linux-kernel - Re: [Xen-devel] [PATCH v3 00/11] xen: Initial kexec/kdump implementation

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Date:	Fri, 11 Jan 2013 15:43:18 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Daniel Kiper <daniel.kiper@...cle.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>,
	"mingo@...hat.com" <mingo@...hat.com>,
	Jan Beulich <JBeulich@...e.com>,
	"maxim.uvarov@...cle.com" <maxim.uvarov@...cle.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [Xen-devel] [PATCH v3 00/11] xen: Initial kexec/kdump
 implementation

On Fri, Jan 11, 2013 at 12:26:48PM -0800, H. Peter Anvin wrote:
> >
> >And there is nothing fancy to be done for EFI and SecureBoot? Or is
> >that something that the kernel has to handle on its own (so somehow
> >passing some certificates to somewhere).
> >
> 
> For EFI, no... other than passing the EFI parameters, which
> apparently is *not* currently done (David Woodhouse is working on
> it.)  Secure boot is still a work in progress.

For secureboot, as a first step in that direction, I just wrote some code
to sign elf executable and be able to verify it in kernel upon exec(). I
am soon planning to post RFC code (most likely next week).

Hopefully we will be able to sign statically signed /sbin/kexec, give
it extra capability (upon signature verification) to be able to call
sys_exec().

Thanks
Vivek
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