From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Borislav Petkov <bp@alien8.de>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Ingo Molnar <mingo@kernel.org>,
Linux EFI <linux-efi@vger.kernel.org>,
Matt Fleming <matt@console-pimps.org>, X86 ML <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>, Borislav Petkov <bp@suse.de>
Subject: Re: [PATCH -v2 0/4] EFI 1:1 mapping
Date: Thu, 20 Jun 2013 19:10:15 +0100 [thread overview]
Message-ID: <20130620181015.GA27833@srcf.ucam.org> (raw)
In-Reply-To: <20130620180808.GB19877@pd.tnic>
On Thu, Jun 20, 2013 at 08:08:08PM +0200, Borislav Petkov wrote:
> On Thu, Jun 20, 2013 at 06:12:10PM +0100, Matthew Garrett wrote:
> > On Thu, Jun 20, 2013 at 07:01:24PM +0200, Borislav Petkov wrote:
> >
> > > If we can detect the Macs, we can make this decision automatic. And
> > > since no Mac boots windoze, a single DMI check of the sort "if (Mac)"
> > > should suffice.
> >
> > Yes, we can special-case Macs. But since our behaviour is then obviously
> > different to Windows, we'll inevitably break some other system.
>
> Why different? We'll have the high mappings and shove the 1:1 mappings
> down SetVirtualAddressMap by default.
Because Windows passes high addresses to SetVirtualAddressMap(), and
because if you can imagine firmware developers getting it wrong then
firmware developers will have got it wrong.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2013-06-20 18:10 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 17:50 [PATCH -v2 0/4] EFI 1:1 mapping Borislav Petkov
2013-06-17 17:50 ` [PATCH -v2 1/4] efi: Convert runtime services function ptrs Borislav Petkov
2013-06-20 18:15 ` [PATCH] [IA64] sim: Add casts to avoid assignment warnings Luck, Tony
2013-06-20 23:43 ` Tony Luck
2013-06-21 10:26 ` Fleming, Matt
2013-06-17 17:50 ` [PATCH -v2 2/4] x86, cpa: Map in an arbitrary pgd Borislav Petkov
2013-06-17 17:50 ` [PATCH -v2 3/4] x86, efi: Add an efi= kernel command line parameter Borislav Petkov
2013-06-17 17:50 ` [PATCH -v2 4/4] x86, efi: Map runtime services 1:1 Borislav Petkov
2013-06-21 11:56 ` Matt Fleming
2013-07-03 6:19 ` joeyli
2013-06-19 12:52 ` [PATCH -v2 0/4] EFI 1:1 mapping Ingo Molnar
2013-06-19 13:02 ` Borislav Petkov
2013-06-19 13:04 ` Ingo Molnar
2013-06-19 13:25 ` Borislav Petkov
2013-06-19 16:08 ` Matthew Garrett
2013-06-19 16:18 ` Borislav Petkov
2013-06-19 16:21 ` Matthew Garrett
2013-06-19 16:38 ` Borislav Petkov
2013-06-19 16:48 ` Matthew Garrett
2013-06-19 16:59 ` Borislav Petkov
2013-06-20 21:26 ` H. Peter Anvin
2013-06-21 6:34 ` Matt Fleming
2013-06-19 16:50 ` James Bottomley
2013-06-20 9:13 ` Ingo Molnar
2013-06-20 9:15 ` Matthew Garrett
2013-06-20 9:22 ` Ingo Molnar
2013-06-20 9:33 ` Borislav Petkov
2013-06-20 9:44 ` Matthew Garrett
2013-06-20 14:33 ` Jiri Kosina
2013-06-20 14:53 ` James Bottomley
2013-06-20 16:29 ` Matthew Garrett
2013-06-20 16:44 ` Jiri Kosina
2013-06-20 16:53 ` Matthew Garrett
2013-06-20 16:46 ` James Bottomley
2013-06-20 16:54 ` Matthew Garrett
2013-06-20 17:01 ` Borislav Petkov
2013-06-20 17:12 ` Matthew Garrett
2013-06-20 18:08 ` Borislav Petkov
2013-06-20 18:10 ` Matthew Garrett [this message]
2013-06-20 18:14 ` Borislav Petkov
2013-06-20 18:17 ` Matthew Garrett
2013-06-20 18:47 ` Borislav Petkov
2013-06-20 22:35 ` H. Peter Anvin
2013-06-21 7:23 ` Borislav Petkov
2013-06-21 10:05 ` H. Peter Anvin
2013-06-21 14:21 ` Borislav Petkov
2013-06-21 16:42 ` H. Peter Anvin
2013-07-02 7:29 ` Pavel Machek
2013-06-19 16:05 ` Matthew Garrett
2013-06-19 17:25 ` H. Peter Anvin
2013-06-19 17:37 ` Borislav Petkov
2013-06-19 17:38 ` H. Peter Anvin
2013-06-19 17:50 ` Borislav Petkov
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