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/openbmc/linux/arch/x86/include/asm/fpu/
H A Dxstate.hdiff 23686ef25d4ae81bc12fe3994d1905191fcf71f8 Thu Oct 21 17:55:11 CDT 2021 Thomas Gleixner <tglx@linutronix.de> x86/fpu: Add basic helpers for dynamically enabled features

To allow building up the infrastructure required to support dynamically
enabled FPU features, add:

- XFEATURES_MASK_DYNAMIC

This constant will hold xfeatures which can be dynamically enabled.

- fpu_state_size_dynamic()

A static branch for 64-bit and a simple 'return false' for 32-bit.

This helper allows to add dynamic-feature-specific changes to common
code which is shared between 32-bit and 64-bit without #ifdeffery.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211021225527.10184-8-chang.seok.bae@intel.com
/openbmc/linux/arch/x86/kernel/fpu/
H A Dcore.cdiff 23686ef25d4ae81bc12fe3994d1905191fcf71f8 Thu Oct 21 17:55:11 CDT 2021 Thomas Gleixner <tglx@linutronix.de> x86/fpu: Add basic helpers for dynamically enabled features

To allow building up the infrastructure required to support dynamically
enabled FPU features, add:

- XFEATURES_MASK_DYNAMIC

This constant will hold xfeatures which can be dynamically enabled.

- fpu_state_size_dynamic()

A static branch for 64-bit and a simple 'return false' for 32-bit.

This helper allows to add dynamic-feature-specific changes to common
code which is shared between 32-bit and 64-bit without #ifdeffery.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211021225527.10184-8-chang.seok.bae@intel.com