From: ZhangWeiXue <ZhangWeiXue@asdc.com.cn>
To: Linux MM <linux-mm@kvack.org>
Subject: I do not know what the code means.
Date: Mon, 14 Jun 1999 15:48:11 +0000 [thread overview]
Message-ID: <3765243A.8926786B@asdc.com.cn> (raw)
Dear all,
The following code is cut from the head.s, I do not know exactly what it
do?
If you can explain the meaning of " .long 0x00102007 " and " .fill
__USER_PGD_PTRS-1,4,0" for me,
I will appreciate deeply.
Best regards.
/*
* This is initialized to create a identity-mapping at 0-4M (for bootup
* purposes) and another mapping of the 0-4M area at virtual address
* PAGE_OFFSET.
*/
.org 0x1000
ENTRY(swapper_pg_dir)
.long 0x00102007
.fill __USER_PGD_PTRS-1,4,0
/* default: 767 entries */
.long 0x00102007
/* default: 255 entries */
.fill __KERNEL_PGD_PTRS-1,4,0
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next reply other threads:[~1999-06-14 7:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-06-14 15:48 ZhangWeiXue [this message]
1999-06-14 10:31 ` Marcus Sundberg
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