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SubjectRe: [PATCH] PCI: hv: Detect and fix Hyper-V PCI domain number collision
On Sun, May 19, 2019 at 10:28:37PM +0000, Haiyang Zhang wrote:
>Due to Azure host agent settings, the device instance ID's bytes 8 and 9
>are no longer unique. This causes some of the PCI devices not showing up
>in VMs with multiple passthrough devices, such as GPUs. So, as recommended
>by Azure host team, we now use the bytes 4 and 5 which usually provide
>unique numbers.
>In the rare cases of collision, we will detect and find another number
>that is not in use.
>Thanks to Michael Kelley <> for proposing this idea.
>Signed-off-by: Haiyang Zhang <>

Queued up for hyperv-fixes, thank you.


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