From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yoann Padioleau <pad@fb.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Date: Tue, 21 Jan 2014 01:20:15 +0000
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Subject: [9fans] about KTZERO mismatch in mkfile and mem.h
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Hi,

in 9/pc/mem.h it says:
/*
 *  Address spaces
 */
#define	KZERO		0xF0000000		/* base of kernel address space */
#define	KTZERO		(KZERO+0x100000)	/* first address in kernel text - 9load si=
ts below */


and in 9/pc/mkfile:
# must match mem.h
APBOOTSTRAP=3D0xF0003000
KTZERO=3D0xF0100020


so why the difference? what is this additional 20 for KTZERO?