From: Jacob Gorm Hansen <jacobg@diku.dk>
To: "Aaron J. Marks" <ajmarks@seas.upenn.edu>
Cc: xen-devel@lists.xensource.com
Subject: Re: L1 page tables and get_pfn_type_batch()
Date: Tue, 16 Aug 2005 14:01:53 +0200 [thread overview]
Message-ID: <4301D5B1.1070504@diku.dk> (raw)
In-Reply-To: <Pine.GSO.4.58.0508160757330.28454@red.seas.upenn.edu>
Aaron J. Marks wrote:
> hi all,
>
> i have two questions regarding the page tables of domains.
>
> 1. get_pfn_type_batch() seems to have a single-page limit. ie, trying to
> get pfn types for an array larger than a page fails. why the restriction?
>
> 2. L1 page tables seem to contain mfns of not only L2 pages, but "normal"
> pages as well. can anyone explain this?
I am just guessing, but perhaps you are confusing Xen's (weird) notion
of what is L1 and what is L2. In Xen, the top-level page directory
(assuming two-level page tables) is considered L2, and the leaf page
tables are considered L1.
Jacob
prev parent reply other threads:[~2005-08-16 12:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-16 11:58 L1 page tables and get_pfn_type_batch() Aaron J. Marks
2005-08-16 12:01 ` Jacob Gorm Hansen [this message]
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=4301D5B1.1070504@diku.dk \
--to=jacobg@diku.dk \
--cc=ajmarks@seas.upenn.edu \
--cc=xen-devel@lists.xensource.com \
/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.