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AJvYcCWCpd4WA/Ro6CY5ccz4t0FKJfTOq/DpqEMamD5inUOMPkF9dC71f9oKnRbKypRyXB96xlIUoynlPg==@kvack.org X-Gm-Message-State: AOJu0Yy8ET3JKRRspwEqj2ZtyyAJnIZQGk6BjAI0gfALCVSuWuq+LTcQ ctPwWBeNiWO50hdFuxHifR80rlTAO4LiTSlonviDz1QXGSZH2va1J735v1koaidU3vu1ZrF3n+Q YnvCHWL5ISJbSgJwdCuTA1Ut/HQ== X-Google-Smtp-Source: AGHT+IHBbNLrQlITZTUEwJZc7PPMBuWUPvVh41ATm80JrPARR6vxu6fTSW3zd2GzVR7d4WnT1Q219CCX9tRIUbCxQw== X-Received: from pji14.prod.google.com ([2002:a17:90b:3fce:b0:313:1c10:3595]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:3c90:b0:311:d3a5:572a with SMTP id 98e67ed59e1d1-31e5071cc94mr12799088a91.8.1753400812263; Thu, 24 Jul 2025 16:46:52 -0700 (PDT) Date: Thu, 24 Jul 2025 16:46:50 -0700 In-Reply-To: <20250723104714.1674617-1-tabba@google.com> 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: Ackerley Tng To: Fuad Tabba , kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org, kvmarm@lists.linux.dev Cc: pbonzini@redhat.com, chenhuacai@kernel.org, mpe@ellerman.id.au, anup@brainfault.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, seanjc@google.com, 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, tabba@google.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 90B7440003 X-Stat-Signature: ur6dsw1xttbssn7zpye13r4w3mmwdmh4 X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1753400813-547946 X-HE-Meta: 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 y5gKsKNg 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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: 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? [1] https://lore.kernel.org/all/20250717162731.446579-14-tabba@google.com/