From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D4810CE7B06 for ; Fri, 14 Nov 2025 12:52:59 +0000 (UTC) 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-Owner; bh=fJlsB4J2zx7QXsXQmzFa/boQF6nqSXqjf+sMH02hV3M=; b=zTF5SBAC97kIH4CyWWJ7Ju1NrR vskb1t2mzmhTn1HK/d7fNo0qIeALbYFgJdQYCOTPTAzpGzPXaNxy1fE7NerP6PKHDlgq95muUmilt iF9/AMosudygsbTRDHe43CARP11/DfJr3GIBqaN82TTCb/Xajy+Nz3XOLiz5XtpfdJFMyT84kjdy7 l5hg+4AGcITtvTc76T3R2TNtGKdJQ7td27cXLhUi02GFiyuMWMpNd2qA4mc0tDMO2EFy8QM6hFWBX LxjWJKEd1Oxx+jEqC36cEYOk2MbF0fGNB1sFnPqm/tVJ1mJ3V/w/4OqY4MNvQFZlwSTjwU+8lv8eM 3J+t9+sQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJtIL-0000000CDLK-3x9u; Fri, 14 Nov 2025 12:52:53 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJtII-0000000CDKy-3IwG for linux-arm-kernel@lists.infradead.org; Fri, 14 Nov 2025 12:52:52 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 28E67438B4; Fri, 14 Nov 2025 12:52:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D14DAC4CEFB; Fri, 14 Nov 2025 12:52:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763124770; bh=6VphuKq2Z604/Y/bm30jdFUeDgNsvqjJPARDxw7M1cQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=QIDx9yASFfZiqhuxTYbuMYVdvwU6dUNnk/MSujK+ASdclnRPOUZbNTQuCis2Ilc1P hrXneM9cQ8B4FIDoDxqrePxMR2KL+KI5xN9nKFyK/5DfnH3SbitdhzIZx1jqQyqSSQ 7q/APRxayxN0XdeHDdi5MxaJzyk1DmFr+EGTv39iIikknUvi1fu0TTW3yeOotU1fRU /fAvtaId9qE2Avp/ifpfgmcISSPp7lm7aOGeXjR7MHTz3y5on6lVYGFmPBs1LpNijB yuJXap7kcbkF97Raabtgb+KCs6nVrnt+Uund+fDtKIgdLu7WA1qJDJ+pjxrxdv95pc t0QKHjPHozJ1Q== Date: Fri, 14 Nov 2025 12:52:42 +0000 From: Conor Dooley To: Jonathan Cameron Cc: arnd@arndb.de, Catalin Marinas , linux-cxl@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, Dan Williams , "H . Peter Anvin" , Peter Zijlstra , Andrew Morton , Drew Fustini , Linus Walleij , Alexandre Belloni , Krzysztof Kozlowski , james.morse@arm.com, Will Deacon , Davidlohr Bueso , linuxarm@huawei.com, Yushan Wang , Lorenzo Pieralisi , Mark Rutland , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Andy Lutomirski , Dave Jiang Subject: Re: [PATCH v5 0/6] Cache coherency management subsystem Message-ID: <20251114-juror-stiffness-046b47b8d9f7@spud> References: <20251031111709.1783347-1-Jonathan.Cameron@huawei.com> <20251108-spearmint-contend-aa3dd8a0220e@spud> <20251114124958.00006a85@huawei.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="yeJqfqlYgNstOKbS" Content-Disposition: inline In-Reply-To: <20251114124958.00006a85@huawei.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251114_045250_886090_1950B25E X-CRM114-Status: GOOD ( 26.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --yeJqfqlYgNstOKbS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Nov 14, 2025 at 12:49:58PM +0000, Jonathan Cameron wrote: > On Sat, 8 Nov 2025 20:02:52 +0000 > Conor Dooley wrote: >=20 > > Arnd, > >=20 > > On Fri, Oct 31, 2025 at 11:17:03AM +0000, Jonathan Cameron wrote: > > > Support system level interfaces for cache maintenance as found on some > > > ARM64 systems. It is expected that systems using other CPU architectu= res > > > (such as RiscV) that support CXL memory and allow for native OS flows > > > will also use this. This is needed for correct functionality during > > > various forms of memory hotplug (e.g. CXL). Typical hardware has MMIO > > > interface found via ACPI DSDT. A system will often contain multiple > > > hardware instances. > > >=20 > > > Includes parameter changes to cpu_cache_invalidate_memregion() but no > > > functional changes for architectures that already support this call. > > >=20 > > > How to merge? > > > - Current suggestion would be via Conor's drivers/cache tree which ro= utes > > > through the SoC tree. =20 > >=20 > > I was gonna put this in linux-next, but I'm not really sure that Arnd > > was satisfied with the discussion on the previous version about > > suitability of the directory: https://lore.kernel.org/all/2025102811434= 8.000006ed@huawei.com/ > >=20 > > Arnd, did that response satisfy you, or nah? >=20 > Seems Arnd is busy. Conor, if you are happy doing so, maybe push it to a= tree > linux-next picks up, but hold off on the pull request until Arnd has had = a chance > to reply? Yeah, I did step one of that last night and will put it in linux-next =66rom Monday. Ultimately the PR goes to Arnd, so he can judge it there anyway. --yeJqfqlYgNstOKbS Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCaRcmGgAKCRB4tDGHoIJi 0onVAQD2iKKx0IizfAkg+H6zlKCEwvYhA65Pv6UxxL4osqTj/wD/fpvXj1YHfiHx eyDCpQIW29m6pDBP18HBv4dusvusNww= =yFYx -----END PGP SIGNATURE----- --yeJqfqlYgNstOKbS--