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| author | Michael Ellerman | 2019-07-29 14:28:54 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2019-07-31 14:56:27 +0200 |
| commit | ed4289e8b48845888ee46377bd2b55884a55e60b (patch) | |
| tree | fca00fca20fff3900a9f7b224df799d667f05ef0 /arch/powerpc/include | |
| parent | powerpc/kasan: fix early boot failure on PPC32 (diff) | |
| download | kernel-qcow2-linux-ed4289e8b48845888ee46377bd2b55884a55e60b.tar.gz kernel-qcow2-linux-ed4289e8b48845888ee46377bd2b55884a55e60b.tar.xz kernel-qcow2-linux-ed4289e8b48845888ee46377bd2b55884a55e60b.zip | |
Revert "powerpc: slightly improve cache helpers"
This reverts commit 6c5875843b87c3adea2beade9d1b8b3d4523900a.
It triggers a probable compiler bug on clang which leads to crashes.
With GCC it allows the compiler to use a more efficient register
allocation but current GCC versions never do that at any of the current
call sites, so there's no benefit.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/cache.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h index b3388d95f451..45e3137ccd71 100644 --- a/arch/powerpc/include/asm/cache.h +++ b/arch/powerpc/include/asm/cache.h @@ -107,22 +107,22 @@ extern void _set_L3CR(unsigned long); static inline void dcbz(void *addr) { - __asm__ __volatile__ ("dcbz %y0" : : "Z"(*(u8 *)addr) : "memory"); + __asm__ __volatile__ ("dcbz 0, %0" : : "r"(addr) : "memory"); } static inline void dcbi(void *addr) { - __asm__ __volatile__ ("dcbi %y0" : : "Z"(*(u8 *)addr) : "memory"); + __asm__ __volatile__ ("dcbi 0, %0" : : "r"(addr) : "memory"); } static inline void dcbf(void *addr) { - __asm__ __volatile__ ("dcbf %y0" : : "Z"(*(u8 *)addr) : "memory"); + __asm__ __volatile__ ("dcbf 0, %0" : : "r"(addr) : "memory"); } static inline void dcbst(void *addr) { - __asm__ __volatile__ ("dcbst %y0" : : "Z"(*(u8 *)addr) : "memory"); + __asm__ __volatile__ ("dcbst 0, %0" : : "r"(addr) : "memory"); } #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ |