Re: [XEN RFC PATCH v4 0/5] IOMMU subsystem redesign and PV-IOMMU interface

["Teddy Astie" <teddy.astie@xxxxxxxxxx>]

Hello,

Le 05/11/2024 à 02:10, Marek Marczykowski-Górecki a écrit :
> On Mon, Nov 04, 2024 at 02:28:38PM +0000, Teddy Astie wrote:
>> * introduce "dom0-iommu=no-dma" to make default context block all DMA
>>    (disables HAP and sync-pt), enforcing usage of PV-IOMMU for DMA
>>    Can be used to expose properly "Pre-boot DMA protection"
>
> This sounds like it disables HAP completely, but actually it looks like
> disabling sharing HAP page tables with IOMMU ones, right? That (HAP
> sharing) is relevant for PVH dom0 only, correct?
>

Yes that's it

Teddy


Teddy Astie | Vates XCP-ng Developer

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