>-Original Message-
>From: Cédric Le Goater
>Subject: Re: [PATCH v4 04/20] vfio/iommufd: Force creating nested parent
>domain
>
>On 7/30/25 12:55, Duan, Zhenzhong wrote:
>>
>>
>>> -Original Message-
>>> From: Cédric Le Goater
On 7/30/25 12:55, Duan, Zhenzhong wrote:
-Original Message-
From: Cédric Le Goater
Subject: Re: [PATCH v4 04/20] vfio/iommufd: Force creating nested parent
domain
On 7/29/25 11:20, Zhenzhong Duan wrote:
Call pci_device_get_viommu_cap() to get if vIOMMU supports
>-Original Message-
>From: Cédric Le Goater
>Subject: Re: [PATCH v4 04/20] vfio/iommufd: Force creating nested parent
>domain
>
>On 7/29/25 11:20, Zhenzhong Duan wrote:
>> Call pci_device_get_viommu_cap() to get if vIOMMU supports
>VIOMMU_CAP_HW_NESTED,
>
On 7/29/25 11:20, Zhenzhong Duan wrote:
Call pci_device_get_viommu_cap() to get if vIOMMU supports VIOMMU_CAP_HW_NESTED,
if yes, create nested parent domain which could be reused by vIOMMU to create
nested domain.
It is safe because hw_caps & VIOMMU_CAP_HW_NESTED cannot be set yet because
s->flt
Call pci_device_get_viommu_cap() to get if vIOMMU supports VIOMMU_CAP_HW_NESTED,
if yes, create nested parent domain which could be reused by vIOMMU to create
nested domain.
It is safe because hw_caps & VIOMMU_CAP_HW_NESTED cannot be set yet because
s->flts is forbidden until we support passthroug
