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    SubjectRe: [RFC PATCH 5/9] cxl/mem: Find device capabilities
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    On 11/11/20 12:43 AM, Ben Widawsky wrote:

    > + case CXL_CAPABILITIES_CAP_ID_SECONDARY_MAILBOX:
    > + dev_dbg(&cxlm->pdev->dev,
    > + "found UNSUPPORTED Secondary Mailbox capability\n");

    Per spec, the secondary mailbox is intended for use by platform
    firmware, so Linux should never be using it anyway. Maybe that message
    is slightly misleading?

    Jon.

    P.S. Related - I've severe doubts about the mailbox approach being
    proposed by CXL and have begun to push back through the spec org.

    --
    Computer Architect

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