linux-kernel - Re: [PATCH 1/2] PCI: hv: Make the code arch neutral

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Message-ID: <YUKiUuwPfuGEFqr+@boqun-archlinux>
Date:   Thu, 16 Sep 2021 09:48:02 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     Sunil Muthuswamy <sunilmut@...rosoft.com>
Cc:     Michael Kelley <mikelley@...rosoft.com>,
        Boqun Feng <Boqun.Feng@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Dexuan Cui <decui@...rosoft.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof Wilczyński" <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Wei Liu <wei.liu@...nel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] PCI: hv: Make the code arch neutral

On Mon, Sep 13, 2021 at 05:36:46PM +0000, Sunil Muthuswamy wrote:
> This patch makes the Hyper-V vPCI code architectural neutral by
> moving the architectural dependent pieces into arch specific
> code. This allows for the implementation of Hyper-V vPCI for
> other architecture such as ARM64.
> 
> There are no functional changes expected from this patch.
> 
> Signed-off-by: Sunil Muthuswamy <sunilmut@...rosoft.com>

This overall looks good to me, I think you may want to base on 5.15-rc1
which has Michael's and my patches on which this patchset depends.

A small nit below:

[...]
> diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
> index 62dbe98d1fe1..b7213b57b4ec 100644
> --- a/drivers/pci/controller/pci-hyperv.c
> +++ b/drivers/pci/controller/pci-hyperv.c
> @@ -44,8 +44,8 @@
>  #include <linux/delay.h>
>  #include <linux/semaphore.h>
>  #include <linux/irqdomain.h>
> -#include <asm/irqdomain.h>
> -#include <asm/apic.h>
> +//#include <asm/irqdomain.h>
> +//#include <asm/apic.h>

remove the commented out #include too.

Regards,
Boqun

>  #include <linux/irq.h>
>  #include <linux/msi.h>
>  #include <linux/hyperv.h>
[...]