Commit 4af94d5d authored Jul 11, 2014 by Paul Burton Committed by Ralf Baechle Aug 02, 2014

MIPS: mark MSA experimental



In light of the commit 16f77de8 (Revert "MIPS: Save/restore MSA
context around signals") the MSA support in the kernel is incomplete.
Until the replacement for the former sigcontext changes is agreed upon
and in tree, mark MSA experimental & disable it by default.

MSA is only implemented by one CPU supported by the kernel, the P5600.
The P5600 is a 32 bit core, and thus MSA can only be used when the
experimental CONFIG_MIPS_O32_FP64_SUPPORT option is enabled. Therefore
MSA is only being used in experimental settings anyway and this change
doesn't actually make any difference beyond clarifying the state of
MSA support.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7311/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 2a6cb669

arch/mips/Kconfig

+1 −2

Original line number	Diff line number	Diff line
		@@ -2115,10 +2115,9 @@ config CPU_MICROMIPS
		microMIPS ISA

		config CPU_HAS_MSA
		bool "Support for the MIPS SIMD Architecture"
		bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
		depends on CPU_SUPPORTS_MSA
		depends on 64BIT \|\| MIPS_O32_FP64_SUPPORT
		default y
		help
		MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
		and a set of SIMD instructions to operate on them. When this option

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