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Re: [PATCH 01/17] AMD/IOMMU: avoid recording each level's MFN when walking page table
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Wed, 25 Aug 2021 14:29:46 +0100
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 24/08/2021 15:15, Jan Beulich wrote:
> Both callers only care about the target (level 1) MFN. I also cannot
> see what we might need higher level MFNs for down the road. And even
> modern gcc doesn't recognize the optimization potential.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
I've been wanting to delete this for several years.
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