From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6C2A3146D53; Sat, 7 Mar 2026 16:44:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772901874; cv=none; b=rbZZIuvNQ8ap0k2BYVn1iPQTXZeF7Qy0kGYPd1zx/OIq8Hqls7UZHQG/4k40YiUvQHMKF5UkOaEN7xc0KSUyFU1V6CVofzRsofMlaDoytbYJOjBAfuRNoNR7pe1GXToBmSuHEPhHUk10TGe66aVVgTqGQOIsDjIBqVctTlV3c6k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772901874; c=relaxed/simple; bh=A8CPe8kvo6M7WnQAB5f1vA1Yrm17wND/PJ09X5gQBvE=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=qL3ILBkzTQJzLZFtn6uzyyML80M1Nn+uEXTWs9MlvpeUsUUSAkn+QWrPJxk+MjDOzKY+ZxhpWzpqSyNHPddovnK34txl6ul2YrEV8d4bb4iDsy52kIeyopv57WJ50+xRI3BoCJf0xyWWFZZj3fGWaFgSLGgEdvANJQyEv779w9w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iaNUATR9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iaNUATR9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD664C19422; Sat, 7 Mar 2026 16:44:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772901873; bh=A8CPe8kvo6M7WnQAB5f1vA1Yrm17wND/PJ09X5gQBvE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=iaNUATR9hWEGcmHnUpVVnHvLDTb02OdfB9tdLTC9iMm6LX4kbtIls5Wce0LqANyLX c9N/h/Cf4o6NqKuZFLHQ5dVTUzFi4OwvHZk+MpOBcpG1m1fAbhKPmMwSQaSG9UeWmH OeJ9X42zyrX8kL9OCtXyuYTJCj7QHqFsiJH9P0L1XmKogTlvDDFJ4iJqNzm/bWJDY1 koHibe6vWGsDaxur3/rhpXMMXOK47i/FCAeSmyWcvGj3LxMtnej4eytw+8jFYaZ2Di 4icpQLsC9Ho7AjyZvxJOhOn18NdzmJ9T0P7885q+tuuhSogqKHEKFzmY221JiARsiT TS+rzw/cs2xFw== Received: from sofa.misterjones.org ([185.219.108.64] helo=lobster-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vyulT-0000000HCNL-3FyB; Sat, 07 Mar 2026 16:44:31 +0000 Date: Sat, 07 Mar 2026 16:44:31 +0000 Message-ID: <87zf4jd1xs.wl-maz@kernel.org> From: Marc Zyngier To: stable@vger.kernel.org Cc: stable-commits@vger.kernel.org, oupton@kernel.org, Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon Subject: Re: Patch "KVM: arm64: Advertise support for FEAT_SCTLR2" has been added to the 6.12-stable tree In-Reply-To: <20260307131250.3919487-1-sashal@kernel.org> References: <20260307131250.3919487-1-sashal@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: stable@vger.kernel.org, stable-commits@vger.kernel.org, oupton@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Sat, 07 Mar 2026 13:12:50 +0000, Sasha Levin wrote: > > This is a note to let you know that I've just added the patch titled > > KVM: arm64: Advertise support for FEAT_SCTLR2 > > to the 6.12-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary > > The filename of the patch is: > kvm-arm64-advertise-support-for-feat_sctlr2.patch > and it can be found in the queue-6.12 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let know about it. Of course it should not. And the reason is written in the commit log: > Everything is in place to handle the additional state for SCTLR2_ELx, > which is all that FEAT_SCTLR2 implies. Where is that handling? Oh wait, it's not there. That's only 20 patches you're missing. Now you are advertising a new feature to guests, which is not context switched, and offering potential control from guests on the host. But hey, who cares about that... If you cannot be bothered to resolve trivial conflicts, please don't. Fail the backport, and someone who actually cares will do the work. M. -- Jazz isn't dead. It just smells funny.