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hw/virtio: Access MemoryRegion with MemOp 

The memory_region_dispatch_{read|write} operand "unsigned size" is
being converted into a "MemOp op".

Convert interfaces by using no-op size_memop.

After all interfaces are converted, size_memop will be implemented
and the memory_region_dispatch_{read|write} operand "unsigned size"
will be converted into a "MemOp op".

As size_memop is a no-op, this patch does not change any behaviour.

Signed-off-by: Tony Nguyen <tony.nguyen@bt.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <ebf1f78029d5ac1de1739a11d679740a87a1f02f.1566466906.git.tony.nguyen@bt.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Tony Nguyen 2019-08-24 04:36:44 +10:00 committed by Richard Henderson
parent 40f74205da
commit 062c08d1fb
1 changed files with 5 additions and 2 deletions
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7
hw/virtio/virtio-pci.c
View File

@ -17,6 +17,7 @@
#include "qemu/osdep.h"
#include "exec/memop.h"
#include "standard-headers/linux/virtio_pci.h"
#include "hw/virtio/virtio.h"
#include "migration/qemu-file-types.h"
@ -552,7 +553,8 @@ void virtio_address_space_write(VirtIOPCIProxy *proxy, hwaddr addr,
/* As length is under guest control, handle illegal values. */
return;
}
memory_region_dispatch_write(mr, addr, val, len, MEMTXATTRS_UNSPECIFIED);
memory_region_dispatch_write(mr, addr, val, size_memop(len),
MEMTXATTRS_UNSPECIFIED);
}
static void
@ -575,7 +577,8 @@ virtio_address_space_read(VirtIOPCIProxy *proxy, hwaddr addr,
/* Make sure caller aligned buf properly */
assert(!(((uintptr_t)buf) & (len - 1)));
memory_region_dispatch_read(mr, addr, &val, len, MEMTXATTRS_UNSPECIFIED);
memory_region_dispatch_read(mr, addr, &val, size_memop(len),
MEMTXATTRS_UNSPECIFIED);
switch (len) {
case 1:
pci_set_byte(buf, val);