* [PATCH] MIPS: set mips32r5 for virt extensions
@ 2021-06-28 21:50 Nick Desaulniers
2021-06-29 8:33 ` Thomas Bogendoerfer
0 siblings, 1 reply; 2+ messages in thread
From: Nick Desaulniers @ 2021-06-28 21:50 UTC (permalink / raw)
To: Thomas Bogendoerfer
Cc: Nick Desaulniers, Dmitry Golovin, Nathan Chancellor, Huacai Chen,
WANG Xuerui, Maciej W. Rozycki, Tiezhu Yang, linux-mips,
linux-kernel, clang-built-linux
Clang's integrated assembler only accepts these instructions when the
cpu is set to mips32r5. With this change, we can assemble
malta_defconfig with Clang via `make LLVM_IAS=1`.
Link: https://github.com/ClangBuiltLinux/linux/issues/763
Reported-by: Dmitry Golovin <dima@golovin.in>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
arch/mips/include/asm/mipsregs.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 9c8099a6ffed..acdf8c69220b 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -2077,7 +2077,7 @@ _ASM_MACRO_0(tlbginvf, _ASM_INSN_IF_MIPS(0x4200000c)
({ int __res; \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips32r2\n\t" \
+ ".set\tmips32r5\n\t" \
_ASM_SET_VIRT \
"mfgc0\t%0, " #source ", %1\n\t" \
".set\tpop" \
@@ -2090,7 +2090,7 @@ _ASM_MACRO_0(tlbginvf, _ASM_INSN_IF_MIPS(0x4200000c)
({ unsigned long long __res; \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64r2\n\t" \
+ ".set\tmips64r5\n\t" \
_ASM_SET_VIRT \
"dmfgc0\t%0, " #source ", %1\n\t" \
".set\tpop" \
@@ -2103,7 +2103,7 @@ _ASM_MACRO_0(tlbginvf, _ASM_INSN_IF_MIPS(0x4200000c)
do { \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips32r2\n\t" \
+ ".set\tmips32r5\n\t" \
_ASM_SET_VIRT \
"mtgc0\t%z0, " #register ", %1\n\t" \
".set\tpop" \
@@ -2115,7 +2115,7 @@ do { \
do { \
__asm__ __volatile__( \
".set\tpush\n\t" \
- ".set\tmips64r2\n\t" \
+ ".set\tmips64r5\n\t" \
_ASM_SET_VIRT \
"dmtgc0\t%z0, " #register ", %1\n\t" \
".set\tpop" \
--
2.32.0.93.g670b81a890-goog
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] MIPS: set mips32r5 for virt extensions
2021-06-28 21:50 [PATCH] MIPS: set mips32r5 for virt extensions Nick Desaulniers
@ 2021-06-29 8:33 ` Thomas Bogendoerfer
0 siblings, 0 replies; 2+ messages in thread
From: Thomas Bogendoerfer @ 2021-06-29 8:33 UTC (permalink / raw)
To: Nick Desaulniers
Cc: Dmitry Golovin, Nathan Chancellor, Huacai Chen, WANG Xuerui,
Maciej W. Rozycki, Tiezhu Yang, linux-mips, linux-kernel,
clang-built-linux
On Mon, Jun 28, 2021 at 02:50:26PM -0700, Nick Desaulniers wrote:
> Clang's integrated assembler only accepts these instructions when the
> cpu is set to mips32r5. With this change, we can assemble
> malta_defconfig with Clang via `make LLVM_IAS=1`.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/763
> Reported-by: Dmitry Golovin <dima@golovin.in>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
> ---
> arch/mips/include/asm/mipsregs.h | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
^ permalink raw reply [flat|nested] 2+ messages in thread
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