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>
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index 7bea0f3..631aa10 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -390,6 +390,7 @@
#define MIPS_CPU_FTLB 0x20000000000ull /* CPU has Fixed-page-size TLB */
#define MIPS_CPU_NAN_LEGACY 0x40000000000ull /* Legacy NaN implemented */
#define MIPS_CPU_NAN_2008 0x80000000000ull /* 2008 NaN implemented */
+#define MIPS_CPU_VP 0x100000000000ull /* MIPSr6 Virtual Processors (multi-threading) */
/*
* CPU ASE encodings