msix: allow qword MSI-X table accesses
PCI spec says:
For all accesses to MSI-X Table and MSI-X PBA fields, software must use
aligned full DWORD or aligned full QWORD transactions; otherwise, the
result is undefined.
However, since MSI-X was converted to use memory API, QEMU
started blocking qword transactions, only allowing DWORD
ones. Guests do not seem to use QWORD accesses, but let's
be spec compliant.
Fixes: 95524ae8dc
("msix: convert to memory API")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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@ -199,6 +199,9 @@ static const MemoryRegionOps msix_table_mmio_ops = {
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.endianness = DEVICE_LITTLE_ENDIAN,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid = {
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.valid = {
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.min_access_size = 4,
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.min_access_size = 4,
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.max_access_size = 8,
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},
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.impl = {
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.max_access_size = 4,
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.max_access_size = 4,
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},
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},
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};
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};
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@ -227,6 +230,9 @@ static const MemoryRegionOps msix_pba_mmio_ops = {
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.endianness = DEVICE_LITTLE_ENDIAN,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid = {
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.valid = {
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.min_access_size = 4,
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.min_access_size = 4,
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.max_access_size = 8,
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},
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.impl = {
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.max_access_size = 4,
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.max_access_size = 4,
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},
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},
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};
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};
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