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Date:   Mon, 2 Aug 2021 20:59:48 +0800
From:   Tianyu Lan <>
To:     Joerg Roedel <>, Dave Hansen <>
Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host
 visibility support

On 8/2/2021 8:01 PM, Joerg Roedel wrote:
> On Wed, Jul 28, 2021 at 08:29:41AM -0700, Dave Hansen wrote:
>> __set_memory_enc_dec() is turning into a real mess.  SEV, TDX and now
>> Hyper-V are messing around in here.
> I was going to suggest a PV_OPS call where the fitting implementation
> for the guest environment can be plugged in at boot. There is TDX and an
> SEV(-SNP) case, a Hyper-V case, and likely more coming up from other
> cloud/hypervisor vendors. Hiding all these behind feature checks is not
> going to make things cleaner.

Yes, that makes sense. I will do this in the next version.

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