From patchwork Wed Sep 19 07:38:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 10605425 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD14D112B for ; Wed, 19 Sep 2018 07:31:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AA2562BC24 for ; Wed, 19 Sep 2018 07:31:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9E3AA2BA1F; Wed, 19 Sep 2018 07:31:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3CB3D2BB69 for ; Wed, 19 Sep 2018 07:31:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730863AbeISNIW (ORCPT ); Wed, 19 Sep 2018 09:08:22 -0400 Received: from mga18.intel.com ([134.134.136.126]:8163 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726986AbeISNIW (ORCPT ); Wed, 19 Sep 2018 09:08:22 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Sep 2018 00:31:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,393,1531810800"; d="scan'208";a="91367381" Received: from chenyu-desktop.sh.intel.com ([10.239.160.116]) by fmsmga001.fm.intel.com with ESMTP; 19 Sep 2018 00:31:41 -0700 From: Chen Yu To: Thomas Gleixner , "Rafael J. Wysocki" Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Pavel Machek , Len Brown , Zhimin Gu , Yu Chen Subject: [PATCH 03/12][RFC v3] x86-32/asm/power: Create stack frames in hibernate_asm_32.S Date: Wed, 19 Sep 2018 15:38:25 +0800 Message-Id: <19aed6bb376b47f672800b4c59da07efca0f9e5a.1537275915.git.yu.c.chen@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Zhimin Gu Backport Commit ef0f3ed5a4ac (x86/asm/power: Create stack frames in hibernate_asm_64.S) and Commit 4ce827b4cc58 (x86/power/64: Fix hibernation return address corruption) And also prepare for relocated code and jump address mapping. Cc: "Rafael J. Wysocki" Signed-off-by: Zhimin Gu Signed-off-by: Chen Yu --- arch/x86/include/asm/suspend_32.h | 4 ++++ arch/x86/power/hibernate_asm_32.S | 9 +++++++++ 2 files changed, 13 insertions(+) diff --git a/arch/x86/include/asm/suspend_32.h b/arch/x86/include/asm/suspend_32.h index 8be6afb58471..fdbd9d7b7bca 100644 --- a/arch/x86/include/asm/suspend_32.h +++ b/arch/x86/include/asm/suspend_32.h @@ -32,4 +32,8 @@ struct saved_context { unsigned long return_address; } __attribute__((packed)); +/* routines for saving/restoring kernel state */ +extern char core_restore_code[]; +extern char restore_registers[]; + #endif /* _ASM_X86_SUSPEND_32_H */ diff --git a/arch/x86/power/hibernate_asm_32.S b/arch/x86/power/hibernate_asm_32.S index 6e56815e13a0..671d38d0d931 100644 --- a/arch/x86/power/hibernate_asm_32.S +++ b/arch/x86/power/hibernate_asm_32.S @@ -12,6 +12,7 @@ #include #include #include +#include .text @@ -24,8 +25,11 @@ ENTRY(swsusp_arch_suspend) pushfl popl saved_context_eflags + FRAME_BEGIN call swsusp_save + FRAME_END ret +ENDPROC(swsusp_arch_suspend) ENTRY(restore_image) movl mmu_cr4_features, %ecx @@ -58,6 +62,10 @@ copy_loop: .p2align 4,,7 done: + + /* code below belongs to the image kernel */ + .align PAGE_SIZE +ENTRY(restore_registers) /* go back to the original page tables */ movl $swapper_pg_dir, %eax subl $__PAGE_OFFSET, %eax @@ -83,3 +91,4 @@ done: xorl %eax, %eax ret +ENDPROC(restore_registers)