[SRU][AWS-{B,F,G}] enable PCI write-combine for arm64
Kamal Mostafa
kamal at canonical.com
Wed Sep 2 14:50:16 UTC 2020
BugLink: https://bugs.launchpad.net/bugs/1893817
To improve PCI performance on arm64 AWS instances, enable arch_can_pci_mmap_wc()
via the patch:
From: Clint Sbisa <csbisa at amazon.com>
Subject: [PATCH] arm64: Enable PCI write-combine resources under sysfs
https://lore.kernel.org/linux-pci/20200831151827.pumm2p54fyj7fz5s@amazon.com/
Supplied here are two versions of this one-liner patch:
[PATCH][AWS-B] <-- for linux-aws/bionic master (v4.15)
[PATCH][AWS-{F,G}] <-- for linux-aws/{focal and groovy} master
I have smoke-tested this on AWS ARM instances.
-Kamal
-----
Clint Sbisa (1):
UBUNTU: SAUCE: arm64: Enable PCI write-combine resources under sysfs
arch/arm64/include/asm/pci.h | 1 +
1 file changed, 1 insertion(+)
--
2.17.1
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