From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Wed, 5 Jul 2017 09:41:43 +0100 Subject: [PATCH 0/8] io-pgtable lock removal In-Reply-To: <2d5f5ef3-32b1-76c6-6869-ff980557f8e8@broadcom.com> References: <458ad41d-6679-eeca-3c0f-13ccb6c933b6@codeaurora.org> <20170628114609.GD11053@arm.com> <87d53115-3d80-5a3d-6632-c31986cb7018@broadcom.com> <20170704173155.GN22175@arm.com> <6814b246-22f0-bfaa-5002-a269b2735116@broadcom.com> <2d5f5ef3-32b1-76c6-6869-ff980557f8e8@broadcom.com> Message-ID: <20170705084143.GA9378@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Jul 04, 2017 at 06:45:17PM -0700, Ray Jui wrote: > Hi Will/Robin, > > Has anything functionally changed between PATCH v2 and v1? I'm seeing a > very different L2 throughput with v2 (in general a lot worse with v2 vs. > v1); however, I'm currently unable to reproduce the TLB sync timed out > issue with v2 (without the patch from Will's email). > > It could also be something else that has changed in my setup, but so far > I have not yet been able to spot anything wrong in the setup. There were fixes, and that initially involved a DSB that was found to be expensive. The patches queued in -next should have that addressed, so please use those (or my for-joerg/arm-smmu/updates branch). Will