From: Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
To: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Cc: Matt Fleming
<matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>,
Linux EFI <linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>,
X86-ML <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Borislav Petkov <bp-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter
Date: Thu, 6 Jun 2013 20:54:50 +0100 [thread overview]
Message-ID: <20130606195450.GA3252@srcf.ucam.org> (raw)
In-Reply-To: <20130606194134.GN20972-fF5Pk5pvG8Y@public.gmane.org>
On Thu, Jun 06, 2013 at 09:41:34PM +0200, Borislav Petkov wrote:
> On Thu, Jun 06, 2013 at 08:35:48PM +0100, Matthew Garrett wrote:
> > No, I think that's the wrong thing to do. We should set up the current
> > mappings and the 1:1 mappings, and pass the current mappings through
> > SetVirtualAddressMap(). That matches the behaviour of Windows.
>
> And when do we use the 1:1 mappings and when the current mappings when
> doing runtime calls?
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...
--
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org
next prev parent reply other threads:[~2013-06-06 19:54 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
[not found] ` <1370177770-26661-1-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-06-02 12:56 ` [PATCH 1/4] efi: Convert runtime services function ptrs Borislav Petkov
2013-06-06 10:07 ` Matt Fleming
[not found] ` <20130606100745.GF30420-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-11 6:49 ` Matt Fleming
[not found] ` <20130611064912.GG31198-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-11 9:33 ` Borislav Petkov
2013-06-02 12:56 ` [PATCH 2/4] x86, cpa: Map in an arbitrary pgd Borislav Petkov
[not found] ` <1370177770-26661-3-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-06-06 10:22 ` Matt Fleming
[not found] ` <20130606102233.GG30420-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-06 13:24 ` Borislav Petkov
2013-06-06 13:30 ` Matt Fleming
[not found] ` <20130606133023.GJ30420-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
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
[not found] ` <1370177770-26661-4-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-06-04 12:18 ` Borislav Petkov
2013-06-06 10:42 ` Matt Fleming
[not found] ` <20130606104224.GH30420-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-06 13:26 ` Borislav Petkov
[not found] ` <20130606132603.GD20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 13:36 ` Matt Fleming
2013-06-06 17:50 ` Matthew Garrett
[not found] ` <20130606175052.GA1285-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-06 18:51 ` Borislav Petkov
[not found] ` <20130606185140.GK20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 19:35 ` Matthew Garrett
[not found] ` <20130606193548.GA2946-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-06 19:41 ` Borislav Petkov
[not found] ` <20130606194134.GN20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 19:54 ` Matthew Garrett [this message]
2013-06-06 20:07 ` Borislav Petkov
[not found] ` <20130606200705.GO20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 20:18 ` Matthew Garrett
2013-06-06 20:27 ` Borislav Petkov
[not found] ` <20130606202717.GP20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 20:30 ` Matthew Garrett
[not found] ` <20130606203057.GA4237-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-06 20:44 ` Borislav Petkov
[not found] ` <20130606204410.GQ20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 20:50 ` Matthew Garrett
[not found] ` <20130606205057.GA4363-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-06 21:02 ` Borislav Petkov
[not found] ` <20130606210218.GR20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 21:03 ` Matthew Garrett
2013-06-02 12:56 ` [PATCH 4/4] x86, efi: Map runtime services 1:1 Borislav Petkov
[not found] ` <1370177770-26661-5-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2013-06-06 13:14 ` Matt Fleming
[not found] ` <20130606131439.GI30420-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-06 13:29 ` Borislav Petkov
[not found] ` <20130606132908.GE20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 15:58 ` Borislav Petkov
2013-06-06 19:28 ` H. Peter Anvin
[not found] ` <51B0E2D4.3040007-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-06-06 19:36 ` Borislav Petkov
[not found] ` <20130606193612.GM20972-fF5Pk5pvG8Y@public.gmane.org>
2013-06-06 19:38 ` H. Peter Anvin
[not found] ` <51B0E522.4070005-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-06-10 12:55 ` Borislav Petkov
2013-06-02 22:56 ` [PATCH 0/4] EFI 1:1 mapping Matthew Garrett
[not found] ` <20130602225620.GA5496-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-03 8:11 ` Borislav Petkov
[not found] ` <20130603081148.GB13607-K5JNixvcfoxupOikMc4+xw@public.gmane.org>
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
[not found] ` <20130603162435.GA22563-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-03 16:35 ` James Bottomley
2013-06-03 16:42 ` Matthew Garrett
[not found] ` <20130603164237.GA23146-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-03 18:05 ` James Bottomley
2013-06-03 18:11 ` Matthew Garrett
[not found] ` <20130603181110.GA25060-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
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
[not found] ` <20130603143252.GB20252-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2013-06-03 14:54 ` Matt Fleming
[not found] ` <20130603145412.GJ2004-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2013-06-04 8:15 ` Borislav Petkov
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