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AJvYcCV7/di7B2uex6495moHsdE54vdo/akJXp7yLENT6sBTuU+PrpxDoaNP2Q3oKnfIf7lIX5DPdh/b/w==@kvack.org X-Gm-Message-State: AOJu0Yx85iMs7OSANseoaZFNWVkD5+Zt/cu98SwIuuBp+wI0iKUsWys8 3BvtuG/knE+8l7gFUKzykq9R7lVoWAcMYZXeDwBUrAnvbJeRxLL7n/7TYUk1FPYK/XJjyzDO7by +6V4c8w== X-Google-Smtp-Source: AGHT+IHSdqHbxeeeIonkSh5BY2m83Kk+wImCtE785oBEw0uVpGh4sf1S5Bqzy2yOyFZqFe/ReQAn+EAhx5g= X-Received: from pjvf3.prod.google.com ([2002:a17:90a:da83:b0:312:ea08:fa64]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ca8d:b0:23f:b954:eee with SMTP id d9443c01a7336-23fb9541174mr15170785ad.35.1753455397682; Fri, 25 Jul 2025 07:56:37 -0700 (PDT) Date: Fri, 25 Jul 2025 07:56:36 -0700 In-Reply-To: Mime-Version: 1.0 References: <20250723104714.1674617-1-tabba@google.com> Message-ID: Subject: Re: [PATCH v16 00/22] KVM: Enable host userspace mapping for guest_memfd-backed memory for non-CoCo VMs From: Sean Christopherson To: Ackerley Tng Cc: Fuad Tabba , kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org, kvmarm@lists.linux.dev, pbonzini@redhat.com, chenhuacai@kernel.org, mpe@ellerman.id.au, anup@brainfault.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, viro@zeniv.linux.org.uk, brauner@kernel.org, willy@infradead.org, akpm@linux-foundation.org, xiaoyao.li@intel.com, yilun.xu@intel.com, chao.p.peng@linux.intel.com, jarkko@kernel.org, amoorthy@google.com, dmatlack@google.com, isaku.yamahata@intel.com, mic@digikod.net, vbabka@suse.cz, vannapurve@google.com, mail@maciej.szmigiero.name, david@redhat.com, michael.roth@amd.com, wei.w.wang@intel.com, liam.merwick@oracle.com, isaku.yamahata@gmail.com, kirill.shutemov@linux.intel.com, suzuki.poulose@arm.com, steven.price@arm.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_tsoni@quicinc.com, quic_svaddagi@quicinc.com, quic_cvanscha@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, catalin.marinas@arm.com, james.morse@arm.com, yuzenghui@huawei.com, oliver.upton@linux.dev, maz@kernel.org, will@kernel.org, qperret@google.com, keirf@google.com, roypat@amazon.co.uk, shuah@kernel.org, hch@infradead.org, jgg@nvidia.com, rientjes@google.com, jhubbard@nvidia.com, fvdl@google.com, hughd@google.com, jthoughton@google.com, peterx@redhat.com, pankaj.gupta@amd.com, ira.weiny@intel.com Content-Type: text/plain; charset="us-ascii" X-Stat-Signature: yxwmdeyztdmy3hq6bmre9abgj8k6acfk X-Rspam-User: X-Rspamd-Queue-Id: 0A16440016 X-Rspamd-Server: rspam02 X-HE-Tag: 1753455398-694570 X-HE-Meta: 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 lQNWlioJ 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Jul 24, 2025, Ackerley Tng wrote: > Fuad Tabba writes: > > [snip] > > Did the patch [1] for x86/mmu that actually allows faulting when > kvm_memslot_is_gmem_only() get dropped by accident? Ah shoot, it did get dropped. I have a feeling Fuad read "drop the helper" as "drop the patch" :-) Faud, given the growing list of x86-specific goofs, any objection to me sending v17? I'd also like to tack on a selftest patch to verify that KVM can actually fault-in non-private memory via a guest_memfd fd.