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Date: Mon, 30 May 2022 12:50:09 +0200 From: Claudio Imbrenda <imbrenda@...ux.ibm.com> To: Nico Boehr <nrb@...ux.ibm.com> Cc: kvm@...r.kernel.org, borntraeger@...ibm.com, frankja@...ux.ibm.com, thuth@...hat.com, pasic@...ux.ibm.com, david@...hat.com, linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org, scgl@...ux.ibm.com, mimu@...ux.ibm.com Subject: Re: [PATCH v10 04/19] KVM: s390: pv: refactor s390_reset_acc On Mon, 30 May 2022 09:40:43 +0200 Nico Boehr <nrb@...ux.ibm.com> wrote: > On Mon, 2022-05-16 at 18:11 +0200, Claudio Imbrenda wrote: > [...] > > > [...] > > > > diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c > > > > index e8904cb9dc38..a3a1f90f6ec1 100644 > > > > --- a/arch/s390/mm/gmap.c > > > > +++ b/arch/s390/mm/gmap.c > > > > @@ -2676,44 +2676,81 @@ void s390_reset_cmma(struct mm_struct > > > > *mm) > > > > } > > > > EXPORT_SYMBOL_GPL(s390_reset_cmma); > > > > > > > > -/* > > > > - * make inaccessible pages accessible again > > > > - */ > > > > -static int __s390_reset_acc(pte_t *ptep, unsigned long addr, > > > > - unsigned long next, struct mm_walk > > > > *walk) > > > > +#define DESTROY_LOOP_THRESHOLD 32 > > > > > > maybe GATHER_NUM_PAGE_REFS_TO_TAKE? > > > > what about GATHER_GET_PAGES ? > > Yes, that's good as well. will be fixed
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