NAK: [SRU][AWS-{B,F,G}] enable PCI write-combine for arm64

[Kamal Mostafa]

NAK applying this patch, pending resolution of upstream mailing list debate.

And thanks Stefan and Andrea for your reviews.

 -Kamal

On Wed, Sep 02, 2020 at 07:50:16AM -0700, Kamal Mostafa wrote:
> 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
> 
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team