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([2001:8003:e5b0:9f00:dbbc:1945:6e65:ec5]) by smtp.gmail.com with ESMTPSA id y9-20020a17090322c900b001b2069072ccsm9850474plg.18.2023.08.08.21.11.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Aug 2023 21:11:22 -0700 (PDT) Message-ID: <79b8548e-715a-85ee-aad6-cb0b97753df6@redhat.com> Date: Wed, 9 Aug 2023 14:11:09 +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: [PATCH v8 04/14] KVM: Remove CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL 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 , Reiji Watanabe , Colton Lewis , David Matlack , Fuad Tabba , 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, Shaoqin Huang References: <20230808231330.3855936-1-rananta@google.com> <20230808231330.3855936-5-rananta@google.com> From: Gavin Shan In-Reply-To: <20230808231330.3855936-5-rananta@google.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230808_211126_114317_286CF1D2 X-CRM114-Status: GOOD ( 15.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 8/9/23 09:13, Raghavendra Rao Ananta wrote: > kvm_arch_flush_remote_tlbs() or CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL > are two mechanisms to solve the same problem, allowing > architecture-specific code to provide a non-IPI implementation of > remote TLB flushing. > > Dropping CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL allows KVM to standardize > all architectures on kvm_arch_flush_remote_tlbs() instead of > maintaining two mechanisms. > > Signed-off-by: Raghavendra Rao Ananta > Reviewed-by: Shaoqin Huang > --- > virt/kvm/Kconfig | 3 --- > virt/kvm/kvm_main.c | 2 -- > 2 files changed, 5 deletions(-) > Reviewed-by: Gavin Shan > diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig > index b74916de5183a..484d0873061ca 100644 > --- a/virt/kvm/Kconfig > +++ b/virt/kvm/Kconfig > @@ -62,9 +62,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT > config KVM_VFIO > bool > > -config HAVE_KVM_ARCH_TLB_FLUSH_ALL > - bool > - > config HAVE_KVM_INVALID_WAKEUPS > bool > > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c > index 70e5479797ac3..d6b0507861550 100644 > --- a/virt/kvm/kvm_main.c > +++ b/virt/kvm/kvm_main.c > @@ -345,7 +345,6 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req) > } > EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request); > > -#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL > void kvm_flush_remote_tlbs(struct kvm *kvm) > { > ++kvm->stat.generic.remote_tlb_flush_requests; > @@ -366,7 +365,6 @@ void kvm_flush_remote_tlbs(struct kvm *kvm) > ++kvm->stat.generic.remote_tlb_flush; > } > EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs); > -#endif > > static void kvm_flush_shadow_all(struct kvm *kvm) > { _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel