

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Thomas Gleixner 2021-06-23 14:02:09 +02:00 • committed by Borislav Petkov

parent 739e2eec0f

commit ff7ebff47c

1 changed files with 8 additions and 0 deletions

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arch/x86/include/asm/pkru.h

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