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([2001:b07:6468:f312:3473:41cf:8b30:f2e1]) by smtp.googlemail.com with ESMTPSA id l20sm111840324wrb.93.2019.01.07.08.39.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Jan 2019 08:39:37 -0800 (PST) Subject: Re: [PATCH 4/11] KVM/MMU: Introduce tlb flush with range list To: lantianyu1986@gmail.com Cc: kvm@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, paulus@ozlabs.org, hpa@zytor.com, kys@microsoft.com, kvmarm@lists.cs.columbia.edu, mpe@ellerman.id.au, x86@kernel.org, linux@armlinux.org.uk, michael.h.kelley@microsoft.com, mingo@redhat.com, benh@kernel.crashing.org, jhogan@kernel.org, linux-mips@vger.kernel.org, Lan Tianyu , marc.zyngier@arm.com, kvm-ppc@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, paul.burton@mips.com, vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org References: <20190104085405.40356-1-Tianyu.Lan@microsoft.com> <20190104085405.40356-5-Tianyu.Lan@microsoft.com> From: Paolo Bonzini Openpgp: preference=signencrypt Autocrypt: addr=pbonzini@redhat.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <20190104085405.40356-5-Tianyu.Lan@microsoft.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 04/01/19 09:53, lantianyu1986@gmail.com wrote: > struct kvm_mmu_page { > struct list_head link; > + > + /* > + * Tlb flush with range list uses struct kvm_mmu_page as list entry > + * and all list operations should be under protection of mmu_lock. > + */ > + struct list_head flush_link; > struct hlist_node hash_link; > bool unsync; > > @@ -443,6 +449,7 @@ struct kvm_mmu { Again, it would be nice not to grow the struct too much, though I understand that it's already relatively big (168 bytes). Can you at least make this an hlist, so that it only takes a single word? Paolo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 116B9C43444 for ; Mon, 7 Jan 2019 16:55:34 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8707C2087F for ; Mon, 7 Jan 2019 16:55:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lqTLqygV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8707C2087F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43YM2q5RbtzDqP3 for ; Tue, 8 Jan 2019 03:55:31 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2a00:1450:4864:20::441; helo=mail-wr1-x441.google.com; envelope-from=paolo.bonzini@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="lqTLqygV"; dkim-atps=neutral Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43YLhY0z2DzDqKD