linux-kernel - Re: [Xen-devel] Re: [PATCH 2/3] xen/granttable: Grant tables V2 implementation

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Message-ID: <4EC72454.8000502@oracle.com>
Date:	Sat, 19 Nov 2011 11:36:52 +0800
From:	annie li <annie.li@...cle.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	Ian Campbell <Ian.Campbell@...rix.com>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"kurt.hackel@...cle.com" <kurt.hackel@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Paul Durrant <Paul.Durrant@...rix.com>
Subject: Re: [Xen-devel] Re: [PATCH 2/3] xen/granttable: Grant tables V2 implementation



On 2011-11-19 2:05, Konrad Rzeszutek Wilk wrote:
>> So we have two candidates:
>> xen_raw_printk + panic
>> panic + earlyprintk=xen
>>
>> If panic does work with earlyprintk, then the latter one is better.
>> Otherwise, there will be duplicated string printed out with
>> 'earlyprintk=xen'.
>>     
>
> The idea is just to have one function. Whichever prints the
> string and panics the machine. If 'panic' does this properly
> (and properly meaning it actually prints data when using
> the earlyprintk=xen as well as console=hvc0) printout system
> the we cuold just use 'panic' and not worry about it.
>
>   
Ok.
> But if it does not, then we (and by we I mean you) should 
> provide a variant of panic() that prints the data properly using the 
> earlprintk mechanism. Preferrabily to make it generic.
>   
So this work depends on whether panic works well with earlyprink=xen, I 
will do some test on panic first.

Thanks
Annie
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