From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751922AbaEZIkA (ORCPT ); Mon, 26 May 2014 04:40:00 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53858 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750914AbaEZIj6 (ORCPT ); Mon, 26 May 2014 04:39:58 -0400 Date: Mon, 26 May 2014 16:39:35 +0800 From: Dave Young To: matt.fleming@intel.com, bp@alien8.de, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, vgoyal@redhat.com Subject: [PATCH] export efi.flags to sysfs Message-ID: <20140526083935.GA19682@dhcp-16-198.nay.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For efi=old_map and any old_map quirks like SGI UV in current tree kexec/kdump will fail because it depends on the new 1:1 mapping. Thus export the mapping method to sysfs so kexec tools can switch to original way to boot. Since we have efi.flags for all efi facilities so let's just export the efi.flags itself, it maybe useful for other arches and use cases. Signed-off-by: Dave Young --- drivers/firmware/efi/efi.c | 3 +++ 1 file changed, 3 insertions(+) Index: linux-2.6/drivers/firmware/efi/efi.c =================================================================== --- linux-2.6.orig/drivers/firmware/efi/efi.c +++ linux-2.6/drivers/firmware/efi/efi.c @@ -86,16 +86,19 @@ static ssize_t name##_show(struct kobjec EFI_ATTR_SHOW(fw_vendor); EFI_ATTR_SHOW(runtime); EFI_ATTR_SHOW(config_table); +EFI_ATTR_SHOW(flags); static struct kobj_attribute efi_attr_fw_vendor = __ATTR_RO(fw_vendor); static struct kobj_attribute efi_attr_runtime = __ATTR_RO(runtime); static struct kobj_attribute efi_attr_config_table = __ATTR_RO(config_table); +static struct kobj_attribute efi_attr_flags = __ATTR_RO(flags); static struct attribute *efi_subsys_attrs[] = { &efi_attr_systab.attr, &efi_attr_fw_vendor.attr, &efi_attr_runtime.attr, &efi_attr_config_table.attr, + &efi_attr_flags.attr, NULL, };