diff options
Diffstat (limited to 'hw/virtio-pci.c')
| -rw-r--r-- | hw/virtio-pci.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index e714bcac72..c7f0c4d4ed 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -92,6 +92,9 @@ */ #define wmb() do { } while (0) +/* HACK for virtio to determine if it's running a big endian guest */ +bool virtio_is_big_endian(void); + /* virtio device */ /* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */ static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) @@ -400,9 +403,15 @@ static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, break; case 2: val = virtio_config_readw(proxy->vdev, addr); + if (virtio_is_big_endian()) { + val = bswap16(val); + } break; case 4: val = virtio_config_readl(proxy->vdev, addr); + if (virtio_is_big_endian()) { + val = bswap32(val); + } break; } return val; @@ -427,9 +436,15 @@ static void virtio_pci_config_write(void *opaque, hwaddr addr, virtio_config_writeb(proxy->vdev, addr, val); break; case 2: + if (virtio_is_big_endian()) { + val = bswap16(val); + } virtio_config_writew(proxy->vdev, addr, val); break; case 4: + if (virtio_is_big_endian()) { + val = bswap32(val); + } virtio_config_writel(proxy->vdev, addr, val); break; } @@ -442,7 +457,7 @@ static const MemoryRegionOps virtio_pci_config_ops = { .min_access_size = 1, .max_access_size = 4, }, - .endianness = DEVICE_NATIVE_ENDIAN, + .endianness = DEVICE_LITTLE_ENDIAN, }; static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |