From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A8907606A326 for ; Wed, 11 Nov 2026 17:44:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=iERjwhHd; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=aYsNj+Jj 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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=Lg38hiBjDXw9cSHliNLU5G5GwmBdVZAwW1RU9LwK+4w=; b=iERjwhHdT79qeYfwdtzzCIiVzx tMHl85KB4QETWnqBrsB4b8q0h7Hd7xrsNKWfDETEheCy8/r8wEeDeMDm5B4vDISfZbNugdmdQUz33 XkU4MSItWII6pfdue+3ib9gUEjLrOwjbFezjqGhTzrZMPYRonhyO3ezv02X9gr1IGaObC8lG7QSlu XmJoQZ+ndPDcY055yVRKbTg9kLHAcj+04cUqR++kzldQ1gEZisvnwaavUB3P36wWTcxRsUeg7uEAa PK+9sNvz3f6T05aWbRFw9jyHQc/5cwrjDgvSXPTaWe8zMyzqAUOpeyPeXNMnw+hPyywSgi4ARQ3d0 4i9KETfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRCNP-00000007KSK-2xnJ; Wed, 11 Nov 2026 17:44:51 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRCNO-00000007KSB-1RD0 for linux-arm-kernel@lists.infradead.org; Wed, 11 Nov 2026 17:44:50 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 8E920634E7; Wed, 11 Nov 2026 17:44:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1C0F61F00A05; Wed, 11 Nov 2026 17:44:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794419089; bh=Lg38hiBjDXw9cSHliNLU5G5GwmBdVZAwW1RU9LwK+4w=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=aYsNj+JjgNOG/AX25zAAGt2RliUQSf76sv5AsNjNO1u/LByCnXQg19OCButP+nN+L 2zFXvTe6prgut3foVwuXfZs2xfSptIk7wI92j8dQmtsqfyEJRsBvFMWbOD4RPnMpaV WNHqkEh/XbLnB5pBb/G6pDjSktZAka5wOlmHItQ8YK+mxmtw1BTllMhFomoSfYKotW woD4H7rHXd3hTGYsaiQB4ELEVeSx6z+IgOquJnfR8pT9NnlVpPFXrekXY53aBev0aJ FQdENxc9+JVgax638KjqDUH4UV/TolKmzVK5KyIsfqVtckoPkifyhnLoZlIPKqATud qfZlrleX+BcwA== Date: Wed, 11 Nov 2026 17:44:43 +0000 From: "Lorenzo Stoakes (ARM)" To: Sean Christopherson Cc: Alexandru Elisei , pbonzini@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org, oupton@kernel.org, suzuki.poulose@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, david@kernel.org, mark.rutland@arm.com, ackerleytng@google.com Subject: Re: [PATCH v2] KVM: Ignore MMU notifiers for guest_memfd-only memslots Message-ID: References: <20260714160411.302386-1-alexandru.elisei@arm.com> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-5.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Wed, Nov 11, 2026 at 09:38:00AM -0800, Sean Christopherson wrote: > On Thu, Nov 05, 2026, Sean Christopherson wrote: > > On Wed, Nov 04, 2026, Lorenzo Stoakes (ARM) wrote: > > > [updated David's email address to @kernel.org] > > > > > > On Wed, Aug 12, 2026 at 10:42:50AM +0100, Alexandru Elisei wrote: > > > [ ... ] > > > > On Fri, Jul 24, 2026 at 12:52:20PM -0700, Sean Christopherson wrote: > > > > > It'll probably take me a few weeks to circle back to this, as I finally crawled > > > > > out from underneath a pile of urgent and am just now getting back into review > > > > > mode, but this is fairly high on my todo list, so with luck we might still squeeze > > > > > this into 7.3. > > > > > > Hey Sean, > > > > > > I wondered whether you'd had a chance to look at this? > > > > > > After discussing this with Marc and Alex it is clear that this is really a > > > blocker for Alex's SPE series, as we need a sensible means of ensuring > > > that stage-2 mappings stay in place. > > > > > > So ideally would prefer to get something like this in in the next cycle, > > > if you don't have any objections to it? :) > > > > > > If it'd be easier, I think a smaller version of the same patch would also > > > give us what we need? I.e. your snippet from June with the page ageing part > > > dropped, as below. > > > > The GPC invalidation fix landed, so we can go straight to the super simple v1. > > Compile tested only at this point, I'll formally post this (hopefully today), > > assuming nothing explodes in testing. > > /facepalm > > I spaced on sending this (and I think on testing it too...). I'll try to get it > posted in the next few days. Thanks :) and understandable, the AI wave is making the mailing list quite... an interesting place to be lately! -- Cheers, Lorenzo