From nobody Thu Nov 14 07:15:47 2024 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7491939FD3; Wed, 15 May 2024 01:00:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715734816; cv=none; b=kyqbo/R2V7QLWDz9iaY6JDtVuBFg1YoaeEJM4d5xKoQrDr7hXQv80I21mrgixFeaq5oI/JQLDCW0b3ouOe6f3J6VihefeV00lOAfWC2KSEsilKj43/WX5uYlVkqWP5GGMkxcoHR9tXu7NpUcXpQXlCR3cz9SOwnqxxbwXeJB2sI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715734816; c=relaxed/simple; bh=aj7fEmDeepMPOarJYfKiRSUouqqIYmoqtkZdy4tUeqg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=aJpoZLeYkJ+RSxYV6cpe2AyT6nvktSyB7PRzT4ZmLmxlGTjAOHeaAmVr8FS+eRnXqfm7wPVFRzpUdRBaDKhXM6VLRcmC2RB8oumyM1hfnX9V2k+6kQ9zHDp/fJALV8RMSTspGKZkuy/E4C2jREPiCCsZhRqu+iTveUIJ6dasV7I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=QdpfjLYS; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="QdpfjLYS" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1715734815; x=1747270815; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aj7fEmDeepMPOarJYfKiRSUouqqIYmoqtkZdy4tUeqg=; b=QdpfjLYStE+yiWVUfX3BnQ0+hygbzbbp3hpbUA9trrdgwXR6Ja3MDx5W tpF4W+udcuMJntxVNYdPIzJU83YMZ7+e/cL61I1zPrM4zz8Exjr64llJO SNBY4gm/hIOF/G6zseqL+v/Q0ipupi1jK2juwBzxdCP2KHqu69Ch1NPjE oeaSBEDOY5dPJlbFxe8FX8/rG5MITBnLsCYPeiO8/6Bt2sINolOkucydM E3kW6ULyXORt1ABQ1UmroGazathgm9SRRqdQPudNE1bV32ciw0lAb6sGl soMkkPO93PxFsig1qGMQ/TkUdgEarKMUoFOa27eGL2/QssKjUsBCTB3qp Q==; X-CSE-ConnectionGUID: a8KbWV+hRqWXNTA0oiD8Zg== X-CSE-MsgGUID: gQZq+WRRSbuY1akc02rQQg== X-IronPort-AV: E=McAfee;i="6600,9927,11073"; a="11613999" X-IronPort-AV: E=Sophos;i="6.08,160,1712646000"; d="scan'208";a="11613999" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 May 2024 18:00:10 -0700 X-CSE-ConnectionGUID: TFQG3a5BRwWlS7yGvC+bXg== X-CSE-MsgGUID: awm+P7luTueABNtx8YYR7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,160,1712646000"; d="scan'208";a="30942860" Received: from oyildiz-mobl1.amr.corp.intel.com (HELO rpedgeco-desk4.intel.com) ([10.209.51.34]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 May 2024 18:00:08 -0700 From: Rick Edgecombe To: pbonzini@redhat.com, seanjc@google.com, kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, isaku.yamahata@gmail.com, erdemaktas@google.com, sagis@google.com, yan.y.zhao@intel.com, dmatlack@google.com, rick.p.edgecombe@intel.com Subject: [PATCH 16/16] KVM: x86/tdp_mmu: Invalidate correct roots Date: Tue, 14 May 2024 17:59:52 -0700 Message-Id: <20240515005952.3410568-17-rick.p.edgecombe@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240515005952.3410568-1-rick.p.edgecombe@intel.com> References: <20240515005952.3410568-1-rick.p.edgecombe@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Sean Christopherson When invalidating roots, respect the root type passed. kvm_tdp_mmu_invalidate_roots() is called with different root types. For kvm_mmu_zap_all_fast() it only operates on shared roots. But when tearing down a TD it needs to invalidate all roots. Check the root type in root iterator. Signed-off-by: Sean Christopherson Co-developed-by: Isaku Yamahata Signed-off-by: Isaku Yamahata [evolved quite a bit from original author's patch] Co-developed-by: Rick Edgecombe Signed-off-by: Rick Edgecombe --- TDX MMU Part 1: - Rename from "Don't zap private pages for unsupported cases", and split many parts out. - Don't support MTRR, apic zapping (Rick) - Detangle private/shared alias logic in kvm_tdp_mmu_unmap_gfn_range() (Rick) - Fix TLB flushing bug debugged by (Chao Gao) https://lore.kernel.org/kvm/Zh8yHEiOKyvZO+QR@chao-email/ - Split out MTRR part - Use enum based root iterators (Sean) - Reorder logic in kvm_mmu_zap_memslot_leafs(). - Replace skip_private with enum kvm_tdp_mmu_root_type. --- arch/x86/kvm/mmu/tdp_mmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index af61d131d2dc..42ccafc7deff 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -1196,6 +1196,9 @@ void kvm_tdp_mmu_invalidate_roots(struct kvm *kvm, * or get/put references to roots. */ list_for_each_entry(root, &kvm->arch.tdp_mmu_roots, link) { + if (!tdp_mmu_root_match(root, types)) + continue; + /* * Note, invalid roots can outlive a memslot update! Invalid * roots must be *zapped* before the memslot update completes, --=20 2.34.1