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| /freebsd/sys/amd64/vmm/ |
| H A D | vmm.c | diff 671a0049 Thu Dec 21 00:12:37 GMT 2023 Konstantin Belousov <kib@FreeBSD.org> vm_iommu_map()/unmap(): stop transiently wiring already wired pages
Namely, switch from vm_fault_quick_hold() to pmap_extract() KPI to
translate gpa to hpa. Assert that the looked up hpa belongs to the wired
page, as it should be for the VM which is configured for pass-throu
(this is theoretically a restriction that could be removed on newer
DMARs).
Noted by: alc
Reviewed by: alc, jhb, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D43140
diff 671a0049 Thu Dec 21 00:12:37 GMT 2023 Konstantin Belousov <kib@FreeBSD.org> vm_iommu_map()/unmap(): stop transiently wiring already wired pages
Namely, switch from vm_fault_quick_hold() to pmap_extract() KPI to
translate gpa to hpa. Assert that the looked up hpa belongs to the wired
page, as it should be for the VM which is configured for pass-throu
(this is theoretically a restriction that could be removed on newer
DMARs).
Noted by: alc
Reviewed by: alc, jhb, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D43140
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