linux-kernel - Re: [PATCH 08/11] kexec-bzImage: Support for loading bzImage using 64bit entry

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Date:	Tue, 25 Feb 2014 13:43:42 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	ebiederm@...ssion.com, mjg59@...f.ucam.org, greg@...ah.com,
	jkosina@...e.cz
Subject: Re: [PATCH 08/11] kexec-bzImage: Support for loading bzImage using
 64bit entry

On Tue, Feb 25, 2014 at 10:38:24AM -0800, H. Peter Anvin wrote:
> On 01/27/2014 10:57 AM, Vivek Goyal wrote:
> > This is loader specific code which can load bzImage and set it up for
> > 64bit entry. This does not take care of 32bit entry or real mode entry
> > yet.
> 
> Is there any use in that?  Real mode entry especially is more than a bit
> scary when coming from another kernel already...

I think 64bit entry should be good for x86_64. When we start supporting
this new system call on x86(32bit), then we can implement 32bit entry 
support (which should not be hard).

I have no plans to implement 16bit entry support. I just wanted to mention
explicitly what is currently supported.

Thanks
Vivek
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