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| author | Paul Burton <paul.burton@imgtec.com> | 2014-07-11 17:47:25 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-08-02 00:06:45 +0200 |
| commit | 4af94d5d09bace4f351d7ce5f5e18da07777eb63 (patch) | |
| tree | fef2b76a924cb0f039a39184ce993887252366ff /arch/mips | |
| parent | MIPS: Don't build MSA support unless it can be used (diff) | |
| download | linux-4af94d5d09bace4f351d7ce5f5e18da07777eb63.tar.xz linux-4af94d5d09bace4f351d7ce5f5e18da07777eb63.zip | |
MIPS: mark MSA experimental
In light of the commit 16f77de82f2d (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>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index a159a8f70c8d..0d3f935d321a 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -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 |