Re: [PATCH 05/12] s390/css: expose the AIV facility

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On Thu, 18 Jan 2018 13:02:45 +0100
Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx> wrote:

> On 17.01.18 16:19, David Hildenbrand wrote:
> > On 16.01.2018 21:02, Christian Borntraeger wrote:  
> >> From: Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx>
> >>
> >> The patch exposes the Adapter Interruption Virtualization facility (AIV)
> >> of the general channel subsystem characteristics.
> >>
> >> Signed-off-by: Michael Mueller <mimu@xxxxxxxxxxxxxxxxxx>
> >> Reviewed-by: Halil Pasic <pasic@xxxxxxxxxxxxxxxxxx>
> >> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> >> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> >> ---
> >>   arch/s390/include/asm/css_chars.h | 4 +++-
> >>   1 file changed, 3 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/arch/s390/include/asm/css_chars.h b/arch/s390/include/asm/css_chars.h
> >> index a478eb61aaf7..fb56fa3283a2 100644
> >> --- a/arch/s390/include/asm/css_chars.h
> >> +++ b/arch/s390/include/asm/css_chars.h
> >> @@ -20,7 +20,9 @@ struct css_general_char {
> >>   	u32 aif_tdd : 1; /* bit 56 */
> >>   	u32 : 1;
> >>   	u32 qebsm : 1;	 /* bit 58 */
> >> -	u32 : 8;
> >> +	u32 : 2;
> >> +	u32 aiv : 1;     /* bit 61 */
> >> +	u32 : 5;
> >>   	u32 aif_osa : 1; /* bit 67 */
> >>   	u32 : 12;
> >>   	u32 eadm_rf : 1; /* bit 80 */
> >>  
> > "Expose" sounds like actually forwarding something / enabling a bit.  
> Expose here basically means to make sth. visible what was already available.
> > Wonder if this can be squashed with another patch?
> >
> > Or rename to something like "define" ...  
> I don't plan to change anything.

I'd prefer to simply squash this with the next patch, where the bit is
actually checked.



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