From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruno Vidal Date: Tue, 13 May 2003 07:02:48 +0000 Subject: [Linux-ia64] Dump driver module Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Hi all. I've already wrote a dump modules driver for linux-parisc. This module goal is to create a memory image on a swap area, and at reboot time to save it to disk with all kernel modules, in order to analyze it after by "support" people with tools like gdb/p4. The problem while dumping is that the dump modules cannot trust anymore the system, so dumping means: no interruption, no disk driver, no buffer, nothing. The solution is to use low level call. For parisc I use the IODC calls, for ia64 I think I'll use the EFI calls. My questions: -do you think it is a "good" and realistic solution. -because I think "yes", does exist somewhere an example of reading/writing with EFI call on disk using BLOCK IO. I've already looked in elilo, but it seems that it use FS access. Thanks. -- Vidal Bruno, (770-4271) SSD-HA Team, HP-UX & LINUX Support bruno_vidal@admin.france.hp.com