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From: Simon Horman <horms@verge.net.au>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Kexec Mailing List <kexec@lists.infradead.org>,
	Dave Young <dyoung@redhat.com>, Baoquan He <bhe@redhat.com>,
	WANG Chao <chaowang@redhat.com>
Subject: Re: [PATCH V2] kexec: Provide an option to use new kexec system call
Date: Wed, 27 Aug 2014 16:59:37 +0900	[thread overview]
Message-ID: <20140827075936.GA5936@verge.net.au> (raw)
In-Reply-To: <20140826143034.GD9081@redhat.com>

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.

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  reply	other threads:[~2014-08-27  8:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-18 15:22 [PATCH V2] kexec: Provide an option to use new kexec system call Vivek Goyal
2014-08-19  9:15 ` Baoquan He
2014-08-26 14:30 ` Vivek Goyal
2014-08-27  7:59   ` Simon Horman [this message]
2014-08-27 13:04     ` Vivek Goyal
2014-08-27 14:04       ` Simon Horman
2014-08-27 14:15         ` Vivek Goyal

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