x86/fpu: Add size and mask information to fpstate

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Add state size and feature mask information to the fpstate container. This
will be used for runtime checks with the upcoming support for dynamically
enabled features and dynamically sized buffers. That avoids conditionals
all over the place as the required information is accessible for both
default and extended buffers.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211013145322.921388806@linutronix.de

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Thomas Gleixner 2021-10-13 16:55:46 +02:00 • committed by Borislav Petkov

parent 2dd8eedc80

commit 248452ce21

4 changed files with 30 additions and 0 deletions

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12

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

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6

arch/x86/kernel/fpu/core.c

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9

arch/x86/kernel/fpu/init.c

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3

arch/x86/kernel/fpu/xstate.c

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