On 8/20/2025 4:55 PM, Huang, Kai wrote: > On Wed, 2025-08-20 at 14:18 +0530, Nikunj A. Dadhania wrote: >>> - Continue on with snp_launch_start() if default_tsc_khz is '0'. AFAICT, >>> continuing on doesn't put the host at (any moer) risk. [Kai] >> >> If I hack default_tsc_khz as '0', SNP guest kernel with SecureTSC spits out >> couple of warnings and finally panics: >> > > It's a surprise that the SEV_CMD_SNP_LAUNCH_START didn't fail in such > configuration. :-) As mentioned here[1], this is an unsupported configuration as per the SNP Firmware ABI. Regards, Nikunj 1. https://lore.kernel.org/all/c3e638e9-631f-47af-b0d2-06cea949ec1e@xxxxxxx/
