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
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