From: Konrad Rzeszutek Wilk <konrad.wilk@Oracle.Com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"x86@kernel.org" <x86@kernel.org>,
Jan Beulich <JBeulich@novell.com>
Subject: Re: [PATCH] x86/mm/init: respect memblock reserved regions when destroying mappings
Date: Tue, 8 Feb 2011 09:55:51 -0500 [thread overview]
Message-ID: <20110208145551.GA4606@dumpdata.com> (raw)
In-Reply-To: <AANLkTi=koyyz8h1A3qWbp2F+N3kA46rJfHPSPN+Ms8hm@mail.gmail.com>
> >> could be used to skip clear highmap for xen path?
> >
> > Seems pretty ad-hoc.
> >
>
> then what is size for mfn-list after _end...
8 bytes * nr_pages. For 4GB, 2048 pages. For 32GB, 8192 pages. For 128GB,
32768 pages, and so on.
>
> could be copied or move to BRK.
The _brk size is determined during build-time. We don't know what the
memory size will be during bootup time and would have to select the
highest values (128MB) which is quite a large amount to be reserved
in _brk area.
next prev parent reply other threads:[~2011-02-08 14:57 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 15:18 [PATCH] x86/mm/init: respect memblock reserved regions when destroying mappings Stefano Stabellini
2011-02-02 20:15 ` Jeremy Fitzhardinge
2011-02-03 5:05 ` H. Peter Anvin
2011-02-03 11:25 ` Stefano Stabellini
2011-02-03 17:02 ` H. Peter Anvin
2011-02-04 11:35 ` Stefano Stabellini
2011-02-05 1:18 ` Jeremy Fitzhardinge
2011-02-06 7:02 ` Yinghai Lu
2011-02-06 7:30 ` H. Peter Anvin
2011-02-06 17:49 ` Yinghai Lu
2011-02-06 19:24 ` Yinghai Lu
2011-02-07 16:50 ` Stefano Stabellini
2011-02-07 18:04 ` Yinghai Lu
2011-02-07 18:58 ` Stefano Stabellini
2011-02-07 19:00 ` Yinghai Lu
2011-02-07 19:18 ` Yinghai Lu
2011-02-07 21:56 ` Jeremy Fitzhardinge
2011-02-08 3:12 ` Yinghai Lu
2011-02-08 4:56 ` Jeremy Fitzhardinge
2011-02-08 5:09 ` Yinghai Lu
2011-02-08 14:55 ` Konrad Rzeszutek Wilk [this message]
2011-02-08 19:24 ` Jeremy Fitzhardinge
2011-02-08 20:26 ` Stefano Stabellini
2011-02-08 19:34 ` H. Peter Anvin
2011-02-10 23:48 ` Jeremy Fitzhardinge
2011-02-10 23:57 ` Yinghai Lu
2011-02-11 0:35 ` H. Peter Anvin
2011-02-11 0:54 ` Yinghai Lu
2011-02-14 16:26 ` Konrad Rzeszutek Wilk
2011-02-14 17:55 ` Yinghai Lu
2011-02-14 17:58 ` Stefano Stabellini
2011-02-14 18:09 ` Yinghai Lu
2011-02-14 20:02 ` H. Peter Anvin
2011-02-16 17:36 ` Stefano Stabellini
2011-02-07 19:00 ` Stefano Stabellini
2011-02-08 5:16 ` Yinghai Lu
2011-02-08 14:03 ` Stefano Stabellini
2011-02-08 16:04 ` Yinghai Lu
2011-02-07 16:02 ` Stefano Stabellini
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