for ; Tue, 8 Jan 2019 03:39:41 +1100 (AEDT) Received: by mail-wr1-x441.google.com with SMTP id u4so1119974wrp.3 for ; Mon, 07 Jan 2019 08:39:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:openpgp:autocrypt:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=BteyKLlXLM8xWhmFfx8rEo5j5LsIt2xkNi4G5K7nq30=; b=lqTLqygV9eTX8EMiBHxdl51ZJjd30A0Q1vjaqc6FHVAA4EC6R2iIuVPrWNUNI/C8Bj JHXDexAWZrtz48IFC5MgGCtCTsxDNN0Y/fiUZ6euEBzaKyi2HxYgAQtZ5J91oQMcDAYY UyYZYQwNWIV5lVPu+VTyE0Cnc/0LnF6C18HXSD6g9KaCwtvrdTJiy7Wz3h+ZM9GKEVa9 kwazWvew+Xvo7jBwDWhyjMErEk7MS8Ix3KhsSjZK4hs1j8bSgSrwv/GLyIBJR6Xwi8xO I4RA5kLnSD8I8SoEt9prBpjr9NZW1+XkqP1h5k532Gre6Q4Zk1L11t3ux3FkObfJuiop moYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:openpgp :autocrypt:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=BteyKLlXLM8xWhmFfx8rEo5j5LsIt2xkNi4G5K7nq30=; b=jw9/DcjIFWVR5ZhCLa6kBHCCd1rmCc3BpWHA+rtLWVdIGxltDRX6TJLYNoraAoC5YU tLlYufcGiekQjVAX1d1E7etvR47NwMmItthoyUSz4pcA5SR8iCfTDhRhj0pbBOdVDjRS nhATFT8D99lVAIcpyBCY+ITXYUWlP1PztMwuSVINhfKKTx7D9mTpB05obLX4lsTPXIxl Q2gNf/fjBPKfj3e4bD/9fRnU9368+4QE8RE5mNPJcGTxAGbpFQq+vIjQ3xkm9c9LoyVz ig3hsIQuulNoKJW/Uht4mSoQMMwWog2orqzZ2glPMFWsxpdccPGIqshldZUPK1zOUAOc Ktxw== X-Gm-Message-State: AJcUukduJ+RCikZr2isCY1Oh1rvjYkbAxPp4aJonWn/sMTUZSpVn0emq QFA3fpgx0BBoXm/FaR5gVKd0D29tTpM= X-Google-Smtp-Source: ALg8bN5A4h2vi1OaJoHqPHyE7gYA/rx1zturjQ0g6r5Fu3Wm3FdHxIrKHDubTXPGhlOsjlB/7qNs7A== X-Received: by 2002:adf:b6a1:: with SMTP id j33mr52322444wre.55.1546879178246; Mon, 07 Jan 2019 08:39:38 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:3473:41cf:8b30:f2e1? ([2001:b07:6468:f312:3473:41cf:8b30:f2e1]) by smtp.googlemail.com with ESMTPSA id l20sm111840324wrb.93.2019.01.07.08.39.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Jan 2019 08:39:37 -0800 (PST) Subject: Re: [PATCH 4/11] KVM/MMU: Introduce tlb flush with range list To: lantianyu1986@gmail.com References: <20190104085405.40356-1-Tianyu.Lan@microsoft.com> <20190104085405.40356-5-Tianyu.Lan@microsoft.com> From: Paolo Bonzini Openpgp: preference=signencrypt Autocrypt: addr=pbonzini@redhat.com; keydata= mQHhBFRCcBIBDqDGsz4K0zZun3jh+U6Z9wNGLKQ0kSFyjN38gMqU1SfP+TUNQepFHb/Gc0E2 CxXPkIBTvYY+ZPkoTh5xF9oS1jqI8iRLzouzF8yXs3QjQIZ2SfuCxSVwlV65jotcjD2FTN04 hVopm9llFijNZpVIOGUTqzM4U55sdsCcZUluWM6x4HSOdw5F5Utxfp1wOjD/v92Lrax0hjiX DResHSt48q+8FrZzY+AUbkUS+Jm34qjswdrgsC5uxeVcLkBgWLmov2kMaMROT0YmFY6A3m1S P/kXmHDXxhe23gKb3dgwxUTpENDBGcfEzrzilWueOeUWiOcWuFOed/C3SyijBx3Av/lbCsHU