On 2/14/25 10:24, Paraskevas Nik wrote:
Hello,
I am trying to build libvirt v10.5.0 to support SEV-SNP but when I run
virsh domcapabilities I am getting <sev support=no>. If I install
libvirt 8.0.0 using apt install libvirt-daemon-system qemu-kvm them sev
shows as supported. Everything is enabled on the system about SEV, SEV-
ES, SEV-SNP. Is there a specific build option to enable SEV?
*# cat /sys/module/kvm_amd/parameters/sev*
*Y*
**
***CPU: AMD EPYC 9254*
*
*
*# dmesg | grep -i sev*
*[ 0.000000] SEV-SNP: RMP table physical range [0x000000002d500000 -
0x000000004ddfffff]*
*[ 0.009021] SEV-SNP: Reserving start/end of RMP table on a 2MB
boundary [0x000000002d400000]*
*[ 11.184492] ccp 0000:01:00.5: sev enabled*
*[ 12.664210] ccp 0000:01:00.5: SEV API:1.55 build:36*
*[ 12.664217] ccp 0000:01:00.5: SEV-SNP API:1.55 build:36*
*[ 12.671343] kvm_amd: SEV enabled (ASIDs 16 - 1006)*
*[ 12.671345] kvm_amd: SEV-ES enabled (ASIDs 1 - 15)*
*[ 12.671346] kvm_amd: SEV-SNP enabled (ASIDs 1 - 15)
**Linux kernel version: 6.12
**Libvirt version: 10.5.0*
*qemu-system-x86_64 version : 9.1.0***
*
*
*If you need any other information please let me know.
Cheers*
Hi,
are you running the daemon as root? Also - if you start the daemon from
git, there's the "run" script that executes the daemon with correct
selinux label.
Also, there's 'virt-host-validate' tool that should check sev support
and print info about it.
Michal