Hi,
Edit 09.04.2021: The error messeages are not "hv_balloon", the error messeages are:
[ 36.538399] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7
[ 36.569184] x86/PAT: Xorg:1703 map pfn expected mapping type uncached-minus for [mem 0xf8800000-0xf8ffffff], got write-back
[ 36.763840] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7
[ 36.764575] x86/PAT: Xorg:1785 map pfn expected mapping type uncached-minus for [mem 0xf8800000-0xf8ffffff], got write-back
[ 36.865129] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7
[ 36.865965] x86/PAT: Xorg:1803 map pfn expected mapping type uncached-minus for [mem 0xf8800000-0xf8ffffff], got write-back
[ 36.953439] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7
[ 36.954553] x86/PAT: Xorg:1819 map pfn expected mapping type uncached-minus for [mem 0xf8800000-0xf8ffffff], got write-back
[ 37.169868] Lockdown: Xorg: raw io port access is restricted; see man kernel_lockdown.7
[ 37.170882] x86/PAT: Xorg:1853 map pfn expected mapping type uncached-minus for [mem 0xf8800000-0xf8ffffff], got write-back
Original post:
since the update to UEK 5.4.17-2102.200.13.el8uek.x86_64 our systems dont boot anymore with the error message: hv_balloon: Max. dynamic size
Downgrading to the previous kernel (5.4.17-2036.104.5.el8uek.x86_64) solved this issue!
For all affected: this this the command to downgrade:
sudo dnf remove kernel-uek-5.4.17-2102.200.13.el8uek.x86_64
Regards