From mboxrd@z Thu Jan 1 00:00:00 1970 From: "dong in kang" To: Subject: Memory management problem with RAMDISK, any help? Date: Tue, 18 May 2004 11:51:24 -0400 Message-ID: <000e01c43cef$f9180dd0$45a97241@Yongkoo> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" In-Reply-To: <40AA2542.5060306@egholm-nielsen.dk> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hello, My Linux (v.2.4.22) running on a PowerPC 750 system does not seem to know the memory bound when ramdisk is installed. The system has 128 M memory and 28 Meg of the memory is used as ramdisk. I setup the memory size as 128M bytes at the kernel parameter and ppc_md.find_end_of_memory() routine returns constant 128M. The kernel dies with " Oops: kernel access of bad area, sig: 11". The area it accessed is the start of the last 28 Megabytes of the 128 M memory. It happens when the kernel tries to allocate memory for socket communication. How can I know the kernel knows the end of memory correctly? Could it be other problem? Thanks, Dong-In ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/