linux-kernel - Re: [PATCH RFC v7 02/64] KVM: x86: Add KVM_CAP_UNMAPPED_PRIVATE

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Message-ID: <Y7a7O5VY+EyHPzA+@zn.tnic>
Date:   Thu, 5 Jan 2023 12:57:47 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Michael Roth <michael.roth@....com>
Cc:     kvm@...r.kernel.org, linux-coco@...ts.linux.dev,
        linux-mm@...ck.org, linux-crypto@...r.kernel.org, x86@...nel.org,
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        ardb@...nel.org, pbonzini@...hat.com, seanjc@...gle.com,
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        ashish.kalra@....com, harald@...fian.com,
        chao.p.peng@...ux.intel.com
Subject: Re: [PATCH RFC v7 02/64] KVM: x86: Add
 KVM_CAP_UNMAPPED_PRIVATE_MEMORY

On Wed, Jan 04, 2023 at 11:47:21AM -0600, Michael Roth wrote:
> But maybe it's okay to just make KVM_CAP_MEMORY_ATTRIBUTES writeable and
> require userspace to negotiate it rather than just tying it to
> CONFIG_HAVE_KVM_MEMORY_ATTRIBUTES. Or maybe introducing a new
> KVM_SET_SUPPORTED_MEMORY_ATTRIBUTES ioctl to pair with
> KVM_GET_SUPPORTED_MEMORY_ATTRIBUTES. It sort of makes sense, since userspace
> needs to be prepared to deal with KVM_EXIT_MEMORY_FAULTs relating to these
> attributes.

Makes sense.

AFAICT, ofc.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette