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authorChuck Tuffli <chuck@FreeBSD.org>2025-07-26 22:09:59 +0000
committerChuck Tuffli <chuck@FreeBSD.org>2025-07-26 23:01:42 +0000
commit92dfc3fbcd79422a4586590edabe483f361b7e0e (patch)
tree5bc65b0c922ec4b574db21096be462da7de078eb /sys/modules/syscons/(public-mirror)
parent7507d6ca0e754b2bb9354b54b3a20f73cfe1f06a (diff)
bhyve: Report SVM as disabled on AMDHEADmain
bhyve with a Windows 2025 guest will hang/freeze with the message rdmsr to register 0xc0010114 on a system with an AMD Ryzen 5. Evidently, recent versions of Windows ignore the CPUID bits and still read this MSR. Fix is to report Secure Virtual Machine (SVM) mode as disabled in the VM CR. PR: 288308 Reported by: demik+freebsd@lostwave.net Tested by: demik+freebsd@lostwave.net Obtained from: Illumos MFC after: 1 week Reviewed by: avg, markj, jhb Differential Revision: https://reviews.freebsd.org/D51480
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