Vx6pMycNTdzU1BuAroB+Y3mNEuW56Yd44jlInzG2UOwt9XjjdKkJZ1g0P9dwptwLEgTEd3Fo UdhAQyRXGYO8oROiuh+RZ1lXp6AQ4ZjoyH8WLfTLf5g1EKCTc4C1sy1vQSdzIRu3rBIjAvnC tGZADei1IExLqB3uzXKzZ1BZ+Z8hnt2og9hb7H0y8diYfEk2w3R7wEr+Ehk5NQsT2MPI2QBd wEv1/Aj1DgUHZAHzG1QN9S8wNWQ6K9DqHZTBnI1hUlkp22zCSHK/6FwUCuYp1zcAEQEAAbQj UGFvbG8gQm9uemluaSA8cGJvbnppbmlAcmVkaGF0LmNvbT6JAg0EEwECACMFAlRCcBICGwMH CwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRB+FRAMzTZpsbceDp9IIN6BIA0Ol7MoB15E 11kRz/ewzryFY54tQlMnd4xxfH8MTQ/mm9I482YoSwPMdcWFAKnUX6Yo30tbLiNB8hzaHeRj jx12K+ptqYbg+cevgOtbLAlL9kNgLLcsGqC2829jBCUTVeMSZDrzS97ole/YEez2qFpPnTV0 VrRWClWVfYh+JfzpXmgyhbkuwUxNFk421s4Ajp3d8nPPFUGgBG5HOxzkAm7xb1cjAuJ+oi/K CHfkuN+fLZl/u3E/fw7vvOESApLU5o0icVXeakfSz0LsygEnekDbxPnE5af/9FEkXJD5EoYG SEahaEtgNrR4qsyxyAGYgZlS70vkSSYJ+iT2rrwEiDlo31MzRo6Ba2FfHBSJ7lcYdPT7bbk9 AO3hlNMhNdUhoQv7M5HsnqZ6unvSHOKmReNaS9egAGdRN0/GPDWr9wroyJ65ZNQsHl9nXBqE AukZNr5oJO5vxrYiAuuTSd6UI/xFkjtkzltG3mw5ao2bBpk/V/YuePrJsnPFHG7NhizrxttB nTuOSCMo45pfHQ+XYd5K1+Cv/NzZFNWscm5htJ0HznY+oOsZvHTyGz3v91pn51dkRYN0otqr bQ4tlFFuVjArBZcapSIe6NV8C4cEiSS5AQ0EVEJxcwEIAK+nUrsUz3aP2aBjIrX3a1+C+39R nctpNIPcJjFJ/8WafRiwcEuLjbvJ/4kyM6K7pWUIQftl1P8Woxwb5nqL7zEFHh5I+hKS3haO 5pgco//V0tWBGMKinjqntpd4U4Dl299dMBZ4rRbPvmI8rr63sCENxTnHhTECyHdGFpqSzWzy 97rH68uqMpxbUeggVwYkYihZNd8xt1+lf7GWYNEO/QV8ar/qbRPG6PEfiPPHQd/sldGYavmd //o6TQLSJsvJyJDt7KxulnNT8Q2X/OdEuVQsRT5glLaSAeVAABcLAEnNgmCIGkX7TnQF8a6w gHGrZIR9ZCoKvDxAr7RP6mPeS9sAEQEAAYkDEgQYAQIACQUCVEJxcwIbAgEpCRB+FRAMzTZp scBdIAQZAQIABgUCVEJxcwAKCRC/+9JfeMeug/SlCACl7QjRnwHo/VzENWD9G2VpUOd9eRnS DZGQmPo6Mp3Wy8vL7snGFBfRseT9BevXBSkxvtOnUUV2YbyLmolAODqUGzUI8ViF339poOYN i6Ffek0E19IMQ5+CilqJJ2d5ZvRfaq70LA/Ly9jmIwwX4auvXrWl99/2wCkqnWZI+PAepkcX JRD4KY2fsvRi64/aoQmcxTiyyR7q3/52Sqd4EdMfj0niYJV0Xb9nt8G57Dp9v3Ox5JeWZKXS krFqy1qyEIypIrqcMbtXM7LSmiQ8aJRM4ZHYbvgjChJKR4PsKNQZQlMWGUJO4nVFSkrixc9R Z49uIqQK3b3ENB1QkcdMg9cxsB0Onih8zR+Wp1uDZXnz1ekto+EivLQLqvTjCCwLxxJafwKI bqhQ+hGR9jF34EFur5eWt9jJGloEPVv0GgQflQaE+rRGe+3f5ZDgRe5Y/EJVNhBhKcafcbP8 MzmLRh3UDnYDwaeguYmxuSlMdjFL96YfhRBXs8tUw6SO9jtCgBvoOIBDCxxAJjShY4KIvEpK b2hSNr8KxzelKKlSXMtB1bbHbQxiQcerAipYiChUHq1raFc3V0eOyCXK205rLtknJHhM5pfG 6taABGAMvJgm/MrVILIxvBuERj1FRgcgoXtiBmLEJSb7akcrRlqe3MoPTntSTNvNzAJmfWhd SvP0G1WDLolqvX0OtKMppI91AWVu72f1kolJg43wbaKpRJg1GMkKEI3H+jrrlTBrNl/8e20m TElPRDKzPiowmXeZqFSS1A6Azv0TJoo9as+lWF+P4zCXt40+Zhh5hdHO38EV7vFAVG3iuay6 7ToF8Uy7tgc3mdH98WQSmHcn/H5PFYk3xTP3KHB7b0FZPdFPQXBZb9+tJeZBi9gMqcjMch+Y R8dmTcQRQX14bm5nXlBF7VpSOPZMR392LY7wzAvRdhz7aeIUkdO7VelaspFk2nT7wOj1Y6uL