Re: [PATCH HVM v3 1/1] hvm: refactor set param

2021-02-09 Thread Jan Beulich
On 08.02.2021 21:00, Norbert Manthey wrote: > To prevent leaking HVM params via L1TF and similar issues on a > hyperthread pair, let's load values of domains after performing all > relevant checks, and blocking speculative execution. I'd like to suggest "..., let's load values of domains only afte

[PATCH HVM v3 1/1] hvm: refactor set param

2021-02-08 Thread Norbert Manthey
To prevent leaking HVM params via L1TF and similar issues on a hyperthread pair, let's load values of domains after performing all relevant checks, and blocking speculative execution. Furthermore, speculative barriers are re-arranged to make sure we do not allow guests running on co-located VCPUs