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hw/virtio: enable ioeventfd configuring for mmio

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This patch adds ioeventfd flag for virtio-mmio configuration.
It allows switching ioeventfd on and off.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <161700379211.1135943.8859209566937991305.stgit@pasha-ThinkPad-X280>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2021-03-29 10:43:12 +03:00 • committed by Michael S. Tsirkin
parent 05dfb447a4
commit b8893a3c86
2 changed files with 15 additions and 1 deletions
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5
include/hw/virtio/virtio-mmio.h
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@ -49,12 +49,17 @@ typedef struct VirtIOMMIOQueue {
uint32_t used[2];
} VirtIOMMIOQueue;
#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT 1
#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD \
(1 << VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT)
struct VirtIOMMIOProxy {
/* Generic */
SysBusDevice parent_obj;
MemoryRegion iomem;
qemu_irq irq;
bool legacy;
uint32_t flags;
/* Guest accessible state needing migration and reset */
uint32_t host_features_sel;
uint32_t guest_features_sel;