From: Rich.Liu@ite.com.tw
To: linux-kernel@vger.kernel.org
Subject: Memory Access Problem
Date: Tue, 15 May 2001 14:36:51 +0800 [thread overview]
Message-ID: <412C066DD818D3118D4300805FD4667902090B77@ITEMAIL> (raw)
I have a problem in kernel 2.4.4
I use readw to access memory below 1MB , report "Segmentation fault"
and stall in memory
simple code below (this will get paraller port)
==
int init_module(void){
unsigned int *BIOS_Data=(unsigned int *)0x400;
u32 test;
test = readw(BIOS_Data);
printk(KERN_CRIT "0x400:%x\n",test);
}
==
but those can work in kernel 2.2.19 , no problem .
can anyone help me ?
--
Richliu
next reply other threads:[~2001-05-15 6:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-15 6:36 Rich.Liu [this message]
2001-05-15 9:40 ` Alan Cox
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