diff options
| author | Eric Joyner <erj@FreeBSD.org> | 2023-01-30 21:34:03 +0000 |
|---|---|---|
| committer | Eric Joyner <erj@FreeBSD.org> | 2023-01-31 21:57:42 +0000 |
| commit | 53545967642d850eee4f2dd9fa27cae52ae981b9 (patch) | |
| tree | 5688fd0b88783f0f0b12d9f7781eb5f489457e37 | |
| parent | dc57ec3ca0fbd11d351a4ca1e305a29dd1dc74f5 (diff) | |
| download | src-53545967642d850eee4f2dd9fa27cae52ae981b9.tar.gz src-53545967642d850eee4f2dd9fa27cae52ae981b9.zip | |
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@
MFC after: 1 day
Differential Revision: https://reviews.freebsd.org/D38285
| -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 21e81223f6ee..b860e4de3817 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]; |