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From: Mike Rapoport <rppt@kernel.org>
To: Baoquan He <bhe@redhat.com>
Cc: David Hildenbrand <david@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
	Ingo Molnar <mingo@redhat.com>, Mel Gorman <mgorman@suse.de>,
	Michal Hocko <mhocko@kernel.org>,
	Mike Rapoport <rppt@linux.ibm.com>, Qian Cai <cai@lca.pw>,
	Thomas Gleixner <tglx@linutronix.de>,
	Vlastimil Babka <vbabka@suse.cz>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH v3 2/2] mm: fix initialization of struct page for holes in memory layout
Date: Mon, 1 Feb 2021 16:12:22 +0200
Message-ID: <20210201141222.GH242749@kernel.org> (raw)
In-Reply-To: <20210201093958.GD28734@MiWiFi-R3L-srv>

On Mon, Feb 01, 2021 at 05:39:58PM +0800, Baoquan He wrote:
> On 02/01/21 at 10:14am, David Hildenbrand wrote:
> > On 11.01.21 20:40, Mike Rapoport wrote:
> > > +
> > > +static void __init init_unavailable_mem(void)
> > > +{
> > > +	int zone;
> > > +
> > > +	for (zone = 0; zone < ZONE_MOVABLE; zone++)
> > > +		init_zone_unavailable_mem(zone);
> > 
> > Why < ZONE_MOVABLE?
> > 
> > I remember we can have memory holes inside the movable zone when messing
> > with "movablecore" cmdline parameter.
> 
> Maybe because we haven't initialized MOABLE zone info at this time.

We already have zone_movable_pfn initialized at this point. 
So if there is a possibility for holes in the movable zone, we should take
care of it.

-- 
Sincerely yours,
Mike.

  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-11 19:40 [PATCH v3 0/2] " Mike Rapoport
2021-01-11 19:40 ` [PATCH v3 1/2] x86/setup: don't remove E820_TYPE_RAM for pfn 0 Mike Rapoport
2021-01-13  8:56   ` Oscar Salvador
2021-01-13 11:23     ` Mike Rapoport
2021-01-13 12:56   ` David Hildenbrand
2021-01-13 15:35     ` Mike Rapoport
2021-01-21 13:25   ` Borislav Petkov
2021-01-11 19:40 ` [PATCH v3 2/2] mm: fix initialization of struct page for holes in memory layout Mike Rapoport
2021-02-01  9:14   ` David Hildenbrand
2021-02-01  9:39     ` Baoquan He
2021-02-01 14:12       ` Mike Rapoport [this message]
2021-01-12  0:58 ` [PATCH v3 0/2] " Andrew Morton
2021-01-12  5:25   ` Mike Rapoport

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