Date: Mon, 15 Nov 2021 18:12:30 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251046 --- Comment #17 from commit-hook@FreeBSD.org --- A commit in branch stable/13 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=e002d882ac2094047a8d5a8bef9252e5006b5828 commit e002d882ac2094047a8d5a8bef9252e5006b5828 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2021-10-09 15:36:19 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2021-11-15 18:11:52 +0000 bhyve: Map the MSI-X table unconditionally for passthrough It is possible for the PBA to reside in the same page as the MSI-X table. And, while devices are not supposed to do this, at least some Intel wifi devices place registers in a page shared with the MSI-X table. To handle the first case we currently map the PBA page using /dev/mem, and the second case is not handled. Kill two birds with one stone: map the MSI-X table BAR using the PCIOCBARMMAP ioctl instead of /dev/mem, and map the entire table so that accesses beyond the bounds of the table can be emulated. Regions of the BAR not containing the table are left unmapped. PR: 251046 Reviewed by: bz, grehan, jhb Sponsored by: The FreeBSD Foundation (cherry picked from commit 7fa2335347362378322a4d27cb40f6e6cd5dd0fb) usr.sbin/bhyve/pci_emul.h | 4 +- usr.sbin/bhyve/pci_passthru.c | 186 +++++++++++++++++------------------------- 2 files changed, 76 insertions(+), 114 deletions(-) -- You are receiving this mail because: You are on the CC list for the bug.