On Thu, 23 Jan 2020 13:47:47 +0000
Alexandru Elisei <alexandru.elisei@xxxxxxx> wrote:
> Not all devices have the bottom 32 bits of a 64 bit BAR in an even
> numbered BAR. For example, on an NVIDIA Quadro P400, BARs 1 and 3 are
> 64bit. Remove this assumption.
>
> Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx>
Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
Cheers,
Andre
> ---
> vfio/pci.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/vfio/pci.c b/vfio/pci.c
> index bbb8469c8d93..1bdc20038411 100644
> --- a/vfio/pci.c
> +++ b/vfio/pci.c
> @@ -920,8 +920,10 @@ static int vfio_pci_configure_dev_regions(struct kvm *kvm,
>
> for (i = VFIO_PCI_BAR0_REGION_INDEX; i <= VFIO_PCI_BAR5_REGION_INDEX; ++i) {
> /* Ignore top half of 64-bit BAR */
> -if (i % 2 && is_64bit)
> +if (is_64bit) {
> +is_64bit = false;
> continue;
> +}
>
> ret = vfio_pci_configure_bar(kvm, vdev, i);
> if (ret)
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