Hi Radim,
On 21/07/2016 18:21, Radim Krčmář wrote:
> 2016-07-18 13:25+0000, Eric Auger:
>> Up to now, only irqchip routing entries could be set. This patch
>> adds the capability to insert MSI routing entries.
>>
>> For ARM64, let's also increase KVM_MAX_IRQ_ROUTES to 4096: this
>> include SPI irqchip routes plus MSI routes. In the future this
>> might be extended.
>>
>> Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
>> Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
>>
>> ---
>> v6 -> v7:
>> - added Andre's R-b
>>
>> v2 -> v3:
>> - remove any reference to KVM_IRQ_ROUTING_EXTENDED_MSI type
>> - unconditionnaly uapi flags and devid downto the kernel
>> routing entry struct
>> - handle KVM_MSI_VALID_DEVID flag in kvm_set_irq_routing
>> - note about KVM_CAP_MSI_DEVID moved in the first patch file
>> of the series
>>
>> v1 -> v2:
>> - adapt to new routing entry types
>>
>> RFC -> PATCH:
>> - move api MSI routing updates into that patch file
>> - use new devid field of user api struct
>> ---
>> diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
>> @@ -209,7 +209,7 @@ int kvm_set_irq_routing(struct kvm *kvm,
>> goto out;
>>
>> r = -EINVAL;
>> - if (ue->flags) {
>> + if (ue->flags & ~KVM_MSI_VALID_DEVID) {
>
> This allows KVM_MSI_VALID_DEVID flag for all route types, which is not
> what we want.
> To avoid checking separately when setting MSI route in every arch,
> I think we could have a switch (ue->type) here as well.
Yes correct, I will add this type check.
Thanks
Eric
>
>> kfree(e);
>> goto out;
>> }
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