From: "H. Peter Anvin" <hpa@zytor.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Arjan van de Ven <arjan@infradead.org>,
Jan Engelhardt <jengelh@computergmbh.de>,
linux-kernel@vger.kernel.org, davej@redhat.com, mingo@elte.hu,
tglx@tglx.de
Subject: Re: [PATCH] x86: introduce /dev/mem restrictions with a config option
Date: Thu, 31 Jan 2008 14:05:09 -0800 [thread overview]
Message-ID: <47A24615.4060603@zytor.com> (raw)
In-Reply-To: <200801311402.46833.jbarnes@virtuousgeek.org>
Jesse Barnes wrote:
>>> This is more for compatibility with legacy X
>> Legacy X, and non-BAR X memory (originally ISA, of course; now
>> probably more often "stolen system memory").
>
> For legacy memory, we actually have /sys/bus/pci/<busno>/legacy_mem
> (though ia64 may be the only supported platform). It's actually
> required on some arches due to the way this space is allocated across
> the system.
Well, it's certainly not under /sys/bus/pci on x86 systems...
-hpa
next prev parent reply other threads:[~2008-01-31 22:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-30 20:48 [PATCH] x86: introduce /dev/mem restrictions with a config option Arjan van de Ven
2008-01-31 16:53 ` Jan Engelhardt
2008-01-31 17:08 ` Arjan van de Ven
2008-01-31 17:42 ` H. Peter Anvin
2008-01-31 22:02 ` Jesse Barnes
2008-01-31 22:05 ` H. Peter Anvin [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-01-31 14:04 devzero
2008-01-31 14:41 ` Arjan van de Ven
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