linux-kernel - Re: [PATCH 2/2] kvm: mmu: page

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Date:   Sun, 19 Jul 2020 09:08:24 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     madhuparnabhowmik10@...il.com,
        Dexuan-Linux Cui <dexuan.linux@...il.com>,
        Josh Triplett <josh@...htriplett.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Paolo Bonzini <pbonzini@...hat.com>, rcu@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>,
        X86 ML <x86@...nel.org>, kvm list <kvm@...r.kernel.org>,
        frextrite@...il.com, lkft-triage@...ts.linaro.org,
        Dexuan Cui <decui@...rosoft.com>, juhlee@...rosoft.com,
        Daniel Díaz <daniel.diaz@...aro.org>
Subject: Re: [PATCH 2/2] kvm: mmu: page_track: Fix RCU list API usage

On Sun, Jul 19, 2020 at 05:52:44PM +0530, Naresh Kamboju wrote:
> On Sat, 18 Jul 2020 at 05:43, Paul E. McKenney <paulmck@...nel.org> wrote:
> >
> > On Sat, Jul 18, 2020 at 12:35:12AM +0530, Naresh Kamboju wrote:
> > > Hi Paul,
> > >
> > > > I am not seeing this here.
> > >
> > > Do you notice any warnings while building linux next master
> > > for x86_64 architecture ?
> >
> > Idiot here was failing to enable building of KVM.  With that, I do see
> > the error.  The patch resolves it for me.  Does it help for you?
> 
> yes.
> The below patch applied on top of linux -next 20200717 tag
> and build pass.

Thank you!  May I add your Tested-by?

                                                        Thanx, Paul

> > ------------------------------------------------------------------------
> >
> > diff --git a/include/linux/rculist.h b/include/linux/rculist.h
> > index de9385b..f8633d3 100644
> > --- a/include/linux/rculist.h
> > +++ b/include/linux/rculist.h
> > @@ -73,7 +73,7 @@ static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
> >  #define __list_check_rcu(dummy, cond, extra...)                                \
> >         ({ check_arg_count_one(extra); })
> >
> > -#define __list_check_srcu(cond) true
> > +#define __list_check_srcu(cond) ({ })
> >  #endif
> >
> >  /*
> 
> - Naresh