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authorPaul Burton <paul.burton@imgtec.com>2016-02-03 03:15:21 +0000
committerRalf Baechle <ralf@linux-mips.org>2016-05-13 14:01:47 +0200
commitf270d881fa552c9c21c37417af2bf95da9a74347 (patch)
tree288743db1dfc7eb10d8a4bf0b590afbf539ca941 /arch/mips/kernel/cpu-probe.c
parent98c1c5078deba1feb9c040eb7708a299e41a8d84 (diff)
MIPS: Detect MIPSr6 Virtual Processor support
MIPSr6 introduces support for "Virtual Processors", which are conceptually similar to VPEs from the now-deprecated MT ASE. Detect whether the system supports VPs using the VP bit in Config5, adding cpu_has_vp for use by later patches. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Maciej W. Rozycki <macro@imgtec.com> Cc: Joshua Kinard <kumba@gentoo.org> Cc: Steven J. Hill <sjhill@realitydiluted.com> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12327/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r--arch/mips/kernel/cpu-probe.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9ad6157e23de..e0cfa3b85bca 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -796,6 +796,8 @@ static inline unsigned int decode_config5(struct cpuinfo_mips *c)
if (config5 & MIPS_CONF5_MVH)
c->options |= MIPS_CPU_XPA;
#endif
+ if (cpu_has_mips_r6 && (config5 & MIPS_CONF5_VP))
+ c->options |= MIPS_CPU_VP;
return config5 & MIPS_CONF_M;
}