linux-kernel - Re: [PATCH v2] arm64: Enable PCI write-combine resources under sysfs

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Date:   Fri, 18 Sep 2020 17:17:15 +0100
From:   Will Deacon <will@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Clint Sbisa <csbisa@...zon.com>
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH v2] arm64: Enable PCI write-combine resources under sysfs

On Fri, 18 Sep 2020 03:33:12 +0000, Clint Sbisa wrote:
> This change exposes write-combine mappings under sysfs for
> prefetchable PCI resources on arm64.
> 
> Originally, the usage of "write combine" here was driven by the x86
> definition of write combine. This definition is specific to x86 and
> does not generalize to other architectures. However, the usage of WC
> has mutated to "write combine" semantics, which is implemented
> differently on each arch.
> 
> [...]

Applied to arm64 (for-next/pci), thanks!

[1/1] arm64: Enable PCI write-combine resources under sysfs
      https://git.kernel.org/arm64/c/5fd39dc22027

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev