Re: [PATCH v12 07/11] x86/smpboot: Remove early_gdt_descr on 64-bit

Thomas Gleixner
2023-03-01T10:27:31Z

On Tue, Feb 28 2023 at 21:57, David Woodhouse wrote:
> On Tue, 2023-02-28 at 22:01 +0100, Thomas Gleixner wrote:
> Empirically, yours doesn't boot and Brian's does.

Correct. It was just my sleep deprived brain which got lost in assembly
and #ifdef maze.

On UP per_cpu variables just become regular variables and gdt_page(%rdx)
with %rdx = 0 will just resolve that address.

Sorry for the noise.

Thanks,

tglx