From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 D9E88175A7C; Fri, 10 Jul 2026 15:16:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783696573; cv=none; b=L/KpRLMB5pHoIYmAmJbS1der7CCB84HtD90PQjamatR9KE1LypltaZcLlEfM5ZLg112SGyetW5Zu0sooKlSvjBJ6/WHMJh1I6AT+XNZ42NOgGl9E4BDSOFqtfaZuvpuWxfA0dBmAuwfO8m4jaHCmSvXYDuHQGqlPCcqBnD+vHCk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783696573; c=relaxed/simple; bh=UikHL7SaRQhcW9jgP94Aas0kJna+z1e/sa7fJz0VgVk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SrxYFwK1wtCaWBjMGxzygordwysV8cGmLIYRZKDkZt/7TSGNKaqtW0xZHoPKK7uAbfQ0NibUAt0tanjVONK6fsAqViyyYCneqhCRuer/XsfyBKyg4dDTx7xtIGVRTNLS622F1pdD+xT0AuIm7MgRf6RisHKK6kO0ahFGz/Ld/QU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DHGTVQQh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DHGTVQQh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C39A61F000E9; Fri, 10 Jul 2026 15:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783696570; bh=4r0Cc9l2aAmZyRZIk2/aSrghpeZfvwxavhupSZVEeMs=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=DHGTVQQhWaTrPzJXRhL+eOlPh3mjgM3TYm3BACmuvjIRndZXufi/DOhVvVPUUmShz pMaTajqPd2DgQBSgWuLiUyl1vIFajO3tcup29tN2rA+oZElUGBQ1IGgnnzXislM27I 7CvnkGOpI5896VQOz3W8Gmxeu3uzmNGoxn7r0l7pBdQ0sONYuYGXeAzxoC3tQ9/wUH UEFxz/qEn3hiXt8kPfwHLqlEerVkyRZiznIxE9j6rS+w6Jb2/IyIAdhgUn87BZzWbP pGVPtXCokUhc0BUp8Nl0bg7ctkDVndBAE1whxwQffv6MbiL/O4PIdb6JwCyyrjCy4K eJhH8u+Rek3lQ== Date: Fri, 10 Jul 2026 16:15:46 +0100 From: Lorenzo Stoakes To: Gregory Price Cc: Pedro Falcato , Andrew Morton , Russell King , Dinh Nguyen , Simon Schuster , "James E . J . Bottomley" , Helge Deller , Jarkko Sakkinen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Ian Abbott , H Hartley Sweeten , Lucas Stach , David Airlie , Simona Vetter , Patrik Jakobsson , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Clark , Dmitry Baryshkov , Tomi Valkeinen , Thierry Reding , Mikko Perttunen , Jonathan Hunter , Christian Koenig , Huang Rui , Ankit Agrawal , Alex Williamson , Alexander Viro , Christian Brauner , Dan Williams , Muchun Song , Oscar Salvador , David Hildenbrand , Suren Baghdasaryan , "Liam R . Howlett" , Matthew Wilcox , Marek Szyprowski , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Masami Hiramatsu , Oleg Nesterov , Steven Rostedt , SeongJae Park , Miaohe Lin , Hugh Dickins , Mike Rapoport , Kees Cook , Paolo Bonzini , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-sgx@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-tegra@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-mm@kvack.org, iommu@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kasan-dev@googlegroups.com, damon@lists.linux.dev, Rik van Riel , Harry Yoo , Jann Horn Subject: Re: [PATCH 17/30] mm: prefer vma_[start,end]_pgoff() to vma->vm_pgoff in kernel/ Message-ID: References: Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Fri, Jul 10, 2026 at 11:09:02AM -0400, Gregory Price wrote: > On Fri, Jul 10, 2026 at 03:56:33PM +0100, Lorenzo Stoakes wrote: > > On Thu, Jul 09, 2026 at 11:49:18AM -0400, Gregory Price wrote: > > > > > > Silly question: > > > > There's no such thing :) > > > > All my questions are silly. That's my secret :] Mine too ;) > > > > > > > What's the purpose of retaining tags in a non-address value? > > > > Well if you want to reconstitute an address from it later then that'd be the > > intent, but I'm being hand wavey here for sure. > > > > Main thing is to retain stuff under the page mask > > > > Right, which ... > > vvvvvv > > > That sounds like there's fragility just waiting to be broken. > > If that's an actual issue, then our relationship with tags is painful :[ Yeah, I'm just not sure tbh. But all that is stuf for future masochism^Wfun anyway ;) focusing on the 'respin the monster series' fun^Wmasochism atm... > > ~Gregory Cheers, Lorenzo