Commit 38ee3c5e authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

arm64/sve: Add some comments for sve_save/load_state() 



The use of macros for the actual function bodies means legibility is always
going to be a bit of a challenge, especially while we can't rely on SVE
support in the toolchain, but this helps a little.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210812201143.35578-1-broonie@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 090bf6f8

arch/arm64/kernel/entry-fpsimd.S

+13 −0
Original line number Diff line number Diff line
@@ -33,11 +33,24 @@ SYM_FUNC_END(fpsimd_load_state) 


#ifdef CONFIG_ARM64_SVE



/*

 * Save the SVE state

 *

 * x0 - pointer to buffer for state

 * x1 - pointer to storage for FPSR

 */

SYM_FUNC_START(sve_save_state)

	sve_save 0, x1, 2

	ret

SYM_FUNC_END(sve_save_state)



/*

 * Load the SVE state

 *

 * x0 - pointer to buffer for state

 * x1 - pointer to storage for FPSR

 * x2 - VQ-1

 */

SYM_FUNC_START(sve_load_state)

	sve_load 0, x1, x2, 3, x4

	ret