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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT 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 BB784C004C9 for ; Tue, 7 May 2019 06:06:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F577205C9 for ; Tue, 7 May 2019 06:06:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557209174; bh=03GaiAtYzY09njXPIqenCXIBIX9FGb+c3b6xKyYkjRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DUxRlb1USej3T76a3PXPTC3myiDCxcJIdFVv1sLrvpterVv4XcmGS2aAws6Wu94L8 ArawGpTw6GFLS1BRnOAdC062SA3v4rKELCY+KEza0UnMgY1etL2+9Q1+2lTgOG+GEE xdhhvE3CSSRaKSOu33kXk2al3BK71SKyBb6cnvd0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726930AbfEGGGM (ORCPT ); Tue, 7 May 2019 02:06:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:53858 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726427AbfEGFd6 (ORCPT ); Tue, 7 May 2019 01:33:58 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 52EAD214AE; Tue, 7 May 2019 05:33:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557207237; bh=03GaiAtYzY09njXPIqenCXIBIX9FGb+c3b6xKyYkjRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=w2gcApx2NM3iSQV/DVtvZwGi59OZZN1yWU8+8z8SGrkfIiKEj+KLgSC34WE10Nco1 85plcTIuKicIfdY39qTYUcs6ObvcrVRQTYeSZEypNUDw3+Sn1cINIPD2MW44qhbl+c bJuRYtTaGJX771FRSNdjCC+8yAqEVsLHWSZD9pN4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jian-Hong Pan , Daniel Drake , Ard Biesheuvel , Borislav Petkov , Linus Torvalds , Matt Fleming , Peter Zijlstra , Thomas Gleixner , linux-efi@vger.kernel.org, linux@endlessm.com, Ingo Molnar , Sasha Levin Subject: [PATCH AUTOSEL 5.0 42/99] x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T Date: Tue, 7 May 2019 01:31:36 -0400 Message-Id: <20190507053235.29900-42-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190507053235.29900-1-sashal@kernel.org> References: <20190507053235.29900-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jian-Hong Pan [ Upstream commit 0082517fa4bce073e7cf542633439f26538a14cc ] Upon reboot, the Acer TravelMate X514-51T laptop appears to complete the shutdown process, but then it hangs in BIOS POST with a black screen. The problem is intermittent - at some points it has appeared related to Secure Boot settings or different kernel builds, but ultimately we have not been able to identify the exact conditions that trigger the issue to come and go. Besides, the EFI mode cannot be disabled in the BIOS of this model. However, after extensive testing, we observe that using the EFI reboot method reliably avoids the issue in all cases. So add a boot time quirk to use EFI reboot on such systems. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=203119 Signed-off-by: Jian-Hong Pan Signed-off-by: Daniel Drake Cc: Ard Biesheuvel Cc: Borislav Petkov Cc: Linus Torvalds Cc: Matt Fleming Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-efi@vger.kernel.org Cc: linux@endlessm.com Link: http://lkml.kernel.org/r/20190412080152.3718-1-jian-hong@endlessm.com [ Fix !CONFIG_EFI build failure, clarify the code and the changelog a bit. ] Signed-off-by: Ingo Molnar Signed-off-by: Sasha Levin --- arch/x86/kernel/reboot.c | 21 +++++++++++++++++++++ include/linux/efi.h | 7 ++++++- 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 725624b6c0c0..8fd3cedd9acc 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -81,6 +81,19 @@ static int __init set_bios_reboot(const struct dmi_system_id *d) return 0; } +/* + * Some machines don't handle the default ACPI reboot method and + * require the EFI reboot method: + */ +static int __init set_efi_reboot(const struct dmi_system_id *d) +{ + if (reboot_type != BOOT_EFI && !efi_runtime_disabled()) { + reboot_type = BOOT_EFI; + pr_info("%s series board detected. Selecting EFI-method for reboot.\n", d->ident); + } + return 0; +} + void __noreturn machine_real_restart(unsigned int type) { local_irq_disable(); @@ -166,6 +179,14 @@ static const struct dmi_system_id reboot_dmi_table[] __initconst = { DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"), }, }, + { /* Handle reboot issue on Acer TravelMate X514-51T */ + .callback = set_efi_reboot, + .ident = "Acer TravelMate X514-51T", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate X514-51T"), + }, + }, /* Apple */ { /* Handle problems with rebooting on Apple MacBook5 */ diff --git a/include/linux/efi.h b/include/linux/efi.h index a86485ac7c87..de05a4302529 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1598,7 +1598,12 @@ efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, struct screen_info *si, efi_guid_t *proto, unsigned long size); -bool efi_runtime_disabled(void); +#ifdef CONFIG_EFI +extern bool efi_runtime_disabled(void); +#else +static inline bool efi_runtime_disabled(void) { return true; } +#endif + extern void efi_call_virt_check_flags(unsigned long flags, const char *call); enum efi_secureboot_mode { -- 2.20.1