linux-kernel - [PATCH 5.12 156/242] MIPS: MT extensions are not available on MIPS32r1

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Message-Id: <20210715182620.641269257@linuxfoundation.org>
Date:   Thu, 15 Jul 2021 20:38:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Paul Cercueil <paul@...pouillou.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: [PATCH 5.12 156/242] MIPS: MT extensions are not available on MIPS32r1

From: Paul Cercueil <paul@...pouillou.net>

commit cad065ed8d8831df67b9754cc4437ed55d8b48c0 upstream.

MIPS MT extensions were added with the MIPS 34K processor, which was
based on the MIPS32r2 ISA.

This fixes a build error when building a generic kernel for a MIPS32r1
CPU.

Fixes: c434b9f80b09 ("MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbol")
Cc: stable@...r.kernel.org # v5.9
Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/mips/include/asm/cpu-features.h |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -64,6 +64,8 @@
 	((MIPS_ISA_REV >= (ge)) && (MIPS_ISA_REV < (lt)))
 #define __isa_range_or_flag(ge, lt, flag) \
 	(__isa_range(ge, lt) || ((MIPS_ISA_REV < (lt)) && __isa(flag)))
+#define __isa_range_and_ase(ge, lt, ase) \
+	(__isa_range(ge, lt) && __ase(ase))
 
 /*
  * SMP assumption: Options of CPU 0 are a superset of all processors.
@@ -421,7 +423,7 @@
 #endif
 
 #ifndef cpu_has_mipsmt
-#define cpu_has_mipsmt		__isa_lt_and_ase(6, MIPS_ASE_MIPSMT)
+#define cpu_has_mipsmt		__isa_range_and_ase(2, 6, MIPS_ASE_MIPSMT)
 #endif
 
 #ifndef cpu_has_vp