Re: [Xen-devel] [PATCH v8 0/13] remove maintenance interrupts

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Wed, 2014-10-15 at 12:12 +0800, harry S wrote:
> 
> 
> I've downloaded the no_maintenance_interrupts-v4 version of 

This series was merged into the mainline xen quite a while ago now.
> 
> 
> The writer say that this patch removes any needs for maintenance
> interrupts for both hardware and software interrupts in Xen.
> 
> 
> I want to know if the no needs for maintenance for software interrupts
> means that sets HCR.TGE to 0 or Xen can handle the software interrupt
> by itself.

Maintenance/interrupt handling has nothing at all to do with HCR.TGE.

Xen does not set HCR.TGE, doing so would be prohibitively expensive
since it traps all sorts of things which would then need
emulating/handling.

Ian.




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