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Date: Fri, 16 Jan 2026 18:16:47 +0000
From: Nikita Kalyazin <kalyazin@...zon.com>
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Subject: Re: [PATCH v9 07/13] KVM: guest_memfd: Add flag to remove from direct
 map



On 16/01/2026 18:10, Edgecombe, Rick P wrote:
> On Fri, 2026-01-16 at 17:51 +0000, Nikita Kalyazin wrote:
>> Yes, this is a problem that we'd like to address.  We have been
>> discussing it in [1].  The effect of flushing on memory population
>> that we see on x86 is 5-7x elongation.  We are thinking of making use
>> of the no-direct-map memory allocator that Brendan is working on [2].
> 
> Ah, makes sense.
> 
> Do you plan to merge this before the performance problems are
> addressed? I guess this series focuses on safety and functionality
> first.

Yes, we'd like to merge the functional part first and then optimise it 
in the further series.

> 

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