Re: [PATCH 2/4] intel_iommu: Support IR-only mode without DMA translation

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On Mon, 2022-03-14 at 14:25 +0000, David Woodhouse wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
> 
> By setting none of the SAGAW bits we can indicate to a guest that DMA
> translation isn't supported. Tested by booting Windows 10, as well as
> Linux guests with the fix at https://git.kernel.org/torvalds/c/c40aaaac10

I suppose we could update that commit message a little. Since I first
posted this and the IRE bugfix in October 2020, the Linux commit it
references was released in the v5.10 kernel.


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