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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id dk16sm105625ejb.85.2021.01.11.09.31.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Jan 2021 09:32:00 -0800 (PST) Subject: Re: [PATCH 0/2] Use static_call for kvm_x86_ops To: Jason Baron , kvm@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, peterz@infradead.org, aarcange@redhat.com, x86@kernel.org, linux-kernel@vger.kernel.org References: From: Paolo Bonzini Message-ID: Date: Mon, 11 Jan 2021 18:31:58 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 11/01/21 17:57, Jason Baron wrote: > Hi, > > Convert kvm_x86_ops to use static_call. Shows good performance > gains for cpuid loop micro-benchmark (resulsts included in patch 2). > > Thanks, > > -Jason > > Jason Baron (2): > KVM: x86: introduce definitions to support static calls for kvm_x86_ops > KVM: x86: use static calls to reduce kvm_x86_ops overhead > > arch/x86/include/asm/kvm_host.h | 71 +++++++++- > arch/x86/kvm/cpuid.c | 2 +- > arch/x86/kvm/hyperv.c | 4 +- > arch/x86/kvm/irq.c | 2 +- > arch/x86/kvm/kvm_cache_regs.h | 10 +- > arch/x86/kvm/lapic.c | 28 ++-- > arch/x86/kvm/mmu.h | 6 +- > arch/x86/kvm/mmu/mmu.c | 12 +- > arch/x86/kvm/mmu/spte.c | 2 +- > arch/x86/kvm/pmu.c | 2 +- > arch/x86/kvm/trace.h | 4 +- > arch/x86/kvm/x86.c | 299 ++++++++++++++++++++-------------------- > arch/x86/kvm/x86.h | 6 +- > 13 files changed, 259 insertions(+), 189 deletions(-) > Thank you thank you thank you! :) (Except that now I have to find another task for a new KVM developer, but that's not a big deal). Paolo