From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 207099] New: VM fails to boot with invariant tsc enabled with kvm_amd
Date: Sat, 04 Apr 2020 11:38:31 +0000 [thread overview]
Message-ID: <bug-207099-28872@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=207099
Bug ID: 207099
Summary: VM fails to boot with invariant tsc enabled with
kvm_amd
Product: Virtualization
Version: unspecified
Kernel Version: 5.6.0 - 5.6.2
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: kvm
Assignee: virtualization_kvm@kernel-bugs.osdl.org
Reporter: geggen54@gmail.com
Regression: No
After the 5.6.0 release my windows 10 VM running on AMD 3950x fails to boot
when option "migratable=no,+invtsc" is enabled. The VM starts the boot process
but after a few seconds I get a bluescreen with the error "Kernel security
check failed".
Neither the host or guest has any logs that I can find with any more details on
the issue, or even that it happens at all.
The issue is reproducible at least for me with a minimum set of options in QEMU
with no enlightenments:
"-M type=q35,accel=kvm,kernel_irqchip=on -cpu host, kvm=off,
migratable=no,+invtsc, topoext -smp 24,sockets=1, cores=12, threads=2
-enable-kvm"
I've tried changing the options kvm_amd.avic and nested to no avail.
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