Message-ID: <d85c1028-0fd9-52e6-1c3e-a8e50ffb57ed@amd.com>
Date:   Mon, 6 Mar 2023 16:33:34 +0530
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Subject: Re: [PATCH RFC v8 09/56] KVM: SEV: Handle memory backed by restricted
 memfd
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To:     Vlastimil Babka <vbabka@suse.cz>,
        Michael Roth <michael.roth@amd.com>, kvm@vger.kernel.org
Cc:     linux-coco@lists.linux.dev, linux-mm@kvack.org,
        linux-crypto@vger.kernel.org, x86@kernel.org,
        linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
        jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com,
        ardb@kernel.org, pbonzini@redhat.com, seanjc@google.com,
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        dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com,
        peterz@infradead.org, srinivas.pandruvada@linux.intel.com,
        rientjes@google.com, dovmurik@linux.ibm.com, tobin@ibm.com,
        bp@alien8.de, kirill@shutemov.name, ak@linux.intel.com,
        tony.luck@intel.com, marcorr@google.com,
        sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com,
        dgilbert@redhat.com, jarkko@kernel.org, ashish.kalra@amd.com,
        nikunj.dadhania@amd.com
References: <20230220183847.59159-1-michael.roth@amd.com>
 <20230220183847.59159-10-michael.roth@amd.com>
 <8670a645-f48f-1d64-e5a5-291f2593643a@suse.cz>
From:   "Nikunj A. Dadhania" <nikunj@amd.com>
In-Reply-To: <8670a645-f48f-1d64-e5a5-291f2593643a@suse.cz>
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On 03/03/23 19:35, Vlastimil Babka wrote:
> On 2/20/23 19:38, Michael Roth wrote:
>> From: Nikunj A Dadhania <nikunj@amd.com>
>>
>> Do not pin the guest memory backed by a restrictedmem backend, as
>> pages in the restrictedmem are already pinned. Instead, populate the
>> pages array for these guests using the already-pinned pages provided by
> 
> IIUC the "already pinned" became "effectively unmovable and unevictable"
> since the earlier versions, so that would be more accurate now?

Yes, that makes sense.

Regards
Nikunj