From: Alex Thorlton <athorlton@sgi.com>
To: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Matt Fleming <matt@console-pimps.org>,
Russ Anderson <rja@sgi.com>,
linux-kernel@vger.kernel.org
Subject: Re: [BUG] Linux 3.14 fails to boot with new EFI changes
Date: Thu, 30 Jan 2014 16:19:50 -0600 [thread overview]
Message-ID: <20140130221950.GJ3105@sgi.com> (raw)
In-Reply-To: <20140129141822.GC24887@pd.tnic>
Re-adding lkml.
Here's what we've got as far as your questions go (snipped from an
e-mail from Russ):
<snip>
> * what kind of a pointer is that, physical address, or?
The quick answer is I think it is a virtual address, because
it does not work in physical mode. If you ever see "virtefi"
on the RHEL bootline it is because RH switched the default
to physical mode, which caused UV to not boot. "virtefi"
forced it back to virtual mode.
> * does it get switched to a virtual address after
> SetVirtualAddressMap()?
I believe SetVirtualAddressMap() creates the virtual mappings,
but I would have to look at the code to be sure.
> * Which region in your UEFI map contains that function, what are the
> modalities about mapping it?
Not sure about the region. The MMRs are in a uncached range
and the functions are cached marked executable. But have to
double check on that.
</snip>
> * Anything else I should know?
Probably, but nothing that's jumping out at us right now :)
Let us know if you need anything else.
Thanks!
- Alex
next parent reply other threads:[~2014-01-30 22:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <52E2ADB1.2030007@zytor.com>
[not found] ` <20140124183730.GC11788@pd.tnic>
[not found] ` <20140124184842.GD11788@pd.tnic>
[not found] ` <20140124191709.GT18196@sgi.com>
[not found] ` <20140127222129.GK6839@pd.tnic>
[not found] ` <20140128110552.GA815@pd.tnic>
[not found] ` <20140128200754.GZ18196@sgi.com>
[not found] ` <20140128225905.GN815@pd.tnic>
[not found] ` <20140128234036.GB18196@sgi.com>
[not found] ` <20140129141822.GC24887@pd.tnic>
2014-01-30 22:19 ` Alex Thorlton [this message]
2014-01-30 22:23 ` [BUG] Linux 3.14 fails to boot with new EFI changes H. Peter Anvin
2014-01-31 10:07 ` Borislav Petkov
2014-01-31 14:02 ` Russ Anderson
2014-01-31 14:23 ` Borislav Petkov
2014-01-31 14:36 ` Borislav Petkov
2014-02-05 21:45 ` Alex Thorlton
2014-02-05 23:15 ` Borislav Petkov
2014-02-11 22:19 ` Alex Thorlton
2014-02-11 22:36 ` Borislav Petkov
2014-01-31 8:04 ` Matt Fleming
2014-01-31 13:53 ` Russ Anderson
2014-01-23 22:11 Alex Thorlton
2014-01-23 22:48 ` Borislav Petkov
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