subject:"\"\\\[PATCH v2\\\] iommu\\\/vt\\\-d\\\: do not use flush\\\-queue when caching\\\-mode is on\""

Re: [PATCH v2] iommu/vt-d: do not use flush-queue when caching-mode is on

2021-01-27 Thread Nadav Amit

> On Jan 27, 2021, at 3:25 AM, Lu Baolu wrote: > > On 2021/1/27 14:17, Nadav Amit wrote: >> From: Nadav Amit >> When an Intel IOMMU is virtualized, and a physical device is >> passed-through to the VM, changes of the virtual IOMMU need to be >> propagated to the physical IOMMU. The hypervisor th

Re: [PATCH v2] iommu/vt-d: do not use flush-queue when caching-mode is on

2021-01-27 Thread Lu Baolu

On 2021/1/27 14:17, Nadav Amit wrote: From: Nadav Amit When an Intel IOMMU is virtualized, and a physical device is passed-through to the VM, changes of the virtual IOMMU need to be propagated to the physical IOMMU. The hypervisor therefore needs to monitor PTE mappings in the IOMMU page-tables

[PATCH v2] iommu/vt-d: do not use flush-queue when caching-mode is on

2021-01-26 Thread Nadav Amit

From: Nadav Amit When an Intel IOMMU is virtualized, and a physical device is passed-through to the VM, changes of the virtual IOMMU need to be propagated to the physical IOMMU. The hypervisor therefore needs to monitor PTE mappings in the IOMMU page-tables. Intel specifications provide "caching-