Commit a1f4ccd2 authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

arm64/sme: Provide Kconfig for SME 



Now that basline support for the Scalable Matrix Extension (SME) is present
introduce the Kconfig option allowing it to be built. While the feature
registers don't impose a strong requirement for a system with SME to
support SVE at runtime the support for streaming mode SVE is mostly
shared with normal SVE so depend on SVE.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220419112247.711548-28-broonie@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 861262ab

arch/arm64/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -1939,6 +1939,17 @@ config ARM64_SVE 
	  booting the kernel.  If unsure and you are not observing these

	  symptoms, you should assume that it is safe to say Y.



config ARM64_SME

	bool "ARM Scalable Matrix Extension support"

	default y

	depends on ARM64_SVE

	help

	  The Scalable Matrix Extension (SME) is an extension to the AArch64

	  execution state which utilises a substantial subset of the SVE

	  instruction set, together with the addition of new architectural

	  register state capable of holding two dimensional matrix tiles to

	  enable various matrix operations.



config ARM64_MODULE_PLTS

	bool "Use PLTs to allow module memory to spill over into vmalloc area"

	depends on MODULES