linux-kernel - Re: [PATCH v7 3/3] PCI/DOE: Allow enabling DOE without CXL

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Message-ID: <20230904161824.00001076@Huawei.com>
Date:   Mon, 4 Sep 2023 16:18:24 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Alistair Francis <alistair23@...il.com>
CC:     <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
        <lukas@...ner.de>, <alex.williamson@...hat.com>,
        <christian.koenig@....com>, <kch@...dia.com>,
        <gregkh@...uxfoundation.org>, <logang@...tatee.com>,
        <linux-kernel@...r.kernel.org>, <chaitanyak@...dia.com>,
        <rdunlap@...radead.org>,
        Alistair Francis <alistair.francis@....com>
Subject: Re: [PATCH v7 3/3] PCI/DOE: Allow enabling DOE without CXL

On Mon,  4 Sep 2023 15:43:29 +1000
Alistair Francis <alistair23@...il.com> wrote:

> PCIe devices (not CXL) can support DOE as well, so allow DOE to be
> enabled even if CXL isn't.

But surely everyone enables CXL? :)

> 
> Signed-off-by: Alistair Francis <alistair.francis@....com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
> v7:
>  - Initial patch
> 
>  drivers/pci/Kconfig | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index 49bd09c7dd0a..a1223f46a902 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -117,7 +117,10 @@ config PCI_ATS
>  	bool
>  
>  config PCI_DOE
> -	bool
> +	bool "Enable PCI Data Object Exchange (DOE) support"
> +	help
> +	  Say Y here if you want be able to communicate with PCIe DOE
> +	  mailboxes.
>  
>  config PCI_ECAM
>  	bool