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.
