Casting away const-ness (or volatile-ness) is never a good idea, and
there's no need to in cmpxchg16b().
No functional change intended.
Fixes: e0116acbbd0b ("x86: add cmpxchg16b support")
Signed-off-by: Jan Beulich <[email protected]>
--- a/xen/arch/x86/include/asm/x86_64/system.h
+++ b/xen/arch/x86/include/asm/x86_64/system.h
@@ -56,7 +56,7 @@ static always_inline __uint128_t cmpxchg
ASSERT(!((unsigned long)_p & 0xf)); \
BUILD_BUG_ON(sizeof(*(o)) != sizeof(__uint128_t)); \
BUILD_BUG_ON(sizeof(*(n)) != sizeof(__uint128_t)); \
- __cmpxchg16b(_p, (void *)(o), (void *)(n)); \
+ __cmpxchg16b(_p, (const void *)(o), (const void *)(n));\
})
#endif /* __X86_64_SYSTEM_H__ */
