Re: [XEN PATCH v14 1/5] xen/pci: Add hypercall to support reset of pcidev

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, Sep 03, 2024 at 03:04:20PM +0800, Jiqian Chen wrote:
> When a device has been reset on dom0 side, the Xen hypervisor
> doesn't get notification, so the cached state in vpci is all
> out of date compare with the real device state.
> 
> To solve that problem, add a new hypercall to support the reset
> of pcidev and clear the vpci state of device. So that once the
> state of device is reset on dom0 side, dom0 can call this
> hypercall to notify hypervisor.
> 
> The behavior of different reset types may be different in the
> future, so divide them now so that they can be easily modified
> in the future without affecting the hypercall interface.
> 
> Signed-off-by: Jiqian Chen <Jiqian.Chen@xxxxxxx>
> Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
> Signed-off-by: Jiqian Chen <Jiqian.Chen@xxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Thanks, Roger.