nRxQlLkBDQRUQnHuAQgAx4dxXO6/Zun0eVYOnr5GRl76+2UrAAemVv9Yfn2PbDIbxXqLff7o yVJIkw4WdhQIIvvtu5zH24iYjmdfbg8iWpP7NqxUQRUZJEWbx2CRwkMHtOmzQiQ2tSLjKh/c HeyFH68xjeLcinR7jXMrHQK+UCEw6jqi1oeZzGvfmxarUmS0uRuffAb589AJW50kkQK9VD/9 QC2FJISSUDnRC0PawGSZDXhmvITJMdD4TjYrePYhSY4uuIV02v028TVAaYbIhxvDY0hUQE4r 8ZbGRLn52bEzaIPgl1p/adKfeOUeMReg/CkyzQpmyB1TSk8lDMxQzCYHXAzwnGi8WU9iuE1P 0wARAQABiQHzBBgBAgAJBQJUQnHuAhsMAAoJEH4VEAzNNmmxp1EOoJy0uZggJm7gZKeJ7iUp eX4eqUtqelUw6gU2daz2hE/jsxsTbC/w5piHmk1H1VWDKEM4bQBTuiJ0bfo55SWsUNN+c9hh IX+Y8LEe22izK3w7mRpvGcg+/ZRG4DEMHLP6JVsv5GMpoYwYOmHnplOzCXHvmdlW0i6SrMsB Dl9rw4AtIa6bRwWLim1lQ6EM3PWifPrWSUPrPcw4OLSwFk0CPqC4HYv/7ZnASVkR5EERFF3+ 6iaaVi5OgBd81F1TCvCX2BEyIDRZLJNvX3TOd5FEN+lIrl26xecz876SvcOb5SL5SKg9/rCB ufdPSjojkGFWGziHiFaYhbuI2E+NfWLJtd+ZvWAAV+O0d8vFFSvriy9enJ8kxJwhC0ECbSKF Y+W1eTIhMD3aeAKY90drozWEyHhENf4l/V+Ja5vOnW+gCDQkGt2Y1lJAPPSIqZKvHzGShdh8 DduC0U3xYkfbGAUvbxeepjgzp0uEnBXfPTy09JGpgWbg0w91GyfT/ujKaGd4vxG2Ei+MMNDm S1SMx7wu0evvQ5kT9NPzyq8R2GIhVSiAd2jioGuTjX6AZCFv3ToO53DliFMkVTecLptsXaes uUHgL9dKIfvpm+rNXRn9wAwGjk0X/A== Message-ID: <2c6f7a11-b406-d4f1-c934-e6dedf5b07fd@redhat.com> Date: Mon, 7 Jan 2019 17:39:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <20190104085405.40356-5-Tianyu.Lan@microsoft.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, will.deacon@arm.com, linux-mips@vger.kernel.org, hpa@zytor.com, kys@microsoft.com, kvmarm@lists.cs.columbia.edu, x86@kernel.org, linux@armlinux.org.uk, michael.h.kelley@microsoft.com, mingo@redhat.com, catalin.marinas@arm.com, jhogan@kernel.org, Lan Tianyu , marc.zyngier@arm.com, kvm-ppc@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, paul.burton@mips.com, vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 04/01/19 09:53, lantianyu1986@gmail.com wrote: > struct kvm_mmu_page { > struct list_head link; > + > + /* > + * Tlb flush with range list uses struct kvm_mmu_page as list entry > + * and all list operations should be under protection of mmu_lock. > + */ > + struct list_head flush_link; > struct hlist_node hash_link; > bool unsync; > > @@ -443,6 +449,7 @@ struct kvm_mmu { Again, it would be nice not to grow the struct too much, though I understand that it's already relatively big (168 bytes). Can you at least make this an hlist, so that it only takes a single word? Paolo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAB3BC43387 for ; Mon, 7 Jan 2019 16:39:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7ADB72147C