[PATCHv6 00/16] x86/tdx: Add kexec support

[Nikolay Borisov]

On 30.01.24 г. 15:43 ч., Paolo Bonzini wrote:
> On 1/24/24 13:55, Kirill A. Shutemov wrote:
>> The patchset adds bits and pieces to get kexec (and crashkernel) work on
>> TDX guest.
>>
>> The last patch implements CPU offlining according to the approved ACPI
>> spec change poposal[1]. It unlocks kexec with all CPUs visible in the 
>> target
>> kernel. It requires BIOS-side enabling. If it missing we fallback to 
>> booting
>> 2nd kernel with single CPU.
>>
>> Please review. I would be glad for any feedback.
> 
> Hi Kirill,
> 
> I have a very basic question: is there a reason why this series does not 
> revert commit cb8eb06d50fc, "x86/virt/tdx: Disable TDX host support when 
> kexec is enabled"?

While on the topic, Paolo do you think it's  better to have a runtime 
disable of kexec rather than at compile time:

[RFC PATCH] x86/virt/tdx: Disable KEXEC in the presence of TDX

20240118160118.1899299-1-nik.borisov at suse.com

I'm trying to get traction for this patch.


> 
> Thanks,
> 
> Paolo
> 
>