From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Hall, Jenna S" Date: Tue, 11 Jun 2002 16:05:32 +0000 Subject: RE: [Linux-ia64] Does MCA handler work correctly? Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Good observation - you are absolutely correct that the current implementation is not SMP-safe. The MCA handler is not functional yet - currently, if you do get an MCA the OS handler will return to SAL with a request to reboot the machine, and no attempt is made to recover. (The logging of hardware-corrected errors is functional, however.) There is an effort in progress to code the OS recovery for selected MCAs. This effort is part of the Atlas project: http://atlas-64.sourceforge.net Thanks, Jenna -----Original Message----- From: j-nomura@ce.jp.nec.com [mailto:j-nomura@ce.jp.nec.com] Sent: Tuesday, June 11, 2002 5:01 AM To: linux-ia64@linuxia64.org Subject: [Linux-ia64] Does MCA handler work correctly? Hello, does MCA handler of 2.4.18 work correctly on multiple processors? While looking into mca.c and mca_asm.S, they have single static stack area for MCA handling, but I could not find synchronization code between processors. It seems that when MCA occurs on multiple processors, they may break stacks each other. Best regards. -- NOMURA, Jun'ichi HPC Operating System Group, 1st Computers Software Division, Computers Software Operations Unit, NEC Solutions. _______________________________________________ Linux-IA64 mailing list Linux-IA64@linuxia64.org http://lists.linuxia64.org/lists/listinfo/linux-ia64