for ; Mon, 7 Jan 2019 16:39:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lEll3auu"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lqTLqygV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ADB72147C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hgx49SIDU+vy4iJflF7OpHkXX79pmoWAKhDmniSqnJg=; b=lEll3auuTAlAIs GX2Zj9sc7kqjiaM1uu+/VOU29OgIdOxa/lkhrsYH47C8r8+KfBMnOg0RztrG9SjCVKgAduhYNkwV5 ZP8d1lyEHp/OrKdk9rrb5PW35a4hR8QJMock5zavHu1xJw7sJnYCJPRtznUD0wD0+RQ7kPiUBw9qj KskC/DC5p3B00Q86LZ75q7hfGjaD9WEoR4XRsapsC+vEFQvjN1NpmINr0Q8HLVfo/yH1/LS3uW9jo hQzPdxMoB1An2InqhoJxFjhE8AIQ4qB8Lh/MP/pO/HH8onheIvGkvlT6kWI3OeECsQaN6l4fkeURc OcPJAx4vdaE7VroCAoBA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1ggXwE-0000wl-NC; Mon, 07 Jan 2019 16:39:42 +0000 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1ggXwC-0000wM-0f for linux-arm-kernel@lists.infradead.org; Mon, 07 Jan 2019 16:39:41 +0000 Received: by mail-wr1-x444.google.com with SMTP id s12so1108132wrt.4 for ; Mon, 07 Jan 2019 08:39:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:openpgp:autocrypt:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=BteyKLlXLM8xWhmFfx8rEo5j5LsIt2xkNi4G5K7nq30=; b=lqTLqygV9eTX8EMiBHxdl51ZJjd30A0Q1vjaqc6FHVAA4EC6R2iIuVPrWNUNI/C8Bj JHXDexAWZrtz48IFC5MgGCtCTsxDNN0Y/fiUZ6euEBzaKyi2HxYgAQtZ5J91oQMcDAYY UyYZYQwNWIV5lVPu+VTyE0Cnc/0LnF6C18HXSD6g9KaCwtvrdTJiy7Wz3h+ZM9GKEVa9 kwazWvew+Xvo7jBwDWhyjMErEk7MS8Ix3KhsSjZK4hs1j8bSgSrwv/GLyIBJR6Xwi8xO I4RA5kLnSD8I8SoEt9prBpjr9NZW1+XkqP1h5k532Gre6Q4Zk1L11t3ux3FkObfJuiop moYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:openpgp :autocrypt:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=BteyKLlXLM8xWhmFfx8rEo5j5LsIt2xkNi4G5K7nq30=; b=lqfVH4HQrLeP24BVt+lXHs9W3+6qvMfCs9ygJuhy38gjoNMwJ4GjPsxQ1ydl4RSFZv w/6LYjdItXj05R9nJXt5Qn0GW6tmcIh4eqeiOMz8mKm4rauNHFRHtU8i4fQUvnSl2DjA qB6GqJBB97ZSn3pbXtvzq/zlClGANseWlc+7Dkd+SSEDlJj5aGIPKLk8hbeAvjFX2SNf Q+wjjLqENllaN+mH9tg4Hk3kvwdxZDB4nHvHKdfwCjw12Xu2bZoVVcXlgTTZeIyyAIjm j2bnt4rb+GY9PRgOXH3bmaLnlf/E/E11I7oJ0Nkoa+gK4gxj71b6W0BUNcJl01NhyQON vT6w== X-Gm-Message-State: AJcUukfOP9dC+amyywnJI4g3WQpG5cJHj5CXxydmUFyVnevrun9X13th 0ZlsTrPAvwVMewS+/poi0dA= X-Google-Smtp-Source: ALg8bN5A4h2vi1OaJoHqPHyE7gYA/rx1zturjQ0g6r5Fu3Wm3FdHxIrKHDubTXPGhlOsjlB/7qNs7A== X-Received: by 2002:adf:b6a1:: with SMTP id j33mr52322444wre.55.1546879178246; Mon, 07 Jan 2019 08:39:38 -0800 (PST) Received: from ?IPv6:2001:b07:6468:f312:3473:41cf:8b30:f2e1? ([2001:b07:6468:f312:3473:41cf:8b30:f2e1]) by smtp.googlemail.com with ESMTPSA id l20sm111840324wrb.93.2019.01.07.08.39.