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=-8.7 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT 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 8A225C04EBF for ; Thu, 6 Dec 2018 13:22:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 44A6220892 for ; Thu, 6 Dec 2018 13:22:02 +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="ouQOyufS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 44A6220892 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729760AbeLFNWB (ORCPT ); Thu, 6 Dec 2018 08:22:01 -0500 Received: from mail-pg1-f195.google.com ([209.85.215.195]:34167 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728648AbeLFNV7 (ORCPT ); Thu, 6 Dec 2018 08:21:59 -0500 Received: by mail-pg1-f195.google.com with SMTP id 17so166957pgg.1; Thu, 06 Dec 2018 05:21:58 -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=FifTGwX83EQ8+OEfJfdERX2ACrXZsduv44eJgHUH8jk=; b=ouQOyufSH1/uGjxiNK638Mg4OcgdV54+aK+ERvM9nuExiRVwlTnqiudVXzDF0hTPrM k5NzMIrpAxJuZq7GrSPO/e43Slpbs3AKzR7xiiNBOCFKHxRZPklchjWhyc2xpXShjz6w mY6WyhU5r39tlUPeSie4e/oiy09f0rti5h6M//m450EBt5M95D1Ms25b8W/FiuQXHwIV SR2envrTDTAFCluFNaxS6CXxHsqS12dWFc5nbwpE6Y9c+KqBvfln/JhX9h/fVksa4A6/ DoegjgMPNn3sINWU37pGFc4UKOVj7fq3P8u4r6DlhQVTOtUYxhoL4Thigr4Hu0dIGTBC cdvw== 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=FifTGwX83EQ8+OEfJfdERX2ACrXZsduv44eJgHUH8jk=; b=FmM0hIsRKECdDFZNeK9sBzHjoj2IIZG1vz1RyP0I0QN7HsWCLSkphUoNoHIjHUyrOD 7zantdRCdeRTF/hMy8Ddm8UPYoYM6FUedGQAMU4gF/+Ehtah/qoPqkFQ9Oo4av64DKbU sYiJKxySQB8Z8l8c7L6xl5Vzi0bi4/4FOPa4aqFods6QAPMrOVuYqCfscv/390CzNRQA FQyyyAiT5W9we3nk6SmbGy+dze7FzdJ56FZWEcL5ATX4flNjVAvcMNE2erkXENfTALl4 aHFA5n3TUmCgV3Lx5XgP1yCiWC3xsnFjrS19YGfkF8cfL+5YnfXBStdYD7GL2I/mkUIl oWaw== X-Gm-Message-State: AA+aEWY/ka/lx5+U9RZyesatK5LI1eBVFqSpXDsT3OqBhtyWVtCgfbhM gjpD/keru0UId5Pa2oOzhoc= X-Google-Smtp-Source: AFSGD/XCYgp2n6afvG2NNG13lbKRDr+Z8n6ZKQ8J0OQOGaIotugH6znCCj6Lc0VvKfwDWXv900qNgQ== X-Received: by 2002:a63:396:: with SMTP id 144mr24368991pgd.68.1544102518590; Thu, 06 Dec 2018 05:21:58 -0800 (PST) Received: from localhost.corp.microsoft.com ([2404:f801:9000:1a:d9bd:62c6:740b:9fc4]) by smtp.googlemail.com with ESMTPSA id y5sm2409246pge.49.2018.12.06.05.21.51 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 06 Dec 2018 05:21:58 -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@linux-mips.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: [Resend PATCH V5 4/10] KVM/VMX: Add hv tlb range flush support Date: Thu, 6 Dec 2018 21:21:07 +0800 Message-Id: <20181206132113.2691-5-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20181206132113.2691-1-Tianyu.Lan@microsoft.com> References: <20181206132113.2691-1-Tianyu.Lan@microsoft.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lan Tianyu This patch is to register tlb_remote_flush_with_range callback with hv tlb range flush interface. Signed-off-by: Lan Tianyu --- Change since v4: - Use new function kvm_fill_hv_flush_list_func() to fill flush request. Change since v3: - Merge Vitaly's don't pass EPT configuration info to vmx_hv_remote_flush_tlb() fix. Change since v1: - Pass flush range with new hyper-v tlb flush struct rather than KVM tlb flush struct. --- arch/x86/kvm/vmx.c | 63 +++++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 46 insertions(+), 17 