From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ACAC51E882D for ; Fri, 11 Oct 2024 02:10:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728612655; cv=none; b=el0pBuaRYTTerKzKevfztElccJ2Lum2ka5wNC/N5X60DcXfHzHJx8npGmRRJ2RxjKgcktM3Q65I7F6jQqmNH2ZkmmaIl1uJzMoCTAVUbZsS9r9FNqSlqxn3sqqvsfG0hMsc2+QU23VKkR+xJpUiiRFtvslPQKdhxHq8Mix8bGtw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728612655; c=relaxed/simple; bh=zJSdJbBzdDiSwWhIJuRompQSetjqt4adgJuhI/CyVmc=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=ZTlTWU7+LcSP2BVHv4VfbTpRUtcHsjMBWzQ4gK4fZmk2gmg3szL0ZWu9z9gsMgumGVQ+RgygGCTxQ2F24xFeLjZeqqM+mCA3s+A7iqT9zbxJTI3Zuw2NBjcWdfVIK65KJGLmhVb5cn26VXK23v+J5zRvJd2lbv6tHICTXf3ulRM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=zDK58HzU; arc=none smtp.client-ip=209.85.128.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="zDK58HzU" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-6e2baf2ff64so27799257b3.0 for ; Thu, 10 Oct 2024 19:10:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1728612652; x=1729217452; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=5/FKyHqildhGZez+hgtXv2QUQsqoQKXeEoi9o/+C1cI=; b=zDK58HzU1qhD1/8FKtH63BV+Bv7zbnn3OYFEBpaiaaPzPapCfTBf56V7cNYKTpwMJX wmmWgZ9rIhnWoxpI1F2FmWEO1ZOmk9a834zEUEmM03ar73nf/PySKX1FlH7o/MuZ7yBy tX15jxDXD+cW3Jra3UvSuVlvGkDBLU731m9r7oN8uPnJd+lO/BfYK0Z2AqErHMwgHvca XWN8qoohcrdQ1Hfr0zAsM4Ma5eP0vaFTHw90AtvidbyWs+tZc4My7B8tBYqETbl7CwXR cxIEnWyLhjANZS7i0eGns/oNplznWiH0Mxr1NjoF1d243ZrisC4EZPdtej701xfLKGnP iAqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728612652; x=1729217452; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5/FKyHqildhGZez+hgtXv2QUQsqoQKXeEoi9o/+C1cI=; b=GfKNpPqlF/isSWAZBT+DN5AfoXLQynoNlf9S3cNf6sNjZfEBhp+hAcFKWPTznskMt7 ShRBKSLSXz+/SH0Q6iYc8fv7WfqO9XKo7aYHy8B/jP0daANyMpTbJu/s2MAR2M8pekg2 qL2i5OezVSxoDmTUhbZp1t43RFUaOuRDH1H29LAX8cvqCT/HX4SvpbMOfptI2axssFv3 /LcIIpA74wdLfuIRSHNEiiBsSLdmmPgMhMe53UitX8Qj4vw7oQo3rv6sYnSgqXLzCh9t pgymooPXQjtk3nBFD2QCStmlYBrMX6NtwiF7hXMV/XB8wRYemhWNO2C5Rrvd79xTzLC4 zn+A== X-Forwarded-Encrypted: i=1; AJvYcCWDhkWtw2T9E3PSCR17Un0uUIbAJr50fZfrfnAZk8huQZipfOY0NT1AGIZg7oQvsUBhkiHJXwcWYDBB9Ns=@vger.kernel.org X-Gm-Message-State: AOJu0YxMMdrc3C5iKb3u890lMNPg58Zbf1cpp6+BkqI8NGqWvCzm9oY1 cSUsp/3YzTdLk+U62Teg30upq/7dVwOZILYaLXZ7MgDUKgKgc9toV+E37hmn2dSSl+GLLg7ezj7 z3Q== X-Google-Smtp-Source: AGHT+IE0XX2WG+FjtezTqk/Tu6H3cMoEAQgdFOILW3CZ3tEJw12RJ2BlCsXz43TWSq3961vu0dEm9hLeyFQ= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:9d:3983:ac13:c240]) (user=seanjc job=sendgmr) by 2002:a05:690c:4982:b0:6dd:bcce:7cd4 with SMTP id 00721157ae682-6e3477b4505mr376497b3.2.1728612652667; Thu, 10 Oct 2024 19:10:52 -0700 (PDT) Reply-To: Sean Christopherson Date: Thu, 10 Oct 2024 19:10:32 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.47.0.rc1.288.g06298d1525-goog Message-ID: <20241011021051.1557902-1-seanjc@google.com> Subject: [PATCH 00/18] KVM: x86/mmu: A/D cleanups (on top of kvm_follow_pfn) From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yan Zhao , Sagi Shahar , "=?UTF-8?q?Alex=20Benn=C3=A9e?