From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794419089; b=ow5y3hYbG0Mq05qOSmNLQcan9y0HbGZUwsoP00aVY5LZ/DVzMi0S/DHqeBWvY4B4WWoR cU4egzzb6ooklC4JviiNflG+mq+/7DxpeYP6iIgYmUFD/TzBOdyw3+srp9+0fb773HfsN beJZ7KljK9/0CMHnHpLa3eiL6HpmmksHazlG8tDCvdW0XBL+03i3X2HZ+lg4v/eEl/aHW dv1z5Z1rOFTBuUkRVeU13rPcFhqZFMuscirydZdAxrzSt276pFY6nptNf6hhbiOAwxz4O D7TsG8zkhSynd4pJ/kzBIiIJ5M4V4HhCR8nGcwO9Xj7IM8kEk5uVozPj8FrgvWsHoOw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794419089; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=Lg38hiBjDXw9cSHliNLU5G5GwmBdVZAwW1RU9LwK+4w=; b=AgN41vT5DvPvucU2lWaAzlvaFxT1Z75Z/IYNRGtrfYMDap+ZpR+nh/dfXP0ZKkCQIdGo 4IvCqReEKnAZVlJDp/xcHdDZQOAoRW/Z9mLI7Dtf5hc68TPmOVy12TbHQUQoXsiG2Ht4+ plFQrp2s6HKwZ+maDt0l4k2EAFBNlr0yAJ/YNqkDuakg6Htm1VV2vuTMQvlKSl3I4CZWW lnqb3bTDr2ufUc3QZ6VP3yb+ngScCxYjlOo7vIH9Xz2u/DTq9GFWovM5WZXhlCO5AqOKV 86KVGghl9kcbyNPOuRUlRV2ezmTtkys+tEn/QKhQ7rud5vNlUuNv9gVOVvnMM1DrM2w== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=aYsNj+Jj; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A5A99606A326; Wed, 11 Nov 2026 17:44:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=aYsNj+Jj 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-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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