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 2356118ea440..bad2aa6c5ca1 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1569,7 +1569,34 @@ static void check_ept_pointer_match(struct kvm *kvm) to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH; } -static int vmx_hv_remote_flush_tlb(struct kvm *kvm) +int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush, + void *data) +{ + struct kvm_tlb_range *range = data; + + return hyperv_fill_flush_guest_mapping_list(flush, range->start_gfn, + range->pages); +} + +static inline int __hv_remote_flush_tlb_with_range(struct kvm *kvm, + struct kvm_vcpu *vcpu, struct kvm_tlb_range *range) +{ + u64 ept_pointer = to_vmx(vcpu)->ept_pointer; + + /* + * FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE hypercall needs address + * of the base of EPT PML4 table, strip off EPT configuration + * information. + */ + if (range) + return hyperv_flush_guest_mapping_range(ept_pointer & PAGE_MASK, + kvm_fill_hv_flush_list_func, (void *)range); + else + return hyperv_flush_guest_mapping(ept_pointer & PAGE_MASK); +} + +static int hv_remote_flush_tlb_with_range(struct kvm *kvm, + struct kvm_tlb_range *range) { struct kvm_vcpu *vcpu; int ret = -ENOTSUPP, i; @@ -1579,29 +1606,26 @@ static int vmx_hv_remote_flush_tlb(struct kvm *kvm) if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK) check_ept_pointer_match(kvm); - /* - * FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE hypercall needs the address of the - * base of EPT PML4 table, strip off EPT configuration information. - * If ept_pointer is invalid pointer, bypass the flush request. - */ if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) { kvm_for_each_vcpu(i, vcpu, kvm) { - u64 ept_pointer = to_vmx(vcpu)->ept_pointer; - - if (!VALID_PAGE(ept_pointer)) - continue; - - ret |= hyperv_flush_guest_mapping( - ept_pointer & PAGE_MASK); + /* If ept_pointer is invalid pointer, bypass flush request. */ + if (VALID_PAGE(to_vmx(vcpu)->ept_pointer)) + ret |= __hv_remote_flush_tlb_with_range( + kvm, vcpu, range); } } else { - ret = hyperv_flush_guest_mapping( - to_vmx(kvm_get_vcpu(kvm, 0))->ept_pointer & PAGE_MASK); + ret = __hv_remote_flush_tlb_with_range(kvm, + kvm_get_vcpu(kvm, 0), range); } spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock); return ret; } + +static int hv_remote_flush_tlb(struct kvm *kvm) +{ + return hv_remote_flush_tlb_with_range(kvm, NULL); +} #else /* !IS_ENABLED(CONFIG_HYPERV) */ static inline void evmcs_write64(unsigned long field, u64 value) {} static inline void evmcs_write32(unsigned long field, u32 value) {} @@ -7971,8 +7995,11 @@ static __init int hardware_setup(void) #if IS_ENABLED(CONFIG_HYPERV) if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH - && enable_ept) - kvm_x86_ops->tlb_remote_flush = vmx_hv_remote_flush_tlb; + && enable_ept) { + kvm_x86_ops->tlb_remote_flush = hv_remote_flush_tlb; + kvm_x86_ops->tlb_remote_flush_with_range = + hv_remote_flush_tlb_with_range; + } #endif if (!cpu_has_vmx_ple()) { @@ -11612,6 +11639,8 @@ static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id) vmx->nested.posted_intr_nv = -1; vmx->nested.current_vmptr = -1ull; + vmx->ept_pointer = INVALID_PAGE; + vmx->msr_ia32_feature_control_valid_bits = FEATURE_CONTROL_LOCKED; /* -- 2.14.4