Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965615Ab3DPXRO (ORCPT ); Tue, 16 Apr 2013 19:17:14 -0400 Received: from cantor2.suse.de ([195.135.220.15]:56005 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965585Ab3DPXRN (ORCPT ); Tue, 16 Apr 2013 19:17:13 -0400 Date: Wed, 17 Apr 2013 01:16:35 +0200 (CEST) From: Jiri Kosina X-X-Sender: jikos@twin.jikos.cz To: Richard Weinberger Cc: matt.fleming@intel.com, cbouatmailru@gmail.com, ccross@android.com, keescook@chromium.org, tony.luck@intel.com, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, matthew.garrett@nebula.com Subject: Re: [PATCH] x86,efi: Implement efi_no_storage_paranoia parameter In-Reply-To: <1366153253-28572-1-git-send-email-richard@nod.at> Message-ID: References: <1366153253-28572-1-git-send-email-richard@nod.at> User-Agent: Alpine 2.00 (LRH 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2014 Lines: 54 On Wed, 17 Apr 2013, Richard Weinberger wrote: > Using this parameter one can disable the storage_size/2 check if > he is really sure that the UEFI does sane gc and fulfills the spec. > > This parameter is useful if a devices uses more than 50% of the > storage by default. > The Intel DQSW67 desktop board is such a sucker for exmaple. > > Signed-off-by: Richard Weinberger > --- > Documentation/kernel-parameters.txt | 6 ++++++ > arch/x86/platform/efi/efi.c | 15 ++++++++++++++- > 2 files changed, 20 insertions(+), 1 deletion(-) > > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > index 4609e81..d1cc3a9 100644 > --- a/Documentation/kernel-parameters.txt > +++ b/Documentation/kernel-parameters.txt > @@ -788,6 +788,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. > edd= [EDD] > Format: {"off" | "on" | "skip[mbr]"} > > + efi_no_storage_paranoia [EFI; X86] > + Using this parameter you can use more than 50% of > + your efi variable storage. Use this parameter only if > + you are really sure that your UEFI does sane gc and > + fulfills the spec otherwise your board may brick. > + > eisa_irq_edge= [PARISC,HW] > See header of drivers/parisc/eisa.c. > > diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c > index 4959e3f..07524e1 100644 > --- a/arch/x86/platform/efi/efi.c > +++ b/arch/x86/platform/efi/efi.c > @@ -113,6 +113,16 @@ static int __init setup_add_efi_memmap(char *arg) > } > early_param("add_efi_memmap", setup_add_efi_memmap); > > +static bool efi_no_storage_paranoia; > +EXPORT_SYMBOL_GPL(efi_no_storage_paranoia); Is there any particular reason to export this symbol? -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/