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Re: [Qemu-devel] [PATCH for-4.2 v10 13/15] virtio_iommu: Handle reserved
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH for-4.2 v10 13/15] virtio_iommu: Handle reserved regions in translation process |
Date: |
Mon, 19 Aug 2019 20:44:38 +0800 |
User-agent: |
Mutt/1.11.4 (2019-03-13) |
On Tue, Jul 30, 2019 at 07:21:35PM +0200, Eric Auger wrote:
> When translating an address we need to check if it belongs to
> a reserved virtual address range. If it does, there are 2 cases:
>
> - it belongs to a RESERVED region: the guest should neither use
> this address in a MAP not instruct the end-point to DMA on
> them. We report an error
>
> - It belongs to an MSI region: we bypass the translation.
>
> Signed-off-by: Eric Auger <address@hidden>
Reviewed-by: Peter Xu <address@hidden>
--
Peter Xu
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