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+++ This bug was initially created as a clone of Bug #2012385 +++
Description of problem:
As subject
Version-Release number of selected component (if applicable):
kernel-4.18.0-341.el8.x86_64
libvirt-7.6.0-3.module+el8.5.0+12510+80564ecf.x86_64
How reproducible:
100%
Steps to Reproduce:
On a AMD host.
1. Enable sev:
➜ ~ modprobe -r kvm_amd
➜ ~ modprobe kvm_amd sev=1
➜ ~ cat /sys/module/kvm_amd/parameters/sev
Y
2. Run virt-host-validate:
➜ ~ virt-host-validate
QEMU: Checking for hardware virtualization : PASS
QEMU: Checking if device /dev/kvm exists : PASS
QEMU: Checking if device /dev/kvm is accessible : PASS
QEMU: Checking if device /dev/vhost-net exists : PASS
QEMU: Checking if device /dev/net/tun exists : PASS
QEMU: Checking for cgroup 'cpu' controller support : PASS
QEMU: Checking for cgroup 'cpuacct' controller support : PASS
QEMU: Checking for cgroup 'cpuset' controller support : PASS
QEMU: Checking for cgroup 'memory' controller support : PASS
QEMU: Checking for cgroup 'devices' controller support : PASS
QEMU: Checking for cgroup 'blkio' controller support : PASS
QEMU: Checking for device assignment IOMMU support : PASS
QEMU: Checking if IOMMU is enabled by kernel : PASS
QEMU: Checking for secure guest support : WARN (AMD Secure Encrypted Virtualization appears to be disabled in kernel. Add kvm_amd.sev=1 to the kernel cmdline arguments)
Actual results:
As above
Expected results:
QEMU: Checking for secure guest support : PASS
Additional info:
It is fixed on upstream:
commit 3f9c1a4bb8
Author: Jim Fehlig <jfehlig>
Date: Tue Oct 5 22:34:57 2021 -0600
tools: Fix virt-host-validate SEV detection
virt-host-validate checks if AMD SEV is enabled by verifying
/sys/module/kvm_amd/parameters/sev is set to '1'. On a system
running kernel 5.13, the parameter is reported as 'Y'. To be
extra paranoid, add a check for 'y' along with 'Y' to complement
the existing check for '1'.
Fixes: https://bugzilla.opensuse.org/show_bug.cgi?id=1188715
Signed-off-by: Jim Fehlig <jfehlig>
Reviewed-by: Andrea Bolognani <abologna>
Verify this bug with libvirt-7.9.0-1.el9.x86_64:
# modprobe -r kvm_amd
# modprobe kvm_amd sev=1
# cat /sys/module/kvm_amd/parameters/sev
Y
# virt-host-validate
QEMU: Checking for hardware virtualization : PASS
QEMU: Checking if device /dev/kvm exists : PASS
QEMU: Checking if device /dev/kvm is accessible : PASS
QEMU: Checking if device /dev/vhost-net exists : PASS
QEMU: Checking if device /dev/net/tun exists : PASS
QEMU: Checking for cgroup 'cpu' controller support : PASS
QEMU: Checking for cgroup 'cpuacct' controller support : PASS
QEMU: Checking for cgroup 'cpuset' controller support : PASS
QEMU: Checking for cgroup 'memory' controller support : PASS
QEMU: Checking for cgroup 'devices' controller support : PASS
QEMU: Checking for cgroup 'blkio' controller support : PASS
QEMU: Checking for device assignment IOMMU support : PASS
QEMU: Checking if IOMMU is enabled by kernel : PASS
QEMU: Checking for secure guest support : PASS
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (new packages: libvirt), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:2390