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([2001:b07:6468:f312:9066:4f2:9fbd:f90e]) by smtp.gmail.com with ESMTPSA id p10sm22953476wrm.6.2020.04.15.07.53.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Apr 2020 07:53:30 -0700 (PDT) Subject: Re: [PATCH] KVM: Optimize kvm_arch_vcpu_ioctl_run function To: Vitaly Kuznetsov , Tianjia Zhang Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, maz@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com References: <20200413034523.110548-1-tianjia.zhang@linux.alibaba.com> <875ze2ywhy.fsf@vitty.brq.redhat.com> <87a73dxgk6.fsf@vitty.brq.redhat.com> From: Paolo Bonzini Message-ID: <9e122372-249d-3d93-99ed-a670fff33936@redhat.com> Date: Wed, 15 Apr 2020 16:53:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <87a73dxgk6.fsf@vitty.brq.redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15/04/20 11:07, Vitaly Kuznetsov wrote: > In case this is no longer needed I'd suggest we drop 'kvm_run' parameter > and extract it from 'struct kvm_vcpu' when needed. This looks like a > natural add-on to your cleanup patch. I agree, though I think it should be _instead_ of Tianjia's patch rather than on top. Paolo