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Jan 2019 08:39:37 -0800 (PST) Subject: Re: [PATCH 4/11] KVM/MMU: Introduce tlb flush with range list To: lantianyu1986@gmail.com References: <20190104085405.40356-1-Tianyu.Lan@microsoft.com> <20190104085405.40356-5-Tianyu.Lan@microsoft.com> From: Paolo Bonzini Openpgp: preference=signencrypt Autocrypt: addr=pbonzini@redhat.com; keydata= mQHhBFRCcBIBDqDGsz4K0zZun3jh+U6Z9wNGLKQ0kSFyjN38gMqU1SfP+TUNQepFHb/Gc0E2 CxXPkIBTvYY+ZPkoTh5xF9oS1jqI8iRLzouzF8yXs3QjQIZ2SfuCxSVwlV65jotcjD2FTN04 hVopm9llFijNZpVIOGUTqzM4U55sdsCcZUluWM6x4HSOdw5F5Utxfp1wOjD/v92Lrax0hjiX DResHSt48q+8FrZzY+AUbkUS+Jm34qjswdrgsC5uxeVcLkBgWLmov2kMaMROT0YmFY6A3m1S P/kXmHDXxhe23gKb3dgwxUTpENDBGcfEzrzilWueOeUWiOcWuFOed/C3SyijBx3Av/lbCsHU Vx6pMycNTdzU1BuAroB+Y3mNEuW56Yd44jlInzG2UOwt9XjjdKkJZ1g0P9dwptwLEgTEd3Fo UdhAQyRXGYO8oROiuh+RZ1lXp6AQ4ZjoyH8WLfTLf5g1EKCTc4C1sy1vQSdzIRu3rBIjAvnC tGZADei1IExLqB3uzXKzZ1BZ+Z8hnt2og9hb7H0y8diYfEk2w3R7wEr+Ehk5NQsT2MPI2QBd wEv1/Aj1DgUHZAHzG1QN9S8wNWQ6K9DqHZTBnI1hUlkp22zCSHK/6FwUCuYp1zcAEQEAAbQj UGFvbG8gQm9uemluaSA8cGJvbnppbmlAcmVkaGF0LmNvbT6JAg0EEwECACMFAlRCcBICGwMH CwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRB+FRAMzTZpsbceDp9IIN6BIA0Ol7MoB15E 11kRz/ewzryFY54tQlMnd4xxfH8MTQ/mm9I482YoSwPMdcWFAKnUX6Yo30tbLiNB8hzaHeRj jx12K+ptqYbg+cevgOtbLAlL9kNgLLcsGqC2829jBCUTVeMSZDrzS97ole/YEez2qFpPnTV0 VrRWClWVfYh+JfzpXmgyhbkuwUxNFk421s4Ajp3d8nPPFUGgBG5HOxzkAm7xb1cjAuJ+oi/K CHfkuN+fLZl/u3E/fw7vvOESApLU5o0icVXeakfSz0LsygEnekDbxPnE5af/9FEkXJD5EoYG SEahaEtgNrR4qsyxyAGYgZlS70vkSSYJ+iT2rrwEiDlo31MzRo6Ba2FfHBSJ7lcYdPT7bbk9 AO3hlNMhNdUhoQv7M5HsnqZ6unvSHOKmReNaS9egAGdRN0/GPDWr9wroyJ65ZNQsHl9nXBqE AukZNr5oJO5vxrYiAuuTSd6UI/xFkjtkzltG3mw5ao2bBpk/V/YuePrJsnPFHG7NhizrxttB nTuOSCMo45pfHQ+XYd5K1+Cv/NzZFNWscm5htJ0HznY+oOsZvHTyGz3v91pn51dkRYN0otqr bQ4tlFFuVjArBZcapSIe6NV8C4cEiSS5AQ0EVEJxcwEIAK+nUrsUz3aP2aBjIrX3a1+C+39R nctpNIPcJjFJ/8WafRiwcEuLjbvJ/4kyM6K7pWUIQftl1P8Woxwb5nqL7zEFHh5I+hKS3haO 5pgco//V0tWBGMKinjqntpd4U4Dl299dMBZ4rRbPvmI8rr63sCENxTnHhTECyHdGFpqSzWzy 97rH68uqMpxbUeggVwYkYihZNd8xt1+lf7GWYNEO/QV8ar/qbRPG6PEfiPPHQd/sldGYavmd //o6TQLSJsvJyJDt7KxulnNT8Q2X/OdEuVQsRT5glLaSAeVAABcLAEnNgmCIGkX7TnQF8a6w gHGrZIR9ZCoKvDxAr7RP6mPeS9sAEQEAAYkDEgQYAQIACQUCVEJxcwIbAgEpCRB+FRAMzTZp scBdIAQZAQIABgUCVEJxcwAKCRC/+9JfeMeug/SlCACl7QjRnwHo/VzENWD9G2VpUOd9eRnS DZGQmPo6Mp3Wy8vL7snGFBfRseT9BevXBSkxvtOnUUV2YbyLmolAODqUGzUI8ViF339poOYN