From: Matthew Wilcox <willy@debian.org>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: Matthew Wilcox <willy@debian.org>,
carlos@baldric.uwo.ca, tausq@debian.org,
parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] kdb getting healthier? (PCI guru needed, that's you willy!)
Date: Fri, 7 Jun 2002 18:06:13 +0100 [thread overview]
Message-ID: <20020607180613.P27186@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <200206071701.g57H1T6M016445@hiauly1.hia.nrc.ca>; from dave@hiauly1.hia.nrc.ca on Fri, Jun 07, 2002 at 01:01:29PM -0400
On Fri, Jun 07, 2002 at 01:01:29PM -0400, John David Anglin wrote:
> Are they always 0 or are there situations where drivers change a space
> register value? If they never change, then the memory limit is still
> 3GB.
Nobody changes sr4-7 (the default space registers). Some drivers play
with sr1. We use sr3 to access the user's process. There's no problem
with accessing 4GB in either the kernel or the user process (though
we limit to 3.75GB currently, i believe, just to prevent unfortunate
accidents).
--
Revolutions do not require corporate support.
prev parent reply other threads:[~2002-06-07 17:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-06 13:21 [parisc-linux] kdb getting healthier? (PCI guru needed, that's you willy!) Carlos O'Donell Jr.
2002-06-06 14:09 ` Matthew Wilcox
2002-06-06 14:43 ` Carlos O'Donell Jr.
2002-06-06 16:19 ` John David Anglin
2002-06-06 18:57 ` Carlos O'Donell Jr.
2002-06-06 19:35 ` John David Anglin
2002-06-07 15:08 ` Carlos O'Donell Jr.
2002-06-07 16:42 ` John David Anglin
2002-06-07 16:48 ` Matthew Wilcox
2002-06-07 17:01 ` John David Anglin
2002-06-07 17:06 ` Matthew Wilcox [this message]
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