UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

Revert "powerpc: slightly improve cache helpers" 

This reverts commit 6c5875843b.

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>
This commit is contained in:
Michael Ellerman 2019-07-29 22:28:54 +10:00
parent d7e23b887f
commit ed4289e8b4
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/powerpc/include/asm/cache.h
View File

@ -107,22 +107,22 @@ extern void _set_L3CR(unsigned long);
static inline void dcbz(void *addr) 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) 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) 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) 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 /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */