linux-kernel - Re: apparent regressions from TLB range flushing page set

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Date:	Wed, 22 Aug 2012 16:54:29 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	Jan Beulich <jbeulich@...e.com>
CC:	konrad.wilk@...cle.com, linux-kernel@...r.kernel.org, hpa@...or.com
Subject: Re: apparent regressions from TLB range flushing page set

On 08/22/2012 03:39 PM, Jan Beulich wrote:

>>>> Alex Shi <alex.shi@...el.com> 08/22/12 5:24 AM >>>
>> On 08/20/2012 10:12 PM, Jan Beulich wrote:
>> I was thought you have 'Agreed' for xen part code. :)
> 
> I had agreed to it being done the right way, and I had pointed out the
> problem once. I can't say for sure that I looked at the most recent rev
> closely enough to spot the issue still being unfixed.
> 
>>> For one, while TLB_FLUSH_ALL gets passed as 'end' argument to
>>> flush_tlb_others(), the Xen code was made to check its 'start'
>>> parameter.
>>
>> Do you mean need the following change? --untested.
> 
> Yes. I'd question though whether for that special case it shouldn't be
> start _and_ end to get passed the special value.


Actually the special value is already there in old code.
so, what's your meaning of the question?

> 
> Jan
> 


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