From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH 6/6] Documentation/x86: Update EFI memory region description Date: Fri, 13 Nov 2015 10:22:10 +0100 Message-ID: <20151113092210.GB19922@gmail.com> References: <1447342823-3612-1-git-send-email-matt@codeblueprint.co.uk> <1447342823-3612-7-git-send-email-matt@codeblueprint.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1447342823-3612-7-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matt Fleming Cc: Thomas Gleixner , "H . Peter Anvin" , Toshi Kani , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Borislav Petkov , Sai Praneeth Prakhya , Linus Torvalds , Dave Jones , Andrew Morton , Andy Lutomirski , Denys Vlasenko , Stephen Smalley List-Id: linux-efi@vger.kernel.org * Matt Fleming wrote: > +We map EFI runtime services in the efi_pgd PGD in the virtual range of > +64Gb (arbitrarily set, can be raised if needed). The mappings are not > +part of any other kernel PGD and are only available during EFI runtime > +calls. Is that virtual address range 0-64Gb, i.e.: 0x00000000.00000000 - 0x00000010.00000000 or is it somewhere else? Thanks, Ingo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754594AbbKMJWT (ORCPT ); Fri, 13 Nov 2015 04:22:19 -0500 Received: from mail-wm0-f50.google.com ([74.125.82.50]:35082 "EHLO mail-wm0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750760AbbKMJWP (ORCPT ); Fri, 13 Nov 2015 04:22:15 -0500 Date: Fri, 13 Nov 2015 10:22:10 +0100 From: Ingo Molnar To: Matt Fleming Cc: Thomas Gleixner , "H . Peter Anvin" , Toshi Kani , linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, Borislav Petkov , Sai Praneeth Prakhya , Linus Torvalds , Dave Jones , Andrew Morton , Andy Lutomirski , Denys Vlasenko , Stephen Smalley Subject: Re: [PATCH 6/6] Documentation/x86: Update EFI memory region description Message-ID: <20151113092210.GB19922@gmail.com> References: <1447342823-3612-1-git-send-email-matt@codeblueprint.co.uk> <1447342823-3612-7-git-send-email-matt@codeblueprint.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1447342823-3612-7-git-send-email-matt@codeblueprint.co.uk> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Matt Fleming wrote: > +We map EFI runtime services in the efi_pgd PGD in the virtual range of > +64Gb (arbitrarily set, can be raised if needed). The mappings are not > +part of any other kernel PGD and are only available during EFI runtime > +calls. Is that virtual address range 0-64Gb, i.e.: 0x00000000.00000000 - 0x00000010.00000000 or is it somewhere else? Thanks, Ingo