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

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Message-ID: <CA+G9fYs7s34mmtard-ETjH2r94psgQFLDJWayznvN6UTvMYh5g@mail.gmail.com>
Date:   Sun, 19 Jul 2020 17:52:44 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     "Paul E. McKenney" <paulmck@...nel.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 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.

>
>                                                         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