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([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id s23sm19772546wmc.35.2021.02.01.00.21.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 01 Feb 2021 00:21:07 -0800 (PST) Subject: Re: [PATCH 1/2] KVM: x86/mmu: Make HVA handler retpoline-friendly To: "Maciej S. Szmigiero" , Vitaly Kuznetsov Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Igor Mammedov , Marc Zyngier , James Morse , Julien Thierry , Suzuki K Poulose , Huacai Chen , Aleksandar Markovic , Paul Mackerras , Christian Borntraeger , Janosch Frank , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Paolo Bonzini Message-ID: Date: Mon, 1 Feb 2021 09:21:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 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: linux-kernel@vger.kernel.org On 01/02/21 09:13, Maciej S. Szmigiero wrote: > static int kvm_handle_hva_range(struct kvm *kvm, > unsigned long start, > unsigned long end, > @@ -1495,8 +1534,9 @@ static int kvm_handle_hva_range(struct kvm *kvm, > -static int kvm_tdp_mmu_handle_hva_range(struct kvm *kvm, unsigned long start, > - unsigned long end, unsigned long data, > - int (*handler)(struct kvm *kvm, struct kvm_memory_slot *slot, > - struct kvm_mmu_page *root, gfn_t start, > - gfn_t end, unsigned long data)) > -{ Can you look into just marking these functions __always_inline? This should help the compiler change (*handler)(...) into a regular function call. Paolo