arm64: define __smp_xxx (fd072df8) · Commits · 戴 / test

This defines __smp_xxx barriers for arm64, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: arm64 does not support !SMP config, so smp_xxx and __smp_xxx are always equivalent. Signed-off-by:

Michael S. Tsirkin <mst@redhat.com> Acked-by:

Arnd Bergmann <arnd@arndb.de> Acked-by:

Peter Zijlstra (Intel) <peterz@infradead.org>

arch/arm64/include/asm/barrier.h

+5 −5

Original line number	Diff line number	Diff line
		@@ -35,11 +35,11 @@
		#define dma_rmb() dmb(oshld)
		#define dma_wmb() dmb(oshst)

		#define smp_mb() dmb(ish)
		#define smp_rmb() dmb(ishld)
		#define smp_wmb() dmb(ishst)
		#define __smp_mb() dmb(ish)
		#define __smp_rmb() dmb(ishld)
		#define __smp_wmb() dmb(ishst)

		#define smp_store_release(p, v) \
		#define __smp_store_release(p, v) \
		do { \
		compiletime_assert_atomic_type(*p); \
		switch (sizeof(*p)) { \
		@@ -62,7 +62,7 @@ do { \
		} \
		} while (0)

		#define smp_load_acquire(p) \
		#define __smp_load_acquire(p) \
		({ \
		union { typeof(*p) __val; char __c[1]; } __u; \
		compiletime_assert_atomic_type(*p); \

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