From mboxrd@z Thu Jan 1 00:00:00 1970 From: pawel.moll@arm.com (Pawel Moll) Date: Wed, 30 Jan 2013 16:05:36 +0000 Subject: Commit 384a290283fde63ba8dc671fca5420111cdac19a seems to break 11MPCore boot In-Reply-To: References: <51093B0B.7010708@arm.com> Message-ID: <1359561936.3094.19.camel@hornet> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, 2013-01-30 at 16:00 +0000, Nicolas Pitre wrote: > > Pawel suggested I try reverting 384a290283fde63ba8dc671fca5420111cdac19a - > > "ARM: gic: use a private mapping for CPU target interfaces" that you've > > authored. With this commit reverted the kernel boots. > > > > I am not quite sure why the commit breaks 11MPCore but Pawel (cc'd) might be > > able to shed light on that. > > That would be appreciated as I don't have any good answer to provide. Uh, I afraid that my light-generating capabilities may be slightly overestimated, as it was just a logical but lucky guess, really. > Typically, this patch highlighted problems with bad holding pen > implementations where secondary CPUs would enter the kernel all at the > same time. In that case the kernel was crashing even before displaying > "CPU2: Booted secondary processor". I'll try to get the board and reproduce the problem, but I can't promise any dates... Pawe?