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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D308C28CF8 for ; Mon, 15 Oct 2018 04:40:49 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A598720842 for ; Mon, 15 Oct 2018 04:40:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A598720842 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42YQjq0b0MzF3F0 for ; Mon, 15 Oct 2018 15:40:47 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42YPr70mKYzF2yr for ; Mon, 15 Oct 2018 15:01:11 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 42YPr63M75zB4MZ; Mon, 15 Oct 2018 15:01:10 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: ed9e84a4d703243a232e6549a13dedfaf0d5d2d8 In-Reply-To: <20181012024406.20658-1-joel@jms.id.au> To: Joel Stanley , linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Subject: Re: powerpc: Use SWITCH_FRAME_SIZE for prom and rtas entry Message-Id: <42YPr63M75zB4MZ@ozlabs.org> Date: Mon, 15 Oct 2018 15:01:10 +1100 (AEDT) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, 2018-10-12 at 02:44:06 UTC, Joel Stanley wrote: > Commit 6c1719942e19 ("powerpc/of: Remove useless register save/restore > when calling OF back") removed the saving of srr0 and srr1 when calling > into OpenFirmware. Commit e31aa453bbc4 ("powerpc: Use LOAD_REG_IMMEDIATE > only for constants on 64-bit") did the same for rtas. > > This means we don't need to save the extra stack space and can use > the common SWITCH_FRAME_SIZE. > > There were already no users of _SRR0 and _SRR1 so we can remove them > too. > > Link: https://github.com/linuxppc/linux/issues/83 > Signed-off-by: Joel Stanley Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/ed9e84a4d703243a232e6549a13ded cheers