From patchwork Sat Feb 2 01:38:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 1035300 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=kvm-ppc-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Qo2D+LA2"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43rxTW5SG5z9sNf for ; Sat, 2 Feb 2019 12:39:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727674AbfBBBjE (ORCPT ); Fri, 1 Feb 2019 20:39:04 -0500 Received: from mail-pf1-f193.google.com ([209.85.210.193]:45936 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727688AbfBBBjC (ORCPT ); Fri, 1 Feb 2019 20:39:02 -0500 Received: by mail-pf1-f193.google.com with SMTP id g62so4074594pfd.12; Fri, 01 Feb 2019 17:39:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=xNQ01b3YQcncQcyZ7/8o/Bl5YsleBiAszwwH1EpMGyk=; b=Qo2D+LA2DH0Xd98ZgKOyGosKOaLUNvRcl8albFhAHWIgW4SuiFPDTPXliCZhxwU9lo KuuHRNm0DC2NEuc+wOFl8VdvU8buZBjimk+zdX1acGwI0ZOAf1OgyamVONKBCjgRenKp GxbK6DvdmvX4NKNFXt2+kraiR1ZDN4arbq3lKp/4zhu+A2145+lTvVbUti6VrRcOGkoV a4QDX0M3aYO8xuOOntVq9CTNfb+ooOC9th262XOMJZlEEjaJSWChR0+LEBoFacmJsJxV tGoUdzOf2NlbeOOo8kF7j5yZgsQg6E/LAjE4U2dpcaLJgFYeA3umIkUnyJFgteWFffI2 Rlfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=xNQ01b3YQcncQcyZ7/8o/Bl5YsleBiAszwwH1EpMGyk=; b=oLEBR2rZL4VFLI0Z4NndoZXDTQfpkFRo15vxNXVM0X31Te3u0mIGfACe/aURiI6Jj2 fumrGwdhlI6FUF+2HTqqvJppyjk+0ks4iogfKwN6PIBrNJa9bST9/1CtlpUXQk0b8+Bv 8X+XMlZF16nm0iVVfn23QRHw+Zg0Top/KCbUTal9abc6Q42B1a7SPO1Ux1h/ngvBsJ/D fG1QFo7Cn/YjvpCR/oegaXAEjMh4n74+i3CqElAVmCAGBUJyWs0S9s4I9RzsjOJuEzGC CUPr0Z9XtFXBxijqFP7JcIjAekFn2GJJ9Oebmh8d7yzWrS+ywJp3pE1KfIXZgDagret1 aBbw== X-Gm-Message-State: AJcUukdKHmnJ2zN2by6AsOLfLI/qNbT6xo3H8SBdU91p1Ja7sOKCLPZI IWBjru+BDwO3FbYBixl4pv0= X-Google-Smtp-Source: ALg8bN52qHZIAftboT3KzOVgAevCJ9IrwTwxVL8yULXyNRr/rVn5RkQZ3gqqqU8ZvuoQTn18Iq1NIQ== X-Received: by 2002:a62:1e87:: with SMTP id e129mr41458755pfe.221.1549071542091; Fri, 01 Feb 2019 17:39:02 -0800 (PST) Received: from localhost.corp.microsoft.com ([167.220.255.67]) by smtp.googlemail.com with ESMTPSA id d3sm9183425pgl.64.2019.02.01.17.38.54 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 01 Feb 2019 17:39:01 -0800 (PST) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com Cc: Lan Tianyu , christoffer.dall@arm.com, marc.zyngier@arm.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, jhogan@kernel.org, ralf@linux-mips.org, paul.burton@mips.com, paulus@ozlabs.org, benh@kernel.crashing.org, mpe@ellerman.id.au, pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, michael.h.kelley@microsoft.com, kys@microsoft.com, vkuznets@redhat.com Subject: [PATCH V2 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func() Date: Sat, 2 Feb 2019 09:38:18 +0800 Message-Id: <20190202013825.51261-3-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20190202013825.51261-1-Tianyu.Lan@microsoft.com> References: <20190202013825.51261-1-Tianyu.Lan@microsoft.com> To: unlisted-recipients:; (no To-header on input) Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org From: Lan Tianyu Populate ranges on the flush list into struct hv_guest_mapping_flush_list when flush list is available in the struct kvm_tlb_range. Signed-off-by: Lan Tianyu --- Change since v1: Make flush list as a "hlist" instead of a "list" in order to keep struct kvm_mmu_page size. arch/x86/include/asm/kvm_host.h | 7 +++++++ arch/x86/kvm/vmx/vmx.c | 18 ++++++++++++++++-- 2 files changed, 23 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 49f449f56434..4a3d3e58fe0a 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -317,6 +317,12 @@ struct kvm_rmap_head { 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 hlist_node flush_link; struct hlist_node hash_link; bool unsync; @@ -443,6 +449,7 @@ struct kvm_mmu { struct kvm_tlb_range { u64 start_gfn; u64 pages; + struct hlist_head *flush_list; }; enum pmc_type { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 9d954b4adce3..6452d0efd2cc 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -427,9 +427,23 @@ int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush, void *data) { struct kvm_tlb_range *range = data; + struct kvm_mmu_page *sp; - return hyperv_fill_flush_guest_mapping_list(flush, 0, range->start_gfn, - range->pages); + if (!range->flush_list) { + return hyperv_fill_flush_guest_mapping_list(flush, + 0, range->start_gfn, range->pages); + } else { + int offset = 0; + + hlist_for_each_entry(sp, range->flush_list, flush_link) { + int pages = KVM_PAGES_PER_HPAGE(sp->role.level); + + offset = hyperv_fill_flush_guest_mapping_list(flush, + offset, sp->gfn, pages); + } + + return offset; + } } static inline int __hv_remote_flush_tlb_with_range(struct kvm *kvm,