From: Borislav Petkov <bp@alien8.de>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Matt Fleming <matt@console-pimps.org>,
Linux EFI <linux-efi@vger.kernel.org>,
Jiri Kosina <jkosina@suse.cz>, X86-ML <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>, Borislav Petkov <bp@suse.de>
Subject: Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter
Date: Thu, 6 Jun 2013 22:07:05 +0200 [thread overview]
Message-ID: <20130606200705.GO20972@pd.tnic> (raw)
In-Reply-To: <20130606195450.GA3252@srcf.ucam.org>
On Thu, Jun 06, 2013 at 08:54:50PM +0100, Matthew Garrett wrote:
> We want both to be available when we're making the call, but I think
> we should probably enter via the high addresses. The only reason we're
> doing this at all is that some systems don't update all of their
> pointers from physical mode, and we'd prefer them to work rather than
> fault...
Actually, we do the 1:1 thing so that EFI runtime works in a kexec
kernel too. Which won't work if we use the high addresses.
However, if we can use the 1:1 map *after* SetVirtualAddressMap() has
been called with the high mappings, then my issue is solved - we drop
to using 1:1 in the kexec kernel only. But I don't think that is the
case...
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2013-06-06 20:07 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-02 12:56 [PATCH 0/4] EFI 1:1 mapping Borislav Petkov
2013-06-02 12:56 ` [PATCH 1/4] efi: Convert runtime services function ptrs Borislav Petkov
2013-06-06 10:07 ` Matt Fleming
2013-06-11 6:49 ` Matt Fleming
2013-06-11 9:33 ` Borislav Petkov
2013-06-02 12:56 ` [PATCH 2/4] x86, cpa: Map in an arbitrary pgd Borislav Petkov
2013-06-06 10:22 ` Matt Fleming
2013-06-06 13:24 ` Borislav Petkov
2013-06-06 13:30 ` Matt Fleming
2013-06-06 13:33 ` Borislav Petkov
2013-06-02 12:56 ` [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter Borislav Petkov
2013-06-04 12:18 ` Borislav Petkov
2013-06-06 10:42 ` Matt Fleming
2013-06-06 13:26 ` Borislav Petkov
2013-06-06 13:36 ` Matt Fleming
2013-06-06 17:50 ` Matthew Garrett
2013-06-06 18:51 ` Borislav Petkov
2013-06-06 19:35 ` Matthew Garrett
2013-06-06 19:41 ` Borislav Petkov
2013-06-06 19:54 ` Matthew Garrett
2013-06-06 20:07 ` Borislav Petkov [this message]
2013-06-06 20:18 ` Matthew Garrett
2013-06-06 20:27 ` Borislav Petkov
2013-06-06 20:30 ` Matthew Garrett
2013-06-06 20:44 ` Borislav Petkov
2013-06-06 20:50 ` Matthew Garrett
2013-06-06 21:02 ` Borislav Petkov
2013-06-06 21:03 ` Matthew Garrett
2013-06-02 12:56 ` [PATCH 4/4] x86, efi: Map runtime services 1:1 Borislav Petkov
2013-06-06 13:14 ` Matt Fleming
2013-06-06 13:29 ` Borislav Petkov
2013-06-06 15:58 ` Borislav Petkov
2013-06-06 19:28 ` H. Peter Anvin
2013-06-06 19:36 ` Borislav Petkov
2013-06-06 19:38 ` H. Peter Anvin
2013-06-10 12:55 ` Borislav Petkov
2013-06-02 22:56 ` [PATCH 0/4] EFI 1:1 mapping Matthew Garrett
2013-06-03 8:11 ` Borislav Petkov
2013-06-03 14:27 ` James Bottomley
2013-06-03 14:30 ` Matthew Garrett
2013-06-03 14:38 ` James Bottomley
2013-06-03 15:21 ` Matthew Garrett
2013-06-03 16:18 ` James Bottomley
2013-06-03 16:24 ` Matthew Garrett
2013-06-03 16:35 ` James Bottomley
2013-06-03 16:42 ` Matthew Garrett
2013-06-03 18:05 ` James Bottomley
2013-06-03 18:11 ` Matthew Garrett
2013-06-03 21:19 ` James Bottomley
2013-06-03 21:29 ` Matthew Garrett
2014-02-10 3:59 ` Linux, UEFI, and Chromebooks (was RE: [PATCH 0/4] EFI 1:1 mapping) Yuhong Bao
2013-06-03 14:32 ` [PATCH 0/4] EFI 1:1 mapping Matthew Garrett
2013-06-03 14:54 ` Matt Fleming
2013-06-04 8:15 ` Borislav Petkov
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