Dear all:
Is there any change in the way to use shared memory in Beta11(with 2.2.10
kernel)?
I have two systems with the same configuration(AMD450 and 128M main
memory), but one has RTLinux1.1+Kernel2.0.36 installed while the other has
Beta11+Kernel2.2.10. I setup
4092K shared memory pool for use(append="mem=126980k". Shared Memory pool
base address is 0x7C01000). The following piece of code works well in
RTLinux1.1, but it cause segmentation fault in Beta11+Kernel2.2.10.
#define __KERNEL__
#define MODULE
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
int init_module(void)
{
int *data1;
data1 = (int *)0x7C01000;
*data1 = 3;
return 0;
}
void cleanup_module(void)
{
printk("Game Over\n");
}
In Beta11+Kernel2.2.10, error message will be printed to the console:
<1>Unable to handle kernel paging request at virtual address 07c01000
<1>current->tss.cr3 = 051b9000, %cr3 = 051b9000
<1>*pde = 00000000
<4>Oops: 0002
<4>CPU: 0
Any suggestions will be greatly appreciated.
Best Wishes
Daniel
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