From mboxrd@z Thu Jan 1 00:00:00 1970 From: robin.murphy@arm.com (Robin Murphy) Date: Thu, 31 Aug 2017 14:44:24 +0100 Subject: [PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi all, Since Nate reported a reasonable performance boost from the out-of-line MSI polling in v1 [1], I've now implemented the equivalent for cons polling as well - that has been boot-tested on D05 with some trivial I/O and at least doesn't seem to lock up or explode. There's also a little cosmetic tweaking to make the patches a bit cleaner as a series. Robin. [1] https://www.mail-archive.com/iommu at lists.linux-foundation.org/msg19657.html Robin Murphy (5): iommu/arm-smmu-v3: Specialise CMD_SYNC handling iommu/arm-smmu-v3: Forget about cmdq-sync interrupt iommu/arm-smmu-v3: Use CMD_SYNC completion interrupt iommu/arm-smmu-v3: Poll for CMD_SYNC outside cmdq lock iommu/arm-smmu-v3: Use burst-polling for sync completion drivers/iommu/arm-smmu-v3.c | 194 ++++++++++++++++++++++++++++++-------------- 1 file changed, 135 insertions(+), 59 deletions(-) -- 2.13.4.dirty