All of lore.kernel.org
 help / color / mirror / Atom feed
From: Christian Hildner <christian.hildner@hob.de>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] [PATCH] Performance Patch for TLB misses
Date: Mon, 11 Nov 2002 08:38:54 +0000	[thread overview]
Message-ID: <marc-linux-ia64-105590709805379@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590709805350@msgid-missing>


David Mosberger schrieb:

> >>>>> On Thu, 07 Nov 2002 15:00:27 +0100, Christian Hildner <christian.hildner@hob.de> said:
>
>   Christian> - let the processor also check for privilege level
>   Christian> because it's very very rare
>
> I didn't look at the patch too closely but this change looks wrong.
> It would let user level insert arbitrary identity-mapped TLB
> translations, which is not safe because it can trigger memory
> attribute aliasing.

Yes, user level would be allowed to insert translations. But the page attributes are hardcoded
(PAGE_KERNEL) and this will not allow the user to touch this pages.

Christian



  parent reply	other threads:[~2002-11-11  8:38 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-07 14:00 [Linux-ia64] [PATCH] Performance Patch for TLB misses Christian Hildner
2002-11-07 16:38 ` David Mosberger
2002-11-07 17:14 ` Mario Smarduch
2002-11-11  8:38 ` Christian Hildner [this message]
2002-11-11  8:49 ` Christian Hildner
2002-11-11 12:07 ` John Marvin
2002-11-11 18:48 ` David Mosberger
2002-11-12  8:43 ` Christian Hildner
2002-11-12 17:00 ` David Mosberger
2002-11-12 18:03 ` David Mosberger

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-ia64-105590709805379@msgid-missing \
    --to=christian.hildner@hob.de \
    --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.