diff options
| author | Eric Joyner <erj@FreeBSD.org> | 2023-01-30 21:34:03 +0000 |
|---|---|---|
| committer | Eric Joyner <erj@FreeBSD.org> | 2023-02-06 22:48:19 +0000 |
| commit | 7aaa7dad32ca350e972d7c4688e39c50d818b45b (patch) | |
| tree | a5cc48b951abeaef30e6c842b3a1674bf0c22fae /sys/amd64/vmm | |
| parent | 4da78e7a355e702d5cc353f06669b6ef6f43b559 (diff) | |
vtd: Increase DRHD_MAX_UNITS
Observed on a couple Ice Lake-SP platforms (Intel Coyote Pass, Dell
R750), there are more than 8 DRHD sections enumerated in the DMAR ACPI
section. Since the previous limit was 8, this resulted in some of these
not being parsed by vtd when the iommu is initialized; in this case when
PCI devices are being passthru'd to a bhyve VM.
This omission later causes a kernel panic later in initialization when
devices could not be found in a valid DRHD scope because the DHRD
containing the device's scope was not added to vtd.
Signed-off-by: Eric Joyner <erj@FreeBSD.org>
PR: 268486
Sponsored by: Intel Corporation
Reviewed by: rew@, corvink@
Differential Revision: https://reviews.freebsd.org/D38285
(cherry picked from commit 53545967642d850eee4f2dd9fa27cae52ae981b9)
Diffstat (limited to 'sys/amd64/vmm')
| -rw-r--r-- | sys/amd64/vmm/intel/vtd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/amd64/vmm/intel/vtd.c b/sys/amd64/vmm/intel/vtd.c index 8f06dc823364..c3af7779a7ca 100644 --- a/sys/amd64/vmm/intel/vtd.c +++ b/sys/amd64/vmm/intel/vtd.c @@ -117,7 +117,7 @@ struct domain { static SLIST_HEAD(, domain) domhead; -#define DRHD_MAX_UNITS 8 +#define DRHD_MAX_UNITS 16 static ACPI_DMAR_HARDWARE_UNIT *drhds[DRHD_MAX_UNITS]; static int drhd_num; static struct vtdmap *vtdmaps[DRHD_MAX_UNITS]; |