=" , David Matlack , James Houghton Content-Type: text/plain; charset="UTF-8" This is effectively an extensive of the kvm_follow_pfn series[*] (and applies on top of said series), but is x86-specific and is *almost* entirely related to Accessed and Dirty bits. There's no central theme beyond cleaning up things that were discovered when digging deep for the kvm_follow_pfn overhaul, and to a lesser extent the series to add MGLRU support in KVM x86. [*] https://lore.kernel.org/all/20241010182427.1434605-1-seanjc@google.com Sean Christopherson (18): KVM: x86/mmu: Flush remote TLBs iff MMU-writable flag is cleared from RO SPTE KVM: x86/mmu: Always set SPTE's dirty bit if it's created as writable KVM: x86/mmu: Fold all of make_spte()'s writable handling into one if-else KVM: x86/mmu: Don't force flush if SPTE update clears Accessed bit KVM: x86/mmu: Don't flush TLBs when clearing Dirty bit in shadow MMU KVM: x86/mmu: Drop ignored return value from kvm_tdp_mmu_clear_dirty_slot() KVM: x86/mmu: Fold mmu_spte_update_no_track() into mmu_spte_update() KVM: x86/mmu: WARN and flush if resolving a TDP MMU fault clears MMU-writable KVM: x86/mmu: Add a dedicated flag to track if A/D bits are globally enabled KVM: x86/mmu: Set shadow_accessed_mask for EPT even if A/D bits disabled KVM: x86/mmu: Set shadow_dirty_mask for EPT even if A/D bits disabled KVM: x86/mmu: Use Accessed bit even when _hardware_ A/D bits are disabled KVM: x86/mmu: Process only valid TDP MMU roots when aging a gfn range KVM: x86/mmu: Stop processing TDP MMU roots for test_age if young SPTE found KVM: x86/mmu: Dedup logic for detecting TLB flushes on leaf SPTE changes KVM: x86/mmu: Set Dirty bit for new SPTEs, even if _hardware_ A/D bits are disabled KVM: Allow arch code to elide TLB flushes when aging a young page KVM: x86: Don't emit TLB flushes when aging SPTEs for mmu_notifiers arch/x86/kvm/Kconfig | 1 + arch/x86/kvm/mmu/mmu.c | 72 +++++++----------------- arch/x86/kvm/mmu/spte.c | 59 ++++++++------------ arch/x86/kvm/mmu/spte.h | 72 ++++++++++++------------ arch/x86/kvm/mmu/tdp_mmu.c | 109 +++++++++++++++++-------------------- arch/x86/kvm/mmu/tdp_mmu.h | 2 +- virt/kvm/Kconfig | 4 ++ virt/kvm/kvm_main.c | 20 ++----- 8 files changed, 142 insertions(+), 197 deletions(-) base-commit: 3f9cf3d569fdf7fb451294b636991291965573ce -- 2.47.0.rc1.288.g06298d1525-goog