https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211713
--- Comment #78 from Ka Ho Ng <khng...@gmail.com> --- (In reply to Warner Losh from comment #77) The commit message of the patch is actually inside this commit: https://github.com/khng300/freebsd/commit/c75f08495fde5dee08e4b24f399f2d70a77254a6 To put simply, some controllers give zeroes for MMIO read on certain regions, and subsequently leading to MSI-X not being enabled at all (the interrupts will first be masked and it will be in effect, however the subsequent unmask will not work at all). As a result the corresponding bit in PBA will be set by the controller since the interrupt is actually not enabled after being masked (recall that the read of vector control word will always give zero). Such modification is actually made by taking a reference at the interrupt unmask implementation of Illumos kernel, by not considering the existing content of vector control bit but simply overwriting the word. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
