APPLIED[K]: [PATCH Kinetic 0/1] Fix boot on some cloud instance types

[Andrea Righi]

On Thu, Jul 28, 2022 at 09:35:17AM -0300, Thadeu Lima de Souza Cascardo wrote:
> [Impact]
> Some cloud instance types do not provide IBPB support and yet are AMD
> processors vulnerable to Retbleed. In those cases, the kernel will try
> to use IBPB when calling EFI firmware and will crash at boot.
> 
> [Fix]
> The fix was submitted upstream just recently, so it's still SAUCE.
> 
> [Potential regression]
> Some systems might be left vulnerable to theoretical speculation info
> leak attacks.

Applied to kinetic/linux.

Thanks!
-Andrea