From: David S. Miller Date: Thu, 6 Oct 2016 05:44:56 +0000 (-0400) Subject: Merge branch 'sparc-pcie-perf' X-Git-Tag: v4.9-rc1~114^2~1 X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=27f145e74c274fa6e40056f3a8d5dc3563bd7369;hp=aa7bde1a8b49391d34f17905a04c3acf7770283d;p=cascardo%2Flinux.git Merge branch 'sparc-pcie-perf' Chris Hyser says: ==================== sparc64: PCIe performance enhancements Ver 2 is redone for 4.8 where commit 00085f1efa387a8ce100e3734920f7639c80caa3 changed DMA attributes from struct pointer to unsigned long. This set of patches initiates a series of PCIe performance enhancement patch submittals. Patch 1/2 enables version 2 of the SPARC sun4v IOMMU I/O address translation services need for subsequent enhancements. Patch 2/2 allows drivers to specify DMA_ATTR_WEAK_ORDERING via DMA attributes to the SPARC DMA mapping routines enabling "relaxed ordering" for the buffer being mapped. [Still relevant write-up] PCI-Express Relaxed Ordering and the Sun SPARC Enterprise M-class Servers https://blogs.oracle.com/olympus/entry/relaxed_ordering ==================== Signed-off-by: David S. Miller ---