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    SubjectRe: [patch 3/8] PCI/MSI: Enforce that MSI-X table entry is masked for update
    On Wed, Jul 21, 2021 at 09:11:29PM +0200, Thomas Gleixner wrote:
    > The specification states:

    Maybe add "(PCIe r5.0, sec 6.1.4.5)"

    > For MSI-X, a function is permitted to cache Address and Data values
    > from unmasked MSI-X Table entries. However, anytime software unmasks a
    > currently masked MSI-X Table entry either by clearing its Mask bit or
    > by clearing the Function Mask bit, the function must update any Address
    > or Data values that it cached from that entry. If software changes the
    > Address or Data value of an entry while the entry is unmasked, the
    > result is undefined.

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