From: Arun Sharma <arun.sharma@intel.com>
To: linux-ia64@vger.kernel.org
Subject: Re: Odd IA32 mmap calls - Is this fixed
Date: Wed, 12 Nov 2003 19:53:01 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106866691024263@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106862063402317@msgid-missing>
On 11/12/2003 11:45 AM, n0ano@n0ano.com wrote:
> Arun-
>
> I'm pretty sure your patch with cause things to break. You
> will wind up freeing memory that the IA32 process is still
> using, causing `bad` things to happen.
>
Yes, of course. May be the disclaimer wasn't prominent enough :)
> Actually, there is a solution but it's kind of icky. The
> idea is you have to maintain knowledge of which 4K area of
> the IA32 prcesses's IA64 page is truly in use. When all
> 4K areas of the IA64 page are freed you can free the IA64 page.
>
> This not as bad as it could be because you only have to keep
> track of the first & last IA64 pages that are used for each
> IA32 mmap request so the overhead isn't that outrageous. I
> submitted a patch to do this ages ago but I guess it got lost
> somehow.
Is this the patch you're talking about ?
http://www.gelato.unsw.edu.au/linux-ia64/0203/3099.html
-Arun
next prev parent reply other threads:[~2003-11-12 19:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-12 7:03 Odd IA32 mmap calls - Is this fixed Shiju A Mathew
2003-11-12 19:17 ` Arun Sharma
2003-11-12 19:45 ` n0ano
2003-11-12 19:53 ` Arun Sharma [this message]
2003-11-12 20:01 ` n0ano
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=marc-linux-ia64-106866691024263@msgid-missing \
--to=arun.sharma@intel.com \
--cc=linux-ia64@vger.kernel.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.