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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 69093EB64DA for ; Wed, 19 Jul 2023 07:58:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GN1ojvhTzAUS06Ko4tvLUrVX6VS7hB/Rbp7QpU4Mapo=; b=hDLFzol4YjBOYT LDzuLIv0vpK6BbwkuRSn/6mZZy2CSdXO1lGV2nwZAFy9mJGoChT34f9PgCNwoZoDFg3stWac7VqXg x0NMta+YEcmwf+jfAsLJVnKtJXaaxPq/syY2ZYJNbScmcnp61zgj2L5Xy/6MS7oolPnmBsDVpzwzK +RCaerkEXVHCZ3xPdz9815QcjL4C1rATE4qG7I70uYEul9Sd8y1npxj48p64a9YhqZvXE9uilRWAs RQ5bRzr0u1VFbQlDbqWcYZEFX932bFaQzqsbLroDH62DnSlibH3/oPjPHttV7VKhl61Gh8FC3aSIQ NUPMBdo8C7lGE35nt8Kg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qM24L-006AlT-0B; Wed, 19 Jul 2023 07:57:57 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qM24J-006AkR-1S for linux-arm-kernel@bombadil.infradead.org; Wed, 19 Jul 2023 07:57:55 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:Content-Type :In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date:Message-ID: Sender:Reply-To:Content-ID:Content-Description; bh=48OfsAs+5NoliWawjnL6mrqynpB+mYbsWNJ2N0teO4w=; b=DOIH9Ci2k+jwmoCx0qDbAQBt0m T5IblWLpL0uAcgXuzpyWfUJze6MMq/DGhI5PfUintg0SuVfiqGPU0pr8KMLDi+Zy7G5doz5nU43CN Y6G7VXmpitG3WeZs0JraEWatdluPiDfbNJTpC3l2ibqxNHTWK/CdPSUE/Av6WvfkjAKOqDbCUYcNk o9GUndwksU67A3cmOLbOiUmhvsUBWKwL6Cj7pgaVKnsATaWM1TLwbo3Q0NpuoVOL1HRrMr5VuM+Pp /x4pfI4ZdPlABz54E5sn6oOB62Ygrr0NydL6o17HpDnYG4zq6W6vSUpA06WslnD4R06P/zinwC0Mr z5h2rxZA==; Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by desiato.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qLgH4-00BJZr-2R for linux-arm-kernel@lists.infradead.org; Tue, 18 Jul 2023 08:41:40 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689669570; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=48OfsAs+5NoliWawjnL6mrqynpB+mYbsWNJ2N0teO4w=; b=hyLtOKl7nySEjSn3hB2vNwId0IMXZME/uJkSGXMT6PAB4j4W6KzrCoCw+8EgOzmuGZZyGn QMHTi2CX5n6ryhBNCw77ZuTr5OB2PTmFvCI3n/76J0KUnUw/wKhMrWzX8+l59hwTd8emNU HmATPPUfL4BuIykmr2ua14QkUbv7bcE= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689669697; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=48OfsAs+5NoliWawjnL6mrqynpB+mYbsWNJ2N0teO4w=; b=YydlyhjPSUWYcWtB7DLthijS5J5uojYKeNGWvmklOFNh7tHfRVg3l3Y0XEsK6wAfwDShOw FxP9sbRLkT7O7uNkAuuMJ/tE4jQ5rhPzhTmgaw/XiGOePuXX4t7ggyOZ1zSp198iFEHTM3 F4BRLYSxRGJ1pNNI8Zo2MjAMc2HlnMw= Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-19-Xa63KGHVOY-VJOsycFtU2g-1; Tue, 18 Jul 2023 04:39:26 -0400 X-MC-Unique: Xa63KGHVOY-VJOsycFtU2g-1 Received: by mail-pg1-f198.google.com with SMTP id 41be03b00d2f7-543c2538071so743622a12.1 for ; Tue, 18 Jul 2023 01:39:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689669566; x=1692261566; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=48OfsAs+5NoliWawjnL6mrqynpB+mYbsWNJ2N0teO4w=; b=D6auAxXhcjhwm3ed7UvU0cXZB66mSMwJo+wogDnYQ3RVTwU7ASO2EmvSs9EhcFOluM SgUNHrQeE2BoBkhZpr6unXtGgvn4SW58ZlYWGQNPxpbTQ3AyckIAALU75RoRnJ/XpJBc ZGT24q6VGz/YJddXVFkRltih218hLkTpUaKzVTPzrGpCPvjD1oLyL5XdW7FBzyBdOfk3 jHsNBuZ1kqOXrniVQ32JU+Zqxm//WCp0UoME2MQLVdQAvTSvGQLedfdyi/TVLF4nKrVm UpR0Q/AJM1GTjMvoe5Gn/9PD6cymEd1F9HcJfY5m9fR97f0sAK4zpAKe0G9lhvXJ/2ZD iW5w== X-Gm-Message-State: ABy/qLbZF3GNNn4AxbbnzLpr/scFVprxnPOSHS78iKjdew7BM8SsRR8R FiYQ4vQq9fi1DGbJzkiyL4mCRv6UVucGUa9biyX5rCYtUUxJq24sZLfrdi3A0qCCbDWLrdIryOo 8JmXBLmkuXd4+pXFqX3e6gP/zs0FIpYtObTg= X-Received: by 2002:a05:6a21:338e:b0:123:149b:a34f with SMTP id yy14-20020a056a21338e00b00123149ba34fmr11522171pzb.1.1689669565980; Tue, 18 Jul 2023 01:39:25 -0700 (PDT) X-Google-Smtp-Source: APBJJlFn6VTd9NoeqQyeoZ4mz9lw2meP9X5GlAOs2CSTs0WWxzf4uI+E1rzir2tOn6PnHRRKr5e2eQ== X-Received: by 2002:a05:6a21:338e:b0:123:149b:a34f with SMTP id yy14-20020a056a21338e00b00123149ba34fmr11522141pzb.1.1689669565640; Tue, 18 Jul 2023 01:39:25 -0700 (PDT) Received: from [10.66.61.39] ([43.228.180.230]) by smtp.gmail.com with ESMTPSA id p9-20020a639509000000b0055bbc746272sm1140176pgd.17.2023.07.18.01.39.