All of lore.kernel.org
 help / color / mirror / Atom feed
From: Matthew Wilcox <willy@debian.org>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] mmap and GCC precompiled headers
Date: Thu, 15 Jul 2004 22:50:15 +0100	[thread overview]
Message-ID: <20040715215015.GO32326@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <200407152134.i6FLY3GU021049@hiauly1.hia.nrc.ca>

On Thu, Jul 15, 2004 at 05:34:02PM -0400, John David Anglin wrote:
> > That's an unwarranted assumption.  If they want that, they need to
> > specify MAP_FIXED.
> 
> The problem with MAP_FIXED is that it replaces any previous mappings.
> I believe that the code in question doesn't want to do that.  It
> simply wants to fallback to not using PCH if the suggested value
> for START doesn't work out.

Oh, that's easy enough.  mmap() returns the address it got mapped at,
so just compare it to the address you asked for and decline to use PCH
in that case.

> Obviously, this isn't a problem on lots of other ports or everybody
> would be screaming.

Sparc and MIPS should have difficulties too...

-- 
"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain
_______________________________________________
parisc-linux mailing list
parisc-linux@lists.parisc-linux.org
http://lists.parisc-linux.org/mailman/listinfo/parisc-linux

  parent reply	other threads:[~2004-07-15 21:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-15 20:25 [parisc-linux] mmap and GCC precompiled headers John David Anglin
2004-07-15 20:39 ` Matthew Wilcox
2004-07-15 21:34   ` John David Anglin
2004-07-15 21:43     ` Randolph Chung
2004-07-15 21:50     ` Matthew Wilcox [this message]
2004-07-15 22:26       ` John David Anglin
2004-07-16  6:22         ` Randolph Chung
2004-07-16 16:44           ` John David Anglin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20040715215015.GO32326@parcelfarce.linux.theplanet.co.uk \
    --to=willy@debian.org \
    --cc=dave@hiauly1.hia.nrc.ca \
    --cc=parisc-linux@lists.parisc-linux.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.