tools/virtio: add barrier for aarch64 (1a5514cb) · Commits · 戴 / test

Add barrier for aarch64 for cross compiling, and most are from Linux Kernel. Signed-off-by:

tools/virtio/asm/barrier.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,16 @@
		# define mb() abort()
		# define dma_rmb() abort()
		# define dma_wmb() abort()
		#elif defined(__aarch64__)
		#define dmb(opt) asm volatile("dmb " #opt : : : "memory")
		#define virt_mb() __sync_synchronize()
		#define virt_rmb() dmb(ishld)
		#define virt_wmb() dmb(ishst)
		#define virt_store_mb(var, value) do { WRITE_ONCE(var, value); dmb(ish); } while (0)
		/* Weak barriers should be used. If not - it's a bug */
		# define mb() abort()
		# define dma_rmb() abort()
		# define dma_wmb() abort()
		#else
		#error Please fill in barrier macros
		#endif