On 9/21/21 4:34 PM, Kirill A. Shutemov wrote:

On Tue, Sep 21, 2021 at 11:27:17PM +0200, Borislav Petkov wrote:

quoted

On Wed, Sep 22, 2021 at 12:20:59AM +0300, Kirill A. Shutemov wrote:

quoted

I still believe calling cc_platform_has() from __startup_64() is totally
broken as it lacks proper wrapping while accessing global variables.

Well, one of the issues on the AMD side was using boot_cpu_data too
early and the Intel side uses it too. Can you replace those checks with
is_tdx_guest() or whatever was the helper's name which would check
whether the the kernel is running as a TDX guest, and see if that helps?

There's no need in Intel check this early. Only AMD need it. Maybe just
opencode them?

Any way you can put a gzipped/bzipped copy of your vmlinux file somewhere 
I can grab it from and take a look at it?

Thanks,
Tom