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Re: [Qemu-devel] [PATCH v1 for-2.12 04/15] s390x/ioinst: pass the retadd


From: Cornelia Huck
Subject: Re: [Qemu-devel] [PATCH v1 for-2.12 04/15] s390x/ioinst: pass the retaddr to all IO instructions
Date: Wed, 29 Nov 2017 16:57:52 +0100

On Wed, 29 Nov 2017 16:45:21 +0100
David Hildenbrand <address@hidden> wrote:

> On 29.11.2017 16:39, Cornelia Huck wrote:
> > On Wed, 29 Nov 2017 16:38:03 +0100
> > David Hildenbrand <address@hidden> wrote:
> >   
> >> On 29.11.2017 16:35, Cornelia Huck wrote:  
> >>> On Wed, 29 Nov 2017 16:14:40 +0100
> >>> David Hildenbrand <address@hidden> wrote:
> >>>     
> >>>> On 29.11.2017 16:13, Cornelia Huck wrote:    
> >>>>> On Tue, 28 Nov 2017 21:33:14 +0100
> >>>>> David Hildenbrand <address@hidden> wrote:
> >>>>>       
> >>>>>> TCG needs the retaddr when injecting an interrupt. Let's just pass it
> >>>>>> along and use 0 for KVM. The value will be completely ignored for KVM. 
> >>>>>>      
> >>>>>
> >>>>> Can we get a #define for that? Just to make it clear at a glance that
> >>>>> we're passing an ignored value and not some magic thing.      
> >>>>
> >>>> If you can come up with a good name, I can't :)    
> >>>
> >>> KVM_FAKE_RA
> >>> KVM_RA_UNUSED
> >>> KVM_RA_IGNORED
> >>>
> >>> ?
> >>>     
> >>
> >> KVM_RA ? (to keep lines short?)
> >>  
> > 
> > That sounds too much like a magic value IMO (and not something that is
> > ignored).
> >   
> 
> Passing 0 will actually also ignore it for TCG. So it is actually a
> magic value :) (just that more gets ignore din case of KVM ...)
> 
> RA_NONE ?
> 
> 

RA_IGNORED?



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