From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Chapman Date: Wed, 05 Nov 2008 23:07:37 +0000 Subject: Re: [REGRESSION] Minimize per_cpu reservations patch causes NULL Message-Id: <1225926457.1605.29.camel@oberon> List-Id: References: <1225830514.13942.8.camel@localhost.localdomain> In-Reply-To: <1225830514.13942.8.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tue, 2008-11-04 at 15:28 -0500, Doug Chapman wrote: > So, it seems the options to fix this that I can think of are: > > 1) try to get the info regarding offline CPUs earlier either by calling > acpi_boot_init() earlier (probably not possible prior to calling find_memory()) > or walk a subset of the ACPI tables to get the number of offline CPUs sooner > (which sounds ugly). This ended up being a clean way to resolve this. I just posted the patch, see the "[PATCH][IA64] fix boot panic caused by offline CPUs" posting. - Doug