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[23.128.96.18]) by mx.google.com with ESMTP id gs14si509273ejb.615.2020.09.01.05.12.21; Tue, 01 Sep 2020 05:12:44 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=mTaZ4112; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728101AbgIAMHT (ORCPT + 99 others); Tue, 1 Sep 2020 08:07:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726858AbgIAL5I (ORCPT ); Tue, 1 Sep 2020 07:57:08 -0400 Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF5E7C061244; Tue, 1 Sep 2020 04:57:06 -0700 (PDT) Received: by mail-pj1-x1043.google.com with SMTP id 2so501784pjx.5; Tue, 01 Sep 2020 04:57:06 -0700 (PDT) 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=mFkdWLKZl5wBoxMfTFXNzpq7BQ7hhrLO443ZFVNRdhM=; b=mTaZ4112TNRS4prIcuvRmJGJGSj4Hytxxx3g67T2HWEmdGS4Sar2bnfqM2bCTXhXpF Ry6cpqaOTNxTH8V+QfxX/MS3ddxvv998ZwMfAGxPXd0VEiJHdyDF5X7YIvg7neqDRF+9 W5W3i9KBK2Uj+mJgyBIM91ipOGUBQxGPHE1bPANxntAh3EHs8RXG0TiuidiZzhf+lOnd 0LbCzi2uRJf5lwFUvo+93vHEuhMbGq+q900kmTiwBGzMp854HFB9DdamMTsxsavhGqgx yNxbPRK5GOAxuYDmsHh+emMvtbjwQWTrkhrHCSoLpDNjDRfzx3GC8e0BdInIo29II0mf XJBQ== 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=mFkdWLKZl5wBoxMfTFXNzpq7BQ7hhrLO443ZFVNRdhM=; b=Md3ZCFH7MM8iRUOOUnKcepozyUAay5Ii1GEsInAMgKpY0MTNvvZnLI5emeYRUobCaK S9kAL3Ug+AQcMZSnb1NnNzwC5liHdyocRDMWbVH3v3rkzIsv2iNJlWxWagYbo6IQ0rwP golc+jbR4sqCjtedXR/K0mYiJXJi50aLIvPrtOrq/GpV1SLz2m1H4gqMmGVpjILg0qZM s7Jbs6iW+s+h5BSJx/z/oNxbATtK0RKq3FCQT55p7OgO3WHGasglFCMRddJrrjo27b+U MJr1Jv6Lb1sUO4whAr4Xeqg7uGgPV9wCCH+xHJg/apcYW+SRtwhiwnto1SVGQpkWudWO Ea2A== X-Gm-Message-State: AOAM53382FZhfY8VTZfkM4Bvcb6MccCUQfst2w+/GdxiPnOvX2fRQDQN G/JPxmyESGEiPQm6rbuCT28= X-Received: by 2002:a17:90a:5298:: with SMTP id w24mr1161850pjh.221.1598961426409; Tue, 01 Sep 2020 04:57:06 -0700 (PDT) Received: from localhost.localdomain ([203.205.141.65]) by smtp.gmail.com with ESMTPSA id r2sm1854621pga.94.2020.09.01.04.56.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2020 04:57:06 -0700 (PDT) From: yulei.kernel@gmail.com X-Google-Original-From: yuleixzhang@tencent.com To: pbonzini@redhat.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com, jmattson@google.com, junaids@google.com, bgardon@google.com, vkuznets@redhat.com, xiaoguangrong.eric@gmail.com, kernellwp@gmail.com, lihaiwei.kernel@gmail.com, Yulei Zhang , Yulei Zhang Subject: [RFC V2 9/9] Handle certain mmu exposed functions properly while turn on direct build EPT mode Date: Tue, 1 Sep 2020 19:57:47 +0800 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yulei Zhang Signed-off-by: Yulei Zhang --- arch/x86/kvm/mmu/mmu.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 6639d9c7012e..35bd87bf965f 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -1719,6 +1719,9 @@ bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, int i; bool write_protected = false; + if (kvm->arch.global_root_hpa) + return write_protected; + for (i = PG_LEVEL_4K; i <= KVM_MAX_HUGEPAGE_LEVEL; ++i) { rmap_head = __gfn_to_rmap(gfn, i, slot); write_protected |= __rmap_write_protect(kvm, rmap_head, true); @@ -5862,6 +5865,9 @@ static void kvm_zap_obsolete_pages(struct kvm *kvm) */ static void kvm_mmu_zap_all_fast(struct kvm *kvm) { + if (kvm->arch.global_root_hpa) + return; + lockdep_assert_held(&kvm->slots_lock); spin_lock(&kvm->mmu_lock); @@ -5924,6 +5930,9 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end) struct kvm_memory_slot *memslot; int i; + if (kvm->arch.global_root_hpa) + return; + spin_lock(&kvm->mmu_lock); for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) { slots = __kvm_memslots(kvm, i); -- 2.17.1