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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0333EC3DA61 for ; Mon, 29 Jul 2024 14:41:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7BC436B0088; Mon, 29 Jul 2024 10:41:18 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 76C6C6B0089; Mon, 29 Jul 2024 10:41:18 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 634016B008A; Mon, 29 Jul 2024 10:41:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 441956B0088 for ; Mon, 29 Jul 2024 10:41:18 -0400 (EDT) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id AD727C0378 for ; Mon, 29 Jul 2024 14:41:17 +0000 (UTC) X-FDA: 82393052994.04.D2B068A Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf19.hostedemail.com (Postfix) with ESMTP id 5350D1A000D for ; Mon, 29 Jul 2024 14:41:14 +0000 (UTC) Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=tGBYnPIB; spf=pass (imf19.hostedemail.com: domain of broonie@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=broonie@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1722264048; a=rsa-sha256; cv=none; b=4aigJDPxswgDXON3hPwTzkIMrxG8Yju4ODvTyMALwjg/wbNhSs4sCKTCoy2MV1IC2L80Gy jcQh0NrVlcOJ8bbFpOdJlEPLR5EtGg//0yr8afcio1dEJr7dQnhddx9k3JkebbTtuA69qR GmirSDt1xbyKc9flgONxavSLhGMUlBo= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=tGBYnPIB; spf=pass (imf19.hostedemail.com: domain of broonie@kernel.org designates 145.40.73.55 as permitted sender) smtp.mailfrom=broonie@kernel.org; dmarc=pass (policy=none) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1722264048; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Q1+AFnT8npjT4Lpzo89th+2c5Ce2NhXgTpXjWRxaQgU=; b=Wf+Gm5fT7hVou3oETK7owT4geU8HHTT0MRfJI0JTr9LKVdigekqZz4ZbXGJssDa+LuhprY tgyx1eZxUIuKRhuJJ69qTH2mv4aSLbEfqUxOGqDhjrZo5bmPgxqOLH2Qg/HNIjFRKK/6cg 5arhu/O0gqMwlFHlvc7ysTwA22+99Yc= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id DB2A5CE0AF1; Mon, 29 Jul 2024 14:41:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 432FDC32786; Mon, 29 Jul 2024 14:41:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722264070; bh=Q1+AFnT8npjT4Lpzo89th+2c5Ce2NhXgTpXjWRxaQgU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tGBYnPIBHtddODwHKJTwc5SNcydiu0rIYiiTdQSD6Jcfh58muUgxoWWx1HGhX+dBA q4aNdnMat9XV/dJSr0Krv+/572bI25pLk/Mw8m3pM/U67w+XRoDfY2+d4KHpmcz3zd fs7kdyp/5OPkGmfFhDPiV8SESJ0AtpesUlGHkWwO5faFczHM1ygCJXXDhxZQtS9nMM L7cFmnCjTkawc8+Es8/SthD6tGXrnfkoP8QVC8hDN+yc/Ow6VOcYYv+1KldeWxoBo2 ImEtsNVE8MBdBTpOGXTm/zjat/YsFzJyu+drwCuJE0zSeQMzp8zqe1jcPiaFpveRI2 IYuXCKTTYBmqQ== Date: Mon, 29 Jul 2024 15:41:00 +0100 From: Mark Brown To: Dave Martin Cc: Amit Daniel Kachhap , Joey Gouly , linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, bp@alien8.de, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev Subject: Re: [PATCH v4 18/29] arm64: add POE signal support Message-ID: <8a6135cc-67cd-4fbe-96fa-3598491c1c66@sirena.org.uk> References: <20240503130147.1154804-1-joey.gouly@arm.com> <20240503130147.1154804-19-joey.gouly@arm.com> <229bd367-466e-4bf9-9627-24d2d0821ff4@arm.com> <7789da64-34e2-49db-b203-84b80e5831d5@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="hJtaL31y4F/8RS76" Content-Disposition: inline In-Reply-To: X-Cookie: List was current at time of printing. X-Stat-Signature: s88sh8bp4qbpo1q34picx3jqu3y3udga X-Rspamd-Queue-Id: 5350D1A000D X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1722264074-883397 X-HE-Meta: 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 GWCaQ0b0 x1qYOVuHTkRe+ALcQoKOW//pjNwLvCmSaRngcf9eM8yOPVEq660lI75V2fn2KoXiITyZbB7Ov9Dd4QVWG3cFTn34EVkNwOBlFt2I7fHx49rF3+5/paed8ecZ2jlSgYzj/J0W6wyvnKPRpOX0jpBrYGJFVgCnRFtvosZnt3Jlxx9tU/8+WFuirOM3CYtYNRsaUykloVH+5LfaMrCIBJPHmuXJFjrZj8OfF5WtRs/ooFzRqsEZLc98w0894mMIGEBKd2c98xc6utn0kO9PV+Xamyxv9Vg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: --hJtaL31y4F/8RS76 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Jul 29, 2024 at 03:27:11PM +0100, Dave Martin wrote: > On Fri, Jul 26, 2024 at 06:39:27PM +0100, Mark Brown wrote: > > Yes, though that would mean if we had to generate any register in there > > we'd always have to generate at least as many entries as whatever number > > it got assigned which depending on how much optionality ends up getting > > used might be unfortunate. > Ack, though it's only 150 bytes or so at most, so just zeroing it all > (or as much as we know about) doesn't feel like a big cost. > It depends how determined we are to squeeze the most out of the > remaining space. Indeed, I was more thinking about how it might scale as the number of extensions grows rather than the current costs. --hJtaL31y4F/8RS76 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmanqfsACgkQJNaLcl1U h9AXbgf+JtPrAvhLYf2ZdjhYtqAh1SMzgRQmESORZGriT/8kYjk9Mo4NTTvAC2Yn /VfRFTo1v4jtdJYliDP8UNjdn0/QJDc/vV8wuWpM2OuGhJIY632rnSXGdUKRyg1n x2CMonSmVuyf9RgJv7ycXFXL2p1CqtQTJ1s1B/q+JMxL0qRTtPouELOvuEzsk6Pu cr0MQ6m9KR1RlhfmTeW23zy+Diwyrgj9E6Fp5vHHU31sK1rYS7z7ODNzWxhBOkdw JY29M0Zsww4EHQqBRB9CoPAKSbx3GgG6c5yo6BHxem4Fpun2mq0OKuIfobbb8Luk psf1yW9CJPnOO6ekMQXlpmPZwS1CPg== =os6B -----END PGP SIGNATURE----- --hJtaL31y4F/8RS76--