Re: [PATCH v2 1/2] iommu: Add capability for pre-boot DMA protection

2022-03-22 Thread Robin Murphy
On 2022-03-22 09:14, Christoph Hellwig wrote: On Fri, Mar 18, 2022 at 05:42:57PM +, Robin Murphy wrote: VT-d's dmar_platform_optin() actually represents a combination of properties fairly well standardised by Microsoft as "Pre-boot DMA Protection" and "Kernel DMA Protection"[1]. As such, we

Re: [PATCH v2 1/2] iommu: Add capability for pre-boot DMA protection

2022-03-22 Thread Christoph Hellwig
On Fri, Mar 18, 2022 at 05:42:57PM +, Robin Murphy wrote: > VT-d's dmar_platform_optin() actually represents a combination of > properties fairly well standardised by Microsoft as "Pre-boot DMA > Protection" and "Kernel DMA Protection"[1]. As such, we can provide > interested consumers with an

[PATCH v2 1/2] iommu: Add capability for pre-boot DMA protection

2022-03-18 Thread Robin Murphy
VT-d's dmar_platform_optin() actually represents a combination of properties fairly well standardised by Microsoft as "Pre-boot DMA Protection" and "Kernel DMA Protection"[1]. As such, we can provide interested consumers with an abstracted capability rather than driver-specific interfaces that won'