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 D842FC05027 for ; Sun, 12 Feb 2023 18:06:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Cc:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=d6poBRLS3BZ2vOacsXh+atn+k4e6ZgOrRut+XfpOG0w=; b=hRrfe8CPCwQosogZUScYBSvc38 xArBtaB+tWKZ+9sWHUlDc1jC0Pe6fm6+a2QGFcZS42f4dUQbwru032m90EAFKpzdHs7xKbADu8pS5 HmqcnfHugqHmnApXToyRjrnCqu9kr9lgmYknfnDCY3GZ0w+uDV/+/wFgSMdap22V3P3HFske4P1gB NA3/wXIaps27RRzDyNWIWEFMR/wXl18NkgcHSYn4UwkW0ldq94EwWIhQ3pKl5pv9lI3SG0xrrDOWk cgOymMeL3etzqSsSDKun5LnmRY1MDVtt7Jy2EVb6fqMl+jiUvwuIyJK8zU0QY+uwfVx8aML5eQVoM /z2hXSpw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pRGjx-00C2Fb-C4; Sun, 12 Feb 2023 18:06:17 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pRGjs-00C2EM-Ob; Sun, 12 Feb 2023 18:06:14 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id A302360CA0; Sun, 12 Feb 2023 18:06:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4C830C433D2; Sun, 12 Feb 2023 18:06:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676225169; bh=lp88wKQLqiF3Hiyw44dr0tpOeS79utafc+HLRjWlnYg=; h=Date:From:To:Subject:References:In-Reply-To:From; b=raJG3DXHPsmVeD91Ru+9mmbE/4O4IYRntyJ3WTHhIqt2KY2fmSrEnXz2x5bq8NLps pbLRXwK3BiBMN1LQNpUmZCcOYpPg4GlwJVZGv3W1Etv/r+cmPBQvo/yc5vFInIaF9b Aie6WTLql1XOemrAWDJjniRKO6aD23VkBeEQaZ5XAfmnB9/NOML93vi5Zp3aNbLeA9 ykexNiySadnHumXTDovz1HQUOmqPcZYSSJhMLjkIS7tqhzIw7Ea6MPcVJYWuyDJk/L inx7/PxQvnaZ7X3yZ/28faDwVb99ZToMT7ZkoRcFGuHtZ6v5zzyxCZqO26gp2fMHwV UQfnSLYUISkLw== Date: Sun, 12 Feb 2023 18:06:03 +0000 From: Conor Dooley To: Jisheng Zhang , Palmer Dabbelt , Paul Walmsley , Albert Ou , Anup Patel , Atish Patra , Heiko Stuebner , Andrew Jones , Conor Dooley , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, Guenter Roeck Subject: Re: [PATCH v5 00/13] riscv: improve boot time isa extensions handling Message-ID: References: <20230128172856.3814-1-jszhang@kernel.org> <20230212154333.GA3760469@roeck-us.net> MIME-Version: 1.0 In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230212_100612_884247_8B9B27DD X-CRM114-Status: GOOD ( 15.50 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1282200074689488654==" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org --===============1282200074689488654== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="GmLjP+yv5qcdEtuf" Content-Disposition: inline --GmLjP+yv5qcdEtuf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Feb 12, 2023 at 05:06:09PM +0000, Conor Dooley wrote: > On Sun, Feb 12, 2023 at 04:33:58PM +0000, Conor Dooley wrote: > > On Sun, Feb 12, 2023 at 03:59:59PM +0000, Conor Dooley wrote: >=20 > So as not to lead anyone up the garden path, let me correct myself: >=20 > > Hmm, so this appears to be us attempting to patch in alternatives where > > none actually exists - seemingly F & D. >=20 > And of course that's not true, riscv_has_extension_likely() now uses > alternatives as of: > bdda5d554e43 ("riscv: introduce riscv_has_extension_[un]likely()") >=20 > From a quick look, it just happens that the only users are F & D. >=20 Samuel pointed out that this is a lockdep splat on irc. There's a patch on the list that removes the lockdep annotation entirely: https://patchwork.kernel.org/project/linux-riscv/patch/20230202114116.36957= 93-1-changbin.du@huawei.com/ So ye, no surprises that it was config based! Palmer posted a "better" fix for that lockdep warning a while ago: https://lore.kernel.org/all/20220322022331.32136-1-palmer@rivosinc.com/ So we'd have to duplicate/reuse that for cpufeature/errata patching. --GmLjP+yv5qcdEtuf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCY+kqiwAKCRB4tDGHoIJi 0vcsAQDNCg9J+6Vcsh5GKfX2XL35m7Wf0yDTU5M28FIiLYqBUgEAshGaQIbqzGuw 8lC8srYQoSDY+hH/TPM6ZvHj9k1AqQY= =Vm7y -----END PGP SIGNATURE----- --GmLjP+yv5qcdEtuf-- --===============1282200074689488654== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv --===============1282200074689488654==--