i6Ffek0E19IMQ5+CilqJJ2d5ZvRfaq70LA/Ly9jmIwwX4auvXrWl99/2wCkqnWZI+PAepkcX JRD4KY2fsvRi64/aoQmcxTiyyR7q3/52Sqd4EdMfj0niYJV0Xb9nt8G57Dp9v3Ox5JeWZKXS krFqy1qyEIypIrqcMbtXM7LSmiQ8aJRM4ZHYbvgjChJKR4PsKNQZQlMWGUJO4nVFSkrixc9R Z49uIqQK3b3ENB1QkcdMg9cxsB0Onih8zR+Wp1uDZXnz1ekto+EivLQLqvTjCCwLxxJafwKI bqhQ+hGR9jF34EFur5eWt9jJGloEPVv0GgQflQaE+rRGe+3f5ZDgRe5Y/EJVNhBhKcafcbP8 MzmLRh3UDnYDwaeguYmxuSlMdjFL96YfhRBXs8tUw6SO9jtCgBvoOIBDCxxAJjShY4KIvEpK b2hSNr8KxzelKKlSXMtB1bbHbQxiQcerAipYiChUHq1raFc3V0eOyCXK205rLtknJHhM5pfG 6taABGAMvJgm/MrVILIxvBuERj1FRgcgoXtiBmLEJSb7akcrRlqe3MoPTntSTNvNzAJmfWhd SvP0G1WDLolqvX0OtKMppI91AWVu72f1kolJg43wbaKpRJg1GMkKEI3H+jrrlTBrNl/8e20m TElPRDKzPiowmXeZqFSS1A6Azv0TJoo9as+lWF+P4zCXt40+Zhh5hdHO38EV7vFAVG3iuay6 7ToF8Uy7tgc3mdH98WQSmHcn/H5PFYk3xTP3KHB7b0FZPdFPQXBZb9+tJeZBi9gMqcjMch+Y R8dmTcQRQX14bm5nXlBF7VpSOPZMR392LY7wzAvRdhz7aeIUkdO7VelaspFk2nT7wOj1Y6uL nRxQlLkBDQRUQnHuAQgAx4dxXO6/Zun0eVYOnr5GRl76+2UrAAemVv9Yfn2PbDIbxXqLff7o yVJIkw4WdhQIIvvtu5zH24iYjmdfbg8iWpP7NqxUQRUZJEWbx2CRwkMHtOmzQiQ2tSLjKh/c HeyFH68xjeLcinR7jXMrHQK+UCEw6jqi1oeZzGvfmxarUmS0uRuffAb589AJW50kkQK9VD/9 QC2FJISSUDnRC0PawGSZDXhmvITJMdD4TjYrePYhSY4uuIV02v028TVAaYbIhxvDY0hUQE4r 8ZbGRLn52bEzaIPgl1p/adKfeOUeMReg/CkyzQpmyB1TSk8lDMxQzCYHXAzwnGi8WU9iuE1P 0wARAQABiQHzBBgBAgAJBQJUQnHuAhsMAAoJEH4VEAzNNmmxp1EOoJy0uZggJm7gZKeJ7iUp eX4eqUtqelUw6gU2daz2hE/jsxsTbC/w5piHmk1H1VWDKEM4bQBTuiJ0bfo55SWsUNN+c9hh IX+Y8LEe22izK3w7mRpvGcg+/ZRG4DEMHLP6JVsv5GMpoYwYOmHnplOzCXHvmdlW0i6SrMsB Dl9rw4AtIa6bRwWLim1lQ6EM3PWifPrWSUPrPcw4OLSwFk0CPqC4HYv/7ZnASVkR5EERFF3+ 6iaaVi5OgBd81F1TCvCX2BEyIDRZLJNvX3TOd5FEN+lIrl26xecz876SvcOb5SL5SKg9/rCB ufdPSjojkGFWGziHiFaYhbuI2E+NfWLJtd+ZvWAAV+O0d8vFFSvriy9enJ8kxJwhC0ECbSKF Y+W1eTIhMD3aeAKY90drozWEyHhENf4l/V+Ja5vOnW+gCDQkGt2Y1lJAPPSIqZKvHzGShdh8 DduC0U3xYkfbGAUvbxeepjgzp0uEnBXfPTy09JGpgWbg0w91GyfT/ujKaGd4vxG2Ei+MMNDm S1SMx7wu0evvQ5kT9NPzyq8R2GIhVSiAd2jioGuTjX6AZCFv3ToO53DliFMkVTecLptsXaes uUHgL9dKIfvpm+rNXRn9wAwGjk0X/A== Message-ID: <2c6f7a11-b406-d4f1-c934-e6dedf5b07fd@redhat.com> Date: Mon, 7 Jan 2019 17:39:33 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <20190104085405.40356-5-Tianyu.Lan@microsoft.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190107_083940_089497_937A6C18 X-CRM114-Status: GOOD ( 13.