From: jlight@srcit.stevens.edu (James Light)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Regarding enable paging code and swapper_pg_dir.
Date: Sat, 2 Apr 2011 12:31:54 -0400 [thread overview]
Message-ID: <20110402163154.GC7686@stevens.edu> (raw)
In-Reply-To: <20110402162534.GB7686@stevens.edu>
If you look at the 2.6.38 code for head.S, you may find the newer way it is
written to be a bit easier to read.
------------------------------------------------------------------------------
25 /* Physical address */
26 #define pa(X) ((X) - __PAGE_OFFSET)
...
345 /*
346 * Enable paging
347 */
348 movl $pa(initial_page_table), %eax
349 movl %eax,%cr3 /* set the page table pointer.. */
350 movl %cr0,%eax
351 orl $X86_CR0_PG,%eax
352 movl %eax,%cr0 /* ..and set paging (PG) bit */
353 ljmp $__BOOT_CS,$1f /* Clear prefetch and normalize %eip */
------------------------------------------------------------------------------
-James
next prev parent reply other threads:[~2011-04-02 16:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-01 20:07 Regarding enable paging code and swapper_pg_dir mindentropy
[not found] ` <20110401211921.GH23673@stevens.edu>
[not found] ` <201104021333.21661.mindentropy@gmail.com>
2011-04-02 16:25 ` James Light
2011-04-02 16:31 ` James Light [this message]
2011-04-02 17:48 ` mindentropy
2011-04-02 20:52 ` James Light
2011-04-03 20:54 ` mindentropy
2011-04-04 21:07 ` mindentropy
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=20110402163154.GC7686@stevens.edu \
--to=jlight@srcit.stevens.edu \
--cc=kernelnewbies@lists.kernelnewbies.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).