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 67300369220; Mon, 23 Feb 2026 19:22:47 +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=1771874568; cv=none; b=JCJKFXKQXU0KsTdNfurO+DfGR8KcJhA/ozWeRGnb/4H1J4Dxz9CLvAmvCRr/w4oj0qtcHRJISEyZn7BiHaC1fzv+Ag5Rca9mHP4y23UDHJ57TZilTyH2DJsLM02qwcCuFHG/FquwuFkKDWRXMJwDhHpu1ANimchPfxPvdu6Pr7E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771874568; c=relaxed/simple; bh=plKh0vhFAV1CCQloPBtJoWRXH/4QhMTAJJiapz7xUko=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aydNKxzFZg7LcJ4tyecZvxzo1ZgnIV5mVqgJnmE69En7RDtjAUJDHibZNDqOpAfFpbI+BAvRs6X2+p5T3Kg3td+e0LedFgByrRaxsD77S9BqDUmmgLLwdiWOszGAo3AAxtSmmZWWW0MsHSDTRfCQe6Goxnu1gd0dmZcWq0eDfU8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rwBFTi+j; 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="rwBFTi+j" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 843F0C116C6; Mon, 23 Feb 2026 19:22:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771874567; bh=plKh0vhFAV1CCQloPBtJoWRXH/4QhMTAJJiapz7xUko=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=rwBFTi+jI6nIYpVkv9cQlf5P2O5/P+1Tk8AMRTUDLQSOLMJfVOy2KY/998ZZFFmfz 5p+CiMJ6fE4uY01XvY+UowrspICfehHGm1OkjbdKryflIvr9jkgjELzjmLnB1oMNaO b06u9UP03YaNhYOCJpgqRxyir/EpQkQQ1LUbEmjk3DYrGCCM2HIOWA+c9ieExfxEHo TvRRaQ6vrXYjEB0N2NrWFGzMV1U0UvZfTlVP5B8z3txbPU5SwNZdF/cZ/nfn94zSk2 0WO2Yox0Los7yi8uTEtTN70uIIiOpPpo83w9jq22dUMVa5vKgfZu4/aPE2EVmbzfPP DwRc3ZD+MAsnw== Date: Mon, 23 Feb 2026 14:22:45 -0500 From: Sasha Levin To: Gerald Schaefer Cc: stable@vger.kernel.org, stable-commits@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle Subject: Re: Patch "s390: select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP" has been added to the 6.1-stable tree Message-ID: References: <20260222235114.1339059-1-sashal@kernel.org> <20260223155255.41342222@thinkpad-T15> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20260223155255.41342222@thinkpad-T15> On Mon, Feb 23, 2026 at 03:52:55PM +0100, Gerald Schaefer wrote: >On Sun, 22 Feb 2026 18:51:14 -0500 >Sasha Levin wrote: > >> This is a note to let you know that I've just added the patch titled >> >> s390: select ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP >> >> to the 6.1-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: >> s390-select-arch_want_hugetlb_page_optimize_vmemmap.patch >> and it can be found in the queue-6.1 subdirectory. >> >> If you, or anyone else, feels it should not be added to the stable tree, >> please let know about it. > >Please don't add this to any stable tree. This feature is broken on s390, >and it recently was removed upstream via commit 64e2f60f355e ("s390: >Disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP"), which also had a Cc: stable >and Fixes: 00a34d5a99c0. > >So we'd rather want commit 64e2f60f355e added to stable v6.2+, than >adding the original commit 00a34d5a99c0 to older trees. I'll drop the entire series from 6.1. -- Thanks, Sasha