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([2001:8003:e5b0:9f00:dbbc:1945:6e65:ec5]) by smtp.gmail.com with ESMTPSA id q3-20020a17090311c300b001ac897026cesm17766726plh.102.2023.07.04.17.33.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Jul 2023 17:33:21 -0700 (PDT) Message-ID: <6b8dd9cd-784c-b9e1-73de-6c84deba9426@redhat.com> Date: Wed, 5 Jul 2023 10:33:12 +1000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [RESEND PATCH v5 08/11] KVM: arm64: Implement kvm_arch_flush_remote_tlbs_range() Content-Language: en-US To: Raghavendra Rao Ananta , Oliver Upton , Marc Zyngier , James Morse , Suzuki K Poulose Cc: Paolo Bonzini , Sean Christopherson , Huacai Chen , Zenghui Yu , Anup Patel , Atish Patra , Jing Zhang , Colton Lewis , David Matlack , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org References: <20230621175002.2832640-1-rananta@google.com> <20230621175002.2832640-9-rananta@google.com> From: Gavin Shan In-Reply-To: <20230621175002.2832640-9-rananta@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org On 6/22/23 03:49, Raghavendra Rao Ananta wrote: > Implement kvm_arch_flush_remote_tlbs_range() for arm64 > to invalidate the given range in the TLB. > > Signed-off-by: Raghavendra Rao Ananta > --- > arch/arm64/include/asm/kvm_host.h | 3 +++ > arch/arm64/kvm/mmu.c | 7 +++++++ > 2 files changed, 10 insertions(+) > Reviewed-by: Gavin Shan > diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h > index 81ab41b84f436..343fb530eea9c 100644 > --- a/arch/arm64/include/asm/kvm_host.h > +++ b/arch/arm64/include/asm/kvm_host.h > @@ -1081,6 +1081,9 @@ struct kvm *kvm_arch_alloc_vm(void); > #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS > int kvm_arch_flush_remote_tlbs(struct kvm *kvm); > > +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE > +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages); > + > static inline bool kvm_vm_is_protected(struct kvm *kvm) > { > return false; > diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c > index d0a0d3dca9316..c3ec2141c3284 100644 > --- a/arch/arm64/kvm/mmu.c > +++ b/arch/arm64/kvm/mmu.c > @@ -92,6 +92,13 @@ int kvm_arch_flush_remote_tlbs(struct kvm *kvm) > return 0; > } > > +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages) > +{ > + kvm_tlb_flush_vmid_range(&kvm->arch.mmu, > + start_gfn << PAGE_SHIFT, pages << PAGE_SHIFT); > + return 0; > +} > + > static bool kvm_is_device_pfn(unsigned long pfn) > { > return !pfn_is_map_memory(pfn);