From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hedi Berriche Date: Sat, 28 Aug 2010 00:28:55 +0000 Subject: Re: Serious problem with ticket spinlocks on ia64 Message-Id: <20100828002855.GI18967@zorg.emea.sgi.com> List-Id: References: <201008271537.35709.ptesarik@suse.cz> <201008272303.34228.ptesarik@suse.cz> <987664A83D2D224EAE907B061CE93D53015D91D45F@orsmsx505.amr.corp.intel.com> <201008280013.19941.ptesarik@suse.cz> <987664A83D2D224EAE907B061CE93D53015D91D604@orsmsx505.amr.corp.intel.com> <987664A83D2D224EAE907B061CE93D53015D91D645@orsmsx505.amr.corp.intel.com> In-Reply-To: <987664A83D2D224EAE907B061CE93D53015D91D645@orsmsx505.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Luck, Tony" Cc: Petr Tesarik , "linux-ia64@vger.kernel.org" , "linux-kernel@vger.kernel.org" On Sat, Aug 28, 2010 at 00:55 Tony Luck wrote: | > this fails so catastrophically | | Interesting ... getting rid of some of the fancy asm bits | (replacing both the ld4.c.nc and the ld2.bias with simple | "serve = *p" and "tmp = *p") makes this run a lot better. *Hasty* look seems to suggest that keeping the fancy asm bits but compiling with -O2 -frename-registers makes it work equally well. Don't take my word for it though, double check it, it's been a long week and brain is anything but alert at this time of the night. Cheers, Hedi. -- Hedi Berriche Global Product Support http://www.sgi.com/support