linux-kernel - Re: [PATCH v3 resend 11/15] powerpc: convert to setup_initial_init

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Date:   Tue, 8 Jun 2021 20:41:47 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        linux-kernel@...r.kernel.org, Linux-MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v3 resend 11/15] powerpc: convert to setup_initial_init_mm()

On Tue, Jun 8, 2021 at 8:24 PM Christophe Leroy
<christophe.leroy@...roup.eu> wrote:
>
>
>
> Le 08/06/2021 à 16:36, Souptick Joarder a écrit :
> > On Tue, Jun 8, 2021 at 1:56 PM Kefeng Wang <wangkefeng.wang@...wei.com> wrote:
> >>
> >> Use setup_initial_init_mm() helper to simplify code.
> >>
> >> Note klimit is (unsigned long) _end, with new helper,
> >> will use _end directly.
> >
> > With this change klimit left with no user in this file and can be
> > moved to some appropriate header.
> > But in a separate series.
>
> I have a patch to remove klimit, see
> https://patchwork.ozlabs.org/project/linuxppc-dev/patch/9fa9ba6807c17f93f35a582c199c646c4a8bfd9c.1622800638.git.christophe.leroy@csgroup.eu/

Got it. Thanks :)

>
> Christophe
>
>
> >
> >>
> >> Cc: Michael Ellerman <mpe@...erman.id.au>
> >> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> >> Cc: linuxppc-dev@...ts.ozlabs.org
> >> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> >> ---
> >>   arch/powerpc/kernel/setup-common.c | 5 +----
> >>   1 file changed, 1 insertion(+), 4 deletions(-)
> >>
> >> diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
> >> index 74a98fff2c2f..96697c6e1e16 100644
> >> --- a/arch/powerpc/kernel/setup-common.c
> >> +++ b/arch/powerpc/kernel/setup-common.c
> >> @@ -927,10 +927,7 @@ void __init setup_arch(char **cmdline_p)
> >>
> >>          klp_init_thread_info(&init_task);
> >>
> >> -       init_mm.start_code = (unsigned long)_stext;
> >> -       init_mm.end_code = (unsigned long) _etext;
> >> -       init_mm.end_data = (unsigned long) _edata;
> >> -       init_mm.brk = klimit;
> >> +       setup_initial_init_mm(_stext, _etext, _edata, _end);
> >>
> >>          mm_iommu_init(&init_mm);
> >>          irqstack_early_init();
> >> --
> >> 2.26.2
> >>
> >>