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Jul 2023 01:39:25 -0700 (PDT) Message-ID: <148fecc6-7ad5-1039-4466-7c1e5a9df911@redhat.com> Date: Tue, 18 Jul 2023 16:39:20 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Subject: Re: [PATCH v6 07/11] KVM: arm64: Define kvm_tlb_flush_vmid_range() 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 , Colton Lewis , David Matlack , 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, Gavin Shan References: <20230715005405.3689586-1-rananta@google.com> <20230715005405.3689586-8-rananta@google.com> From: Shaoqin Huang In-Reply-To: <20230715005405.3689586-8-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-20230718_094139_068572_7D7B20E9 X-CRM114-Status: GOOD ( 17.94 ) 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 7/15/23 08:54, Raghavendra Rao Ananta wrote: > Implement the helper kvm_tlb_flush_vmid_range() that acts > as a wrapper for range-based TLB invalidations. For the > given VMID, use the range-based TLBI instructions to do > the job or fallback to invalidating all the TLB entries. > > Signed-off-by: Raghavendra Rao Ananta > Reviewed-by: Gavin Shan Reviewed-by: Shaoqin Huang > --- > arch/arm64/include/asm/kvm_pgtable.h | 10 ++++++++++ > arch/arm64/kvm/hyp/pgtable.c | 20 ++++++++++++++++++++ > 2 files changed, 30 insertions(+) > > diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h > index 8294a9a7e566..5e8b1ff07854 100644 > --- a/arch/arm64/include/asm/kvm_pgtable.h > +++ b/arch/arm64/include/asm/kvm_pgtable.h > @@ -754,4 +754,14 @@ enum kvm_pgtable_prot kvm_pgtable_stage2_pte_prot(kvm_pte_t pte); > * kvm_pgtable_prot format. > */ > enum kvm_pgtable_prot kvm_pgtable_hyp_pte_prot(kvm_pte_t pte); > + > +/** > + * kvm_tlb_flush_vmid_range() - Invalidate/flush a range of TLB entries > + * > + * @mmu: Stage-2 KVM MMU struct > + * @addr: The base Intermediate physical address from which to invalidate > + * @size: Size of the range from the base to invalidate > + */ > +void kvm_tlb_flush_vmid_range(struct kvm_s2_mmu *mmu, > + phys_addr_t addr, size_t size); > #endif /* __ARM64_KVM_PGTABLE_H__ */ > diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c > index aa740a974e02..5d14d5d5819a 100644 > --- a/arch/arm64/kvm/hyp/pgtable.c > +++ b/arch/arm64/kvm/hyp/pgtable.c > @@ -670,6 +670,26 @@ static bool stage2_has_fwb(struct kvm_pgtable *pgt) > return !(pgt->flags & KVM_PGTABLE_S2_NOFWB); > } > > +void kvm_tlb_flush_vmid_range(struct kvm_s2_mmu *mmu, > + phys_addr_t addr, size_t size) > +{ > + unsigned long pages, inval_pages; > + > + if (!system_supports_tlb_range()) { > + kvm_call_hyp(__kvm_tlb_flush_vmid, mmu); > + return; > + } > + > + pages = size >> PAGE_SHIFT; > + while (pages > 0) { > + inval_pages = min(pages, MAX_TLBI_RANGE_PAGES); > + kvm_call_hyp(__kvm_tlb_flush_vmid_range, mmu, addr, inval_pages); > + > + addr += inval_pages << PAGE_SHIFT; > + pages -= inval_pages; > + } > +} > + > #define KVM_S2_MEMATTR(pgt, attr) PAGE_S2_MEMATTR(attr, stage2_has_fwb(pgt)) > > static int stage2_set_prot_attr(struct kvm_pgtable *pgt, enum kvm_pgtable_prot prot, -- Shaoqin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel