From: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
To: Leif Lindholm <leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>,
Matt Fleming
<matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>,
Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"H. Peter Anvin" <hpa-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH 1/4] Documentation: arm: [U]EFI runtime services
Date: Thu, 27 Jun 2013 15:38:01 +0100 [thread overview]
Message-ID: <20130627143801.GB12900@srcf.ucam.org> (raw)
In-Reply-To: <20130627090050.GC18151-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
On Thu, Jun 27, 2013 at 11:00:50AM +0200, Leif Lindholm wrote:
> On Thu, Jun 27, 2013 at 02:32:19AM +0100, Matthew Garrett wrote:
> > We can probably get away with that now, but it does risk us ending up
> > with some firmware that expects to run in physical mode (boards designed
> > for Linux) and some firmware that expects to run in virtual mode (boards
> > designed for Windows). The degree of lockdown in the Windows ecosystem
> > at present means it's not a real problem at the moment, but if that ever
> > changes we're going to risk incompatibility.
>
> Is there anything preventing calling SetVirtualAddressMap() with a
> 1:1 map?
No, but we've seen bugs as a result on some x86 systems. As far as the
spec, though, you're fine.
--
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org
WARNING: multiple messages have this Message-ID (diff)
From: mjg59@srcf.ucam.org (Matthew Garrett)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/4] Documentation: arm: [U]EFI runtime services
Date: Thu, 27 Jun 2013 15:38:01 +0100 [thread overview]
Message-ID: <20130627143801.GB12900@srcf.ucam.org> (raw)
In-Reply-To: <20130627090050.GC18151@rocoto.smurfnet.nu>
On Thu, Jun 27, 2013 at 11:00:50AM +0200, Leif Lindholm wrote:
> On Thu, Jun 27, 2013 at 02:32:19AM +0100, Matthew Garrett wrote:
> > We can probably get away with that now, but it does risk us ending up
> > with some firmware that expects to run in physical mode (boards designed
> > for Linux) and some firmware that expects to run in virtual mode (boards
> > designed for Windows). The degree of lockdown in the Windows ecosystem
> > at present means it's not a real problem at the moment, but if that ever
> > changes we're going to risk incompatibility.
>
> Is there anything preventing calling SetVirtualAddressMap() with a
> 1:1 map?
No, but we've seen bugs as a result on some x86 systems. As far as the
spec, though, you're fine.
--
Matthew Garrett | mjg59 at srcf.ucam.org
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Leif Lindholm <leif.lindholm@linaro.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Matt Fleming <matt@console-pimps.org>,
Grant Likely <grant.likely@secretlab.ca>,
Stephen Warren <swarren@wwwdotorg.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
linux-efi@vger.kernel.org,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"patches@linaro.org" <patches@linaro.org>,
"H. Peter Anvin" <hpa@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
matt.fleming@intel.com
Subject: Re: [PATCH 1/4] Documentation: arm: [U]EFI runtime services
Date: Thu, 27 Jun 2013 15:38:01 +0100 [thread overview]
Message-ID: <20130627143801.GB12900@srcf.ucam.org> (raw)
In-Reply-To: <20130627090050.GC18151@rocoto.smurfnet.nu>
On Thu, Jun 27, 2013 at 11:00:50AM +0200, Leif Lindholm wrote:
> On Thu, Jun 27, 2013 at 02:32:19AM +0100, Matthew Garrett wrote:
> > We can probably get away with that now, but it does risk us ending up
> > with some firmware that expects to run in physical mode (boards designed
> > for Linux) and some firmware that expects to run in virtual mode (boards
> > designed for Windows). The degree of lockdown in the Windows ecosystem
> > at present means it's not a real problem at the moment, but if that ever
> > changes we're going to risk incompatibility.
>
> Is there anything preventing calling SetVirtualAddressMap() with a
> 1:1 map?
No, but we've seen bugs as a result on some x86 systems. As far as the
spec, though, you're fine.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2013-06-27 14:38 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-25 18:10 [PATCH 0/4] arm: [U]EFI runtime services support Leif Lindholm
2013-06-25 18:10 ` Leif Lindholm
2013-06-25 18:11 ` [PATCH 1/4] Documentation: arm: [U]EFI runtime services Leif Lindholm
2013-06-25 18:11 ` Leif Lindholm
[not found] ` <1372183863-11333-2-git-send-email-leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-06-25 18:46 ` Christopher Covington
2013-06-25 18:46 ` Christopher Covington
2013-06-25 18:46 ` Christopher Covington
2013-06-25 23:42 ` Stephen Warren
2013-06-25 23:42 ` Stephen Warren
2013-06-25 23:42 ` Stephen Warren
[not found] ` <51CA2B03.4080106-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-06-26 13:20 ` Grant Likely
2013-06-26 13:20 ` Grant Likely
2013-06-26 13:20 ` Grant Likely
[not found] ` <CACxGe6vsBKnbipR-Zd1T9Ox1J2ugFmShrGXGUzPa_=D9TJvFQw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-26 13:53 ` Leif Lindholm
2013-06-26 13:53 ` Leif Lindholm
2013-06-26 13:53 ` Leif Lindholm
[not found] ` <20130626135311.GA9078-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
2013-06-26 13:59 ` Matt Fleming
2013-06-26 13:59 ` Matt Fleming
2013-06-26 13:59 ` Matt Fleming
2013-06-26 14:38 ` James Bottomley
2013-06-26 14:38 ` James Bottomley
2013-06-27 1:32 ` Matthew Garrett
2013-06-27 1:32 ` Matthew Garrett
2013-06-27 6:23 ` Grant Likely
2013-06-27 6:23 ` Grant Likely
2013-06-27 6:33 ` James Bottomley
2013-06-27 6:33 ` James Bottomley
2013-06-27 6:33 ` James Bottomley
2013-06-27 14:37 ` Matthew Garrett
2013-06-27 14:37 ` Matthew Garrett
2013-06-27 15:09 ` James Bottomley
2013-06-27 15:09 ` James Bottomley
2013-06-27 15:37 ` Grant Likely
2013-06-27 15:37 ` Grant Likely
2013-06-27 15:37 ` Grant Likely
2013-06-27 17:28 ` Matthew Garrett
2013-06-27 17:28 ` Matthew Garrett
2013-06-27 14:54 ` Grant Likely
2013-06-27 14:54 ` Grant Likely
2013-06-27 14:54 ` Grant Likely
2013-06-27 15:04 ` James Bottomley
2013-06-27 15:04 ` James Bottomley
2013-06-27 18:32 ` Russell King - ARM Linux
2013-06-27 18:32 ` Russell King - ARM Linux
2013-06-27 18:32 ` Russell King - ARM Linux
2013-06-27 9:00 ` Leif Lindholm
2013-06-27 9:00 ` Leif Lindholm
[not found] ` <20130627090050.GC18151-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
2013-06-27 14:38 ` Matthew Garrett [this message]
2013-06-27 14:38 ` Matthew Garrett
2013-06-27 14:38 ` Matthew Garrett
2013-06-27 18:32 ` H. Peter Anvin
2013-06-27 18:32 ` H. Peter Anvin
2013-06-26 18:32 ` Stephen Warren
2013-06-26 18:32 ` Stephen Warren
2013-06-26 19:31 ` Leif Lindholm
2013-06-26 19:31 ` Leif Lindholm
[not found] ` <20130626193158.GF9078-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
2013-06-27 18:04 ` Stephen Warren
2013-06-27 18:04 ` Stephen Warren
2013-06-27 18:04 ` Stephen Warren
2013-06-27 20:11 ` Grant Likely
2013-06-27 20:11 ` Grant Likely
2013-06-30 3:21 ` Rob Landley
2013-06-30 3:21 ` Rob Landley
2013-06-30 3:21 ` Rob Landley
2013-06-26 13:13 ` Grant Likely
2013-06-26 13:13 ` Grant Likely
[not found] ` <CACxGe6tUpo31p6N0BZt_jdonuPP8ijvLBygC76wQ044EFsqOwA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-26 14:04 ` Leif Lindholm
2013-06-26 14:04 ` Leif Lindholm
2013-06-26 14:04 ` Leif Lindholm
[not found] ` <20130626140459.GB9078-GZEopFhza0F985/tl1ce8aaDwS/vmuI7@public.gmane.org>
2013-06-26 14:35 ` Grant Likely
2013-06-26 14:35 ` Grant Likely
2013-06-26 14:35 ` Grant Likely
2013-06-27 14:22 ` Arnd Bergmann
2013-06-27 14:22 ` Arnd Bergmann
2013-06-27 14:22 ` Arnd Bergmann
2013-06-25 18:11 ` [PATCH 2/4] x86: efi: break efi_lookup_mapped_addr out to generic code Leif Lindholm
2013-06-25 18:11 ` Leif Lindholm
2013-06-26 13:30 ` Grant Likely
2013-06-26 13:30 ` Grant Likely
[not found] ` <1372183863-11333-3-git-send-email-leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-06-26 13:32 ` Matt Fleming
2013-06-26 13:32 ` Matt Fleming
2013-06-26 13:32 ` Matt Fleming
[not found] ` <20130626133217.GO22026-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-26 14:11 ` Leif Lindholm
2013-06-26 14:11 ` Leif Lindholm
2013-06-26 14:11 ` Leif Lindholm
2013-06-26 14:40 ` Matt Fleming
2013-06-26 14:40 ` Matt Fleming
[not found] ` <1372183863-11333-1-git-send-email-leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-06-25 18:11 ` [PATCH 3/4] arm: Add [U]EFI runtime services support Leif Lindholm
2013-06-25 18:11 ` Leif Lindholm
2013-06-25 18:11 ` Leif Lindholm
2013-06-25 18:20 ` Matthew Garrett
2013-06-25 18:20 ` Matthew Garrett
[not found] ` <20130625182021.GA29955-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-26 13:46 ` Grant Likely
2013-06-26 13:46 ` Grant Likely
2013-06-26 13:46 ` Grant Likely
[not found] ` <1372183863-11333-4-git-send-email-leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-06-26 13:46 ` Grant Likely
2013-06-26 13:46 ` Grant Likely
2013-06-26 13:46 ` Grant Likely
[not found] ` <CACxGe6sH4dAVryBp7TeUmrwsJmnMdLsQm++U4EVDJVNi9pnqYw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-26 13:54 ` Matt Fleming
2013-06-26 13:54 ` Matt Fleming
2013-06-26 13:54 ` Matt Fleming
[not found] ` <20130626135417.GP22026-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-26 14:15 ` Borislav Petkov
2013-06-26 14:15 ` Borislav Petkov
2013-06-26 14:15 ` Borislav Petkov
2013-06-26 14:35 ` Grant Likely
2013-06-26 14:35 ` Grant Likely
2013-06-26 14:22 ` Leif Lindholm
2013-06-26 14:22 ` Leif Lindholm
2013-06-26 14:22 ` Leif Lindholm
2013-06-25 18:11 ` [PATCH 4/4] init: efi: arm: enable (U)EFI runtime services on arm Leif Lindholm
2013-06-25 18:11 ` Leif Lindholm
[not found] ` <1372183863-11333-5-git-send-email-leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2013-06-26 13:24 ` Grant Likely
2013-06-26 13:24 ` Grant Likely
2013-06-26 13:24 ` Grant Likely
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