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Re: [Xen-ia64-devel] [PATCH]: vcpu_match_tr_entry & vcpu_ptc_ga

from [Isaku Yamahata] [Permanent Link][Original]
To: Tristan Gingold <Tristan.Gingold@xxxxxxxx>
Subject: Re: [Xen-ia64-devel] [PATCH]: vcpu_match_tr_entry & vcpu_ptc_ga
From: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Date: Fri, 31 Mar 2006 22:08:05 +0900
Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
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On Fri, Mar 31, 2006 at 01:50:47PM +0100, Tristan Gingold wrote:

> > Just a thought.
> > According to SDM only single ptc.ga must be issued at a time
> > otherwise the result is undefined. Is it exploited?
> Yes, there is a spinlock around ptc.ga.
> I don't see your conclusion: how to exploit that ?

Sorry for my bad english.
Can it be exploited somehow for a better way other than locking?

-- 
yamahata

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