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| author | Nick Desaulniers <ndesaulniers@google.com> | 2023-08-03 11:33:52 -0700 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-16 23:54:48 +1000 |
| commit | ae7936d232d862e5b8311180036281ffe93735b8 (patch) | |
| tree | d0e7e6a3a9b7e6f0e9e62fa25be37492c82be1ef /arch/powerpc/kvm | |
| parent | 0e1cd3d9f82eb5440d32d4c0f12c65403b956cb5 (diff) | |
| download | linux-ae7936d232d862e5b8311180036281ffe93735b8.tar.gz linux-ae7936d232d862e5b8311180036281ffe93735b8.tar.bz2 linux-ae7936d232d862e5b8311180036281ffe93735b8.zip | |
powerpc/inst: add PPC_TLBILX_LPID
Clang didn't recognize the instruction tlbilxlpid. This was fixed in
clang-18 [0] then backported to clang-17 [1]. To support clang-16 and
older, rather than using that instruction bare in inline asm, add it to
ppc-opcode.h and use that macro as is done elsewhere for other
instructions.
Link: https://github.com/ClangBuiltLinux/linux/issues/1891
Link: https://github.com/llvm/llvm-project/issues/64080
Link: https://github.com/llvm/llvm-project/commit/53648ac1d0c953ae6d008864dd2eddb437a92468 [0]
Link: https://github.com/llvm/llvm-project-release-prs/commit/0af7e5e54a8c7ac665773ac1ada328713e8338f5 [1]
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/llvm/202307211945.TSPcyOhh-lkp@intel.com/
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230803-ppc_tlbilxlpid-v3-1-ca84739bfd73@google.com
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/e500mc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index d58df71ace58..e476e107a932 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -20,6 +20,7 @@ #include <asm/cputable.h> #include <asm/kvm_ppc.h> #include <asm/dbell.h> +#include <asm/ppc-opcode.h> #include "booke.h" #include "e500.h" @@ -92,7 +93,11 @@ void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500) local_irq_save(flags); mtspr(SPRN_MAS5, MAS5_SGS | get_lpid(&vcpu_e500->vcpu)); - asm volatile("tlbilxlpid"); + /* + * clang-17 and older could not assemble tlbilxlpid. + * https://github.com/ClangBuiltLinux/linux/issues/1891 + */ + asm volatile (PPC_TLBILX_LPID); mtspr(SPRN_MAS5, 0); local_irq_restore(flags); } |