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Received: from [138.199.18.130] (helo=[172.31.28.190]) by casper.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tci7X-0000000ARyH-2y9k; Tue, 28 Jan 2025 09:42:59 +0000 Message-ID: <83d44307f30ad8ce19de3edcdc00c179750e0e23.camel@infradead.org> Subject: Re: [RFC PATCH 00/39] 1G page support for guest_memfd From: Amit Shah To: Ackerley Tng , tabba@google.com, quic_eberman@quicinc.com, roypat@amazon.co.uk, jgg@nvidia.com, peterx@redhat.com, david@redhat.com, rientjes@google.com, fvdl@google.com, jthoughton@google.com, seanjc@google.com, pbonzini@redhat.com, zhiquan1.li@intel.com, fan.du@intel.com, jun.miao@intel.com, isaku.yamahata@intel.com, muchun.song@linux.dev, mike.kravetz@oracle.com Cc: erdemaktas@google.com, vannapurve@google.com, qperret@google.com, jhubbard@nvidia.com, willy@infradead.org, shuah@kernel.org, brauner@kernel.org, bfoster@redhat.com, kent.overstreet@linux.dev, pvorel@suse.cz, rppt@kernel.org, richard.weiyang@gmail.com, anup@brainfault.org, haibo1.xu@intel.com, ajones@ventanamicro.com, vkuznets@redhat.com, maciej.wieczor-retman@intel.com, pgonda@google.com, oliver.upton@linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-fsdevel@kvack.org Date: Tue, 28 Jan 2025 10:42:57 +0100 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.3 (3.54.3-1.fc41) MIME-Version: 1.0 X-Rspamd-Queue-Id: 93C9F20005 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: w1zop51enn34nggtdug7fzsy6rzhk83g X-HE-Tag: 1738057396-31379 X-HE-Meta: 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 1zjrulWt Cy0Le77lKQMYAkipGV07FUFJuRkK5Vu5UgpdsFOWGDAVHpwnIVui37kNxfovwYzadUjPxu29H6x3IvBbZ1pGXE0XZzrdGYoYwB8MydSWzbZT3cB1jOVCsaTb6EVz3aWEXU5B2Rrt7IdHDMBS8Kq2985slbzX4kExwzIufxq8Z2dnTwFpS2V4a7VxARaxE7cpW0Rj3av1cJXSxAAXawlPYmdtXYyV4NyjRzRq8FB6mTN5bhryU2N7v+iRB9g+QM5GMlsRmsBjJXpx5WK3GTgIPQGL6bhz9vDf7zDGmojfJ0Va9TrIj9T4wV6eRnOQwOrAR5KeG45+LEgPSlvpCgl8mLvb5qz3wX4V8Dn4g X-Bogosity: Ham, tests=bogofilter, spamicity=0.052589, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hey Ackerley, On Tue, 2024-09-10 at 23:43 +0000, Ackerley Tng wrote: > Hello, >=20 > This patchset is our exploration of how to support 1G pages in > guest_memfd, and > how the pages will be used in Confidential VMs. We've discussed this patchset at LPC and in the guest-memfd calls. Can you please summarise the discussions here as a follow-up, so we can also continue discussing on-list, and not repeat things that are already discussed? Also - as mentioned in those meetings, we at AMD are interested in this series along with SEV-SNP support - and I'm also interested in figuring out how we collaborate on the evolution of this series. Thanks, Amit