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, benh@kernel.crashing.org, will.deacon@arm.com, linux-mips@vger.kernel.org, paulus@ozlabs.org, hpa@zytor.com, kys@microsoft.com, kvmarm@lists.cs.columbia.edu, mpe@ellerman.id.au, x86@kernel.org, linux@armlinux.org.uk, michael.h.kelley@microsoft.com, mingo@redhat.com, catalin.marinas@arm.com, jhogan@kernel.org, Lan Tianyu , marc.zyngier@arm.com, kvm-ppc@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, paul.burton@mips.com, vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 04/01/19 09:53, lantianyu1986@gmail.com wrote: > struct kvm_mmu_page { > struct list_head link; > + > + /* > + * Tlb flush with range list uses struct kvm_mmu_page as list entry > + * and all list operations should be under protection of mmu_lock. > + */ > + struct list_head flush_link; > struct hlist_node hash_link; > bool unsync; > > @@ -443,6 +449,7 @@ struct kvm_mmu { Again, it would be nice not to grow the struct too much, though I understand that it's already relatively big (168 bytes). Can you at least make this an hlist, so that it only takes a single word? Paolo _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Date: Mon, 07 Jan 2019 16:39:33 +0000 Subject: Re: [PATCH 4/11] KVM/MMU: Introduce tlb flush with range list Message-Id: <2c6f7a11-b406-d4f1-c934-e6dedf5b07fd@redhat.com> List-Id: References: <20190104085405.40356-1-Tianyu.Lan@microsoft.com> <20190104085405.40356-5-Tianyu.Lan@microsoft.com> In-Reply-To: <20190104085405.40356-5-Tianyu.Lan@microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lantianyu1986@gmail.com Cc: kvm@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, paulus@ozlabs.org, hpa@zytor.com, kys@microsoft.com, kvmarm@lists.cs.columbia.edu, mpe@ellerman.id.au, x86@kernel.org, linux@armlinux.org.uk, michael.h.kelley@microsoft.com, mingo@redhat.com, benh@kernel.crashing.org, jhogan@kernel.org, linux-mips@vger.kernel.org, Lan Tianyu , marc.zyngier@arm.com, kvm-ppc@vger.kernel.org, bp@alien8.de, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, ralf@linux-mips.org, paul.burton@mips.com, vkuznets@redhat.com, linuxppc-dev@lists.ozlabs.org On 04/01/19 09:53, lantianyu1986@gmail.com wrote: > struct kvm_mmu_page { > struct list_head link; > + > + /* > + * Tlb flush with range list uses struct kvm_mmu_page as list entry > + * and all list operations should be under protection of mmu_lock. > + */ > + struct list_head flush_link; > struct hlist_node hash_link; > bool unsync; > > @@ -443,6 +449,7 @@ struct kvm_mmu { Again, it would be nice not to grow the struct too much, though I understand that it's already relatively big (168 bytes). Can you at least make this an hlist, so that it only takes a single word? Paolo