Re: [patch v3 31/36] x86/apic: Provide cpu_primary_thread mask

[Thomas Gleixner]

On Mon, May 29 2023 at 23:31, Kirill A. Shutemov wrote:
> Aaand the next patch that breaks TDX boot is... <drum roll>
>
>       x86/smpboot/64: Implement arch_cpuhp_init_parallel_bringup() and enable 
> it
>
> Disabling parallel bringup helps. I didn't look closer yet. If you have
> an idea let me know.

So how does TDX end up with actual parallel bringup?

        if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT)) {
                pr_info("Parallel CPU startup disabled due to guest state 
encryption\n");
                return false;
        }

It should take that path, no?

Thanks,

        tglx