Re: [PATCH] libs/guest: Fix migration compatibility with a security-patched Xen 4.13

2024-12-03 Thread Jan Beulich
On 03.12.2024 01:16, Andrew Cooper wrote: > xc_cpuid_apply_policy() provides compatibility for migration of a pre-4.14 VM > where no CPUID data was provided in the stream. > > It guesses the various max-leaf limits, based on what was true at the time of > writing, but this was not correctly adapte

[PATCH] libs/guest: Fix migration compatibility with a security-patched Xen 4.13

2024-12-02 Thread Andrew Cooper
xc_cpuid_apply_policy() provides compatibility for migration of a pre-4.14 VM where no CPUID data was provided in the stream. It guesses the various max-leaf limits, based on what was true at the time of writing, but this was not correctly adapted when speculative security issues forced the advert