BOUNCE rtl@rtlinux.org: Approval required: Non-member submissionfrom ["Marc LE DOUARAIN" <mledouarain@garbarini.com>] (fwd)

[Der Herr Hofrat <der.herr@hofr.at>]

>From owner-rtl Thu May 17 09:48:19 2001
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Date: Thu, 17 May 2001 18:02:09 +0200
From: "Marc LE DOUARAIN" <mledouarain@garbarini.com>
To: <rtl@fsmlabs.com>
Cc: "Patrick VIGOT" <pvigot@garbarini.com>
Subject: Shared memory with Lilo and __va()
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Hello,

I've tried sharing memory on RTLinux as explained in the Shared Memory HOWTO :

I've 64Megs RAM on the computer...
With Lilo, I set to use only 31m with append="mem=31m"

I do the following define :
#define ADDRESS (31*0x100000)

In the real-time module , I have the following :
my_structure * Params = ADDRESS;

And when I insmod the real-time module, I get the following error :
"Unable to handle kernel paging request"

Any idea?


I've tried the same code on another computer (128Megs RAM) using also 31m with Lilo, and all is working perfectly...

I've tried on the first computer with incorrect #define ADDRESS (5*0x100000), strange, I've no more the error, but datas seems not to be shared...

Many Thanks.