On 2024/8/1 21:01, Roger Pau Monné wrote:
> On Mon, Jul 08, 2024 at 07:41:23PM +0800, Jiqian Chen wrote:
>> When passthrough a device to domU, QEMU and xl tools use its gsi
>> number to do pirq mapping, see QEMU code
>> xen_pt_realize->xc_physdev_map_pirq, and xl code
>> pci_add_dm_done->xc_physdev
On Mon, Jul 08, 2024 at 07:41:23PM +0800, Jiqian Chen wrote:
> When passthrough a device to domU, QEMU and xl tools use its gsi
> number to do pirq mapping, see QEMU code
> xen_pt_realize->xc_physdev_map_pirq, and xl code
> pci_add_dm_done->xc_physdev_map_pirq, but the gsi number is got
> from file
On Tue, Jul 09, 2024 at 03:35:57AM +, Chen, Jiqian wrote:
> On 2024/7/8 21:27, Anthony PERARD wrote:
> > You could reuse the already opened fd from libxencall:
> > xencall_fd(xch->xcall)
> Do I need to check it this fd<0?
No, it should be good to use.
Cheers,
--
Anthony Perard | Vates
On 2024/7/8 21:27, Anthony PERARD wrote:
> On Mon, Jul 08, 2024 at 07:41:23PM +0800, Jiqian Chen wrote:
>> diff --git a/tools/libs/ctrl/xc_physdev.c b/tools/libs/ctrl/xc_physdev.c
>> index e9fcd755fa62..54edb0f3c0dc 100644
>> --- a/tools/libs/ctrl/xc_physdev.c
>> +++ b/tools/libs/ctrl/xc_physdev.c
On Mon, Jul 08, 2024 at 07:41:23PM +0800, Jiqian Chen wrote:
> diff --git a/tools/libs/ctrl/xc_physdev.c b/tools/libs/ctrl/xc_physdev.c
> index e9fcd755fa62..54edb0f3c0dc 100644
> --- a/tools/libs/ctrl/xc_physdev.c
> +++ b/tools/libs/ctrl/xc_physdev.c
> @@ -111,3 +111,38 @@ int xc_physdev_unmap_pir
When passthrough a device to domU, QEMU and xl tools use its gsi
number to do pirq mapping, see QEMU code
xen_pt_realize->xc_physdev_map_pirq, and xl code
pci_add_dm_done->xc_physdev_map_pirq, but the gsi number is got
from file /sys/bus/pci/devices//irq, that is wrong, because
irq is not equal wit
