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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3859CC5AD44 for ; Sat, 8 Aug 2026 18:36:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/SuFUBjQVnne/HL+wqlQZd+V6iBFMzeExDV/fn8/DYw=; b=MkayeY3CiAF7ptJtpeP7KA1Ueq mAxdAw2dBV2SdG7lJCb+0fVI/lxO4VpCG27lLt+OEPPPkp7dIWE9RegqMoQ/lENUajQ/bGuPUBui1 PJ2xwvfMDwxJrIDRpavRHyFI0JD5TjAyoDL8XbOkww4XXPdLAWIituo3gSFo/bTTpn+iG0jD2cUAM O8WkEj48jQHXF8Y5R8A+fzL+QkeEvb5TfkgH57/mzXCWBkVYw4qkNslGkdsrbyKj/dQvFBd0vfZpa NN5kbjC9xT7//CF62QACmnn2RQkQJ6pMoIQeHBGhyJe/J2TgWs47XWfVFNZPCsFfBIyPTCsry60AK O5e3HSRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wsltZ-00000009aAs-2wR8; Sat, 08 Aug 2026 18:35:45 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wsltY-00000009aAW-26XG for linux-arm-kernel@lists.infradead.org; Sat, 08 Aug 2026 18:35:44 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id D369B43D3C; Sat, 8 Aug 2026 18:35:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A5951F00A3F; Sat, 8 Aug 2026 18:35:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786214143; bh=/SuFUBjQVnne/HL+wqlQZd+V6iBFMzeExDV/fn8/DYw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=VpRcCBVUNaRKn1WHzyF6KhEFgSfBf09eLND3KW5ZP9WGguqOSFcLIg37rs8qq0ncN VXeZ6cAxrgD/8aXv9eLEwEO8NUTPp7Gi/F8eNlTHRIv2OZT94/Sfpe7NtQ/OT7mrfg kg+UYkXHVXKMQ0u9TzwTo2ar6PYjkfio2/dHZdX3eGp7bZi606TK8vJrjS7nRb86mm x11LyHxVeoo0zho3MQVAVMwkoaqI7kNa/eFcrnd2HVc5+Tv3XJzvNK0fqeOVJwti+h 4rWaMp66GT/EoCFPRBDm5x1D9hF/Ew6v2J8FsYNL7BXJ9UXIN3xikumRgwCrznaM8+ VZSOlSyPvhpwg== From: Oliver Upton To: kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Marc Zyngier Cc: Oliver Upton , Steffen Eiden , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Fuad Tabba , Hyunwoo Kim , Yao Yuan , ljs@kernel.org Subject: Re: [PATCH v2 0/8] KVM: arm64: VNCR TLB invalidation fixes Date: Sat, 8 Aug 2026 11:35:39 -0700 Message-ID: <178621413203.380376.242769068720524648.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260806091026.620700-1-maz@kernel.org> References: <20260806091026.620700-1-maz@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 06 Aug 2026 10:10:18 +0100, Marc Zyngier wrote: > Prompted by a patch [0] from Hyunwoo Kim which was addressing a pretty > annoying corner case, I spent some time looking at what was wrong in > our VNCR TLBI code. And there was a few things to say about it... > > - The TLB tracking to get into the slow path is wrong. It tracks what > is mapped, but not the established TLBs. Kind of annoying. > > [...] Applied to next, thanks! [1/8] KVM: arm64: Remove VM-wide VNCR mapping counter https://git.kernel.org/kvmarm/kvmarm/c/c55bc773b6e8 [2/8] KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation https://git.kernel.org/kvmarm/kvmarm/c/8053393680d4 [3/8] KVM: arm64: Consider SCTLR_EL2.M when mapping the L1 VNCR page https://git.kernel.org/kvmarm/kvmarm/c/8c774604b6ec [4/8] KVM: arm64: Correctly handle end of VA space TLBI invalidation https://git.kernel.org/kvmarm/kvmarm/c/34af2c3e31f9 [5/8] KVM: arm64: Handle VNCR TLB invalidation race with vcpu_put() VNCR unmapping https://git.kernel.org/kvmarm/kvmarm/c/38640bc32be3 [6/8] KVM: arm64: Sign-extend VA for range-based TLBI invalidation https://git.kernel.org/kvmarm/kvmarm/c/239347008564 [7/8] KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry https://git.kernel.org/kvmarm/kvmarm/c/2b7324f3a0c1 [8/8] KVM: arm64: Add VNCR TLB tracking again https://git.kernel.org/kvmarm/kvmarm/c/62e3bb894a6e -- Best, Oliver