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bh=xVLOuB5izvjqY2+yn+X5wA6bkjFEaB6u1KjQAeAFkZo=; b=uugyhFRnOzchYHhHSg8H5u8kTC82PEQybHaTBYg1gbNEGNSAQR7d5XW9iK0zjK9v1S uhskaosNCofdpE/p40IJo/JV9/IXa1tTHCLlY72miCycsXro0ukuF7EhZzNhz5VDiwuS lYG98P3sTMVHeGhv2AFcaXSlQV02jDejarGbmz/yeQKgIyWvKsJng/TRS8fPT5EqccoT MMrK6qvLw4R7IXlTugWkc13WEI3nIj3ngpy1eMPajdEp3L5KR1QKkdVBDGS1MX6dtp4O +Vj5OwrQ+xUFcxdQFCaTaACDA7G4Ig5kB5z2EtuHQFoQ2EnuF0W+i99K8UncXuMqpDDy vVrw== X-Forwarded-Encrypted: i=1; AKwUvBwp+RJV0jamvEAsxgEnUm84Lv0JLT/b2y8tSES5Q0ITZWxv4btwBKwvt4DcMaAlmI/JiJm+yQjt4WZR8mA=@lists.ozlabs.org X-Gm-Message-State: AFq9FYIXwc4jetgqwpsQovhVxZI0ulnUH/mzrgEhgxTr0VeqO6e5OokU nEpltXiOgwq6KLMvm5O6XIw0tv37QyZVuiukkTaRZtPhV3EoS/pU3a7lum0i5ncMnVfE0JneJqA BXBD4AQ== X-Received: from pfwy10.prod.google.com ([2002:a05:6a00:1c8a:b0:89f:5522:3f42]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:a118:b0:89f:c441:580a with SMTP id d2e1a72fcca58-8a9bf339441mr2641764b3a.36.1793395276884; Fri, 30 Oct 2026 14:21:16 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 30 Oct 2026 14:20:51 -0700 In-Reply-To: <20261030212112.2598640-1-seanjc@google.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , Precedence: list X-Archived-By: Mime-Version: 1.0 References: <20261030212112.2598640-1-seanjc@google.com> X-Mailer: git-send-email 2.56.0.385.gac671c819a-goog Message-ID: <20261030212112.2598640-4-seanjc@google.com> Subject: [PATCH v4 03/23] KVM: PPC: Flush/zap all memslots on kvm_arch_flush_shadow_all() From: Sean Christopherson To: Madhavan Srinivasan , Sean Christopherson , Paolo Bonzini Cc: Nicholas Piggin , linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Jim Mattson , James Houghton , Chris Mason Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Flush/zap every memslot in kvm_arch_flush_shadow_all(), i.e. when the owning userspace process is exiting, as KVM must ensure all associated memory is unmapped from the guest. Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson --- arch/powerpc/include/asm/kvm_host.h | 1 - arch/powerpc/kvm/powerpc.c | 11 +++++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 708a32f89776..50a42f80e5f1 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -910,7 +910,6 @@ struct kvm_vcpu_arch { #define __KVM_HAVE_CREATE_DEVICE static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {} -static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {} static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {} diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 9194cf492d1c..9e9d0865c2f6 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -764,6 +764,17 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, kvmppc_core_commit_memory_region(kvm, old, new, change); } +void kvm_arch_flush_shadow_all(struct kvm *kvm) +{ + struct kvm_memory_slot *slot; + struct kvm_memslots *slots; + int bkt; + + slots = kvm_memslots(kvm); + kvm_for_each_memslot(slot, bkt, slots) + kvmppc_core_flush_memslot(kvm, slot); +} + void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot) { -- 2.56.0.385.gac671c819a-goog