vfio-pci: Fix endian issues in vfio_pci_size_rom()
VFIO is always little endian so do byte swapping of our mask on the way in and byte swapping of the size on the way out. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
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@ -1141,7 +1141,7 @@ static const MemoryRegionOps vfio_rom_ops = {
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static void vfio_pci_size_rom(VFIODevice *vdev)
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{
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uint32_t orig, size = (uint32_t)PCI_ROM_ADDRESS_MASK;
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uint32_t orig, size = cpu_to_le32((uint32_t)PCI_ROM_ADDRESS_MASK);
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off_t offset = vdev->config_offset + PCI_ROM_ADDRESS;
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char name[32];
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@ -1163,7 +1163,7 @@ static void vfio_pci_size_rom(VFIODevice *vdev)
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return;
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}
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size = ~(size & PCI_ROM_ADDRESS_MASK) + 1;
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size = ~(le32_to_cpu(size) & PCI_ROM_ADDRESS_MASK) + 1;
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if (!size) {
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return;
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