| Message ID | eadcfc770b4f1e35535ffb85e28e858a2c31dec4.1640017960.git.christophe.leroy@csgroup.eu (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show
Return-Path: <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=<UNKNOWN>) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4JHlgn6WrPz9sCD for <incoming@patchwork.ozlabs.org>; Tue, 21 Dec 2021 03:40:21 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4JHlgn5QX2z3dgY for <incoming@patchwork.ozlabs.org>; Tue, 21 Dec 2021 03:40:21 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=csgroup.eu (client-ip=2a01:111:f400:7e18::615; helo=fra01-pr2-obe.outbound.protection.outlook.com; envelope-from=christophe.leroy@csgroup.eu; receiver=<UNKNOWN>) Received: from FRA01-PR2-obe.outbound.protection.outlook.com (mail-pr2fra01on0615.outbound.protection.outlook.com [IPv6:2a01:111:f400:7e18::615]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4JHldc6cbTz2yg5 for <linuxppc-dev@lists.ozlabs.org>; Tue, 21 Dec 2021 03:38:28 +1100 (AEDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=HHQOkyjsYAYkSSUjlBnttsMlBNcVz6AHfxBVthsjyauVTRgA/KsiF1HXQOCfRHzOHht+Qhvb2c9wvps8Wu3eYrAVv2vXzWAhaN2hReyfpkYDL8ENTKp19b8JfIpg6i5pM4Zspm9qdchdBQkApcUN4b9VA1B2G2LGmanQOnlO6wdVgnemw6Qa8ZRCKhQG2bIU88LwvMTiqkpwdmgpmDtJRmC1zSB99DQAZ72cu7LI5+L06mzvl61GrhtO7Fs8uWvI/EY8BEZSDilBCcionRCHloEqxMJYflliXOkZCXqimPrbGzkJOTjQO5pPlP3uadDTy3hQ1BeXtn7FEFE6wdb4Ow== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=JkkDQtRKmGceL1ZsLQ1P5333rr3ROATXVjRguKciuvI=; b=YwPpyIEfU1aOgTtdI4fdGHl/WEczhs+ApESwqLdMCFNkvme5VQzprnyUSqY1O/pksTYDv0lLhP07Ouu5fxAzoADjfL8eyuZwzGrGUiUYwbeVD0crQmVQkSFDpNOvivxGrK357QyvFto/uT5dfV7d3/px8om2uFIZ6PaxgB1gL3mdDVWBy8IoAXGXRshRtsQF8qZEs7YoNbSq6z/aUg4SnV42lX7vhmA6+V6wJtNQ4CF1Fz1ar0/DstJkG4FKZ/TzMvoanAQBvOzdrscVtBmqBtev7xHfgikH1KuEJJCkYFt0rozqqrys30rHsPOzpeCyBqvzdlRlDjLs5s+ZefyjIw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=csgroup.eu; dmarc=pass action=none header.from=csgroup.eu; dkim=pass header.d=csgroup.eu; arc=none Received: from MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:31::15) by MR1P264MB2161.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:14::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4801.15; Mon, 20 Dec 2021 16:38:16 +0000 Received: from MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM ([fe80::f0ef:856d:b0de:e85d]) by MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM ([fe80::f0ef:856d:b0de:e85d%5]) with mapi id 15.20.4801.020; Mon, 20 Dec 2021 16:38:16 +0000 From: Christophe Leroy <christophe.leroy@csgroup.eu> To: Josh Poimboeuf <jpoimboe@redhat.com>, Jiri Kosina <jikos@kernel.org>, Miroslav Benes <mbenes@suse.cz>, Petr Mladek <pmladek@suse.com>, Joe Lawrence <joe.lawrence@redhat.com>, Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@redhat.com>, "Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com> Subject: [PATCH v2 05/13] powerpc/ftrace: Don't save again LR in ftrace_regs_caller() on PPC32 Thread-Topic: [PATCH v2 05/13] powerpc/ftrace: Don't save again LR in ftrace_regs_caller() on PPC32 Thread-Index: AQHX9b/8mCCoJBJvIE2Q4/L/0ycWxA== Date: Mon, 20 Dec 2021 16:38:16 +0000 Message-ID: <eadcfc770b4f1e35535ffb85e28e858a2c31dec4.1640017960.git.christophe.leroy@csgroup.eu> References: <cover.1640017960.git.christophe.leroy@csgroup.eu> In-Reply-To: <cover.1640017960.git.christophe.leroy@csgroup.eu> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=csgroup.eu; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 5c00445e-df51-4032-78c3-08d9c3d71f80 x-ms-traffictypediagnostic: MR1P264MB2161:EE_ x-microsoft-antispam-prvs: <MR1P264MB21611AF04DD6128F8AB245DAED7B9@MR1P264MB2161.FRAP264.PROD.OUTLOOK.COM> x-ms-oob-tlc-oobclassifiers: OLM:3383; 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| Series |
Implement livepatch on PPC32 and more
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expand
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diff --git a/arch/powerpc/kernel/trace/ftrace_32.S b/arch/powerpc/kernel/trace/ftrace_32.S index 0a02c0cb12d9..7e2fd729116b 100644 --- a/arch/powerpc/kernel/trace/ftrace_32.S +++ b/arch/powerpc/kernel/trace/ftrace_32.S @@ -53,9 +53,6 @@ _GLOBAL(ftrace_stub) blr _GLOBAL(ftrace_regs_caller) - /* Save the original return address in A's stack frame */ - stw r0,LRSAVE(r1) - /* Create our stack frame + pt_regs */ stwu r1,-INT_FRAME_SIZE(r1)
PPC32 mcount() caller already saves LR on stack, no need to save it again. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/kernel/trace/ftrace_32.S | 3 --- 1 file changed, 3 deletions(-)