linux-kernel - Re: [PATCH v13 22/24] virt: gunyah: Add irqfd interface

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Message-ID: <368ea795-68df-ebf7-18b5-3f5abfe2d189@linaro.org>
Date:   Fri, 9 Jun 2023 13:28:48 -0500
From:   Alex Elder <elder@...aro.org>
To:     Elliot Berman <quic_eberman@...cinc.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
        Jonathan Corbet <corbet@....net>
Cc:     Murali Nalajala <quic_mnalajal@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>,
        Carl van Schaik <quic_cvanscha@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Will Deacon <will@...nel.org>, Andy Gross <agross@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v13 22/24] virt: gunyah: Add irqfd interface

On 6/9/23 1:22 PM, Elliot Berman wrote:
>>>
>>> +enum gh_irqfd_flags {
>>> +    GH_IRQFD_FLAGS_LEVEL        = 1UL << 0,
>>
>>      BIT(0),            /* ? */
>>
> 
> The BIT macro isn't a standard C macro and isn't defined by Linux, so it 
> causes compile errors at least for me when I use it in userspace.

OK that makes sense.  I hadn't thought about this
being a user space header when I made the comment.

					-Alex