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Re: [PATCH qemu] s390x/css: fix PMCW invalid mask

From: Halil Pasic
Subject: Re: [PATCH qemu] s390x/css: fix PMCW invalid mask
Date: Mon, 20 Dec 2021 13:11:54 +0100

On Mon, 20 Dec 2021 11:44:44 +0100
Pierre Morel <pmorel@linux.ibm.com> wrote:

> > 
> > The PoP says that the machine shall ignore other fields
> > of the PMCW when an MSCH is performed. I.e. we should not update
> > "our" pmcw.flags bit 5 from 0 to 1 even if 1 was supplied, and
> > thus STSCH should keep storing the bit 5 as 0 even if there was
> > a MSCH with bit 5 set.  
> So I do understand that there is no problem, we do not keep track
> of this bit in our pmcw.flags and stsch keep storing this bit as 0. right?

Right! False alarm by me -- sorry.


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