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 for kexec@lists.infradead.org; Wed, 27 Aug 2014 13:05:01 +0000
Date: Wed, 27 Aug 2014 09:04:39 -0400
From: Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [PATCH V2] kexec: Provide an option to use new kexec system call
Message-ID: <20140827130438.GA6744@redhat.com>
References: <20140818152232.GA7525@redhat.com>
 <20140826143034.GD9081@redhat.com>
 <20140827075936.GA5936@verge.net.au>
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To: Simon Horman <horms@verge.net.au>
Cc: Kexec Mailing List <kexec@lists.infradead.org>, Dave Young <dyoung@redhat.com>, Baoquan He <bhe@redhat.com>, WANG Chao <chaowang@redhat.com>

On Wed, Aug 27, 2014 at 04:59:37PM +0900, Simon Horman wrote:
> On Tue, Aug 26, 2014 at 10:30:34AM -0400, Vivek Goyal wrote:
> > On Mon, Aug 18, 2014 at 11:22:32AM -0400, Vivek Goyal wrote:
> > > Hi,
> > > 
> > > This is v2 of the patch. Since v1, I moved syscall implemented check littler
> > > earlier in the function as per the feedback.
> > > 
> > > Now a new kexec syscall (kexec_file_load()) has been merged in upstream
> > > kernel. This system call takes file descriptors of kernel and initramfs
> > > as input (as opposed to list of segments to be loaded). This new system
> > > call allows for signature verification of the kernel being loaded.
> > > 
> > > One use of signature verification of kernel is secureboot systems where
> > > we want to allow kexec into a kernel only if it is validly signed by
> > > a key system trusts.
> > > 
> > > This patch provides and option --kexec-file-syscall (-s), to force use of
> > > new system call for kexec. Default is to continue to use old syscall.
> > > 
> > > Currently only bzImage64 on x86_64 can be loaded using this system call.
> > > As kernel adds support for more arches and for more image types, kexec-tools
> > > can be modified accordingly.
> > > 
> > 
> > Hi Simon,
> > 
> > Do you have any concerns with this patch? If not, can you please consider
> > it for merge.
> 
> Thanks, applied.

Thanks Simon. Have you pushed it out yet. git pull does not show anything.

Thanks
Vivek

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