Re: [PATCH v1 04/10] x86/tdx: Handle early IO operations
From: Sean Christopherson
Date: Wed Jun 09 2021 - 18:10:57 EST
On Wed, Jun 09, 2021, Kuppuswamy Sathyanarayanan wrote:
> + * Handle early IO, mainly for early printks serial output.
> + * This avoids anything that doesn't work early on, like tracing
> + * or printks, by calling the low level functions directly. Any
> + * problems are handled by falling back to a standard early exception.
> + *
> + * Assumes the IO instruction was using ax, which is enforced
> + * by the standard io.h macros.
> + */
> +static __init bool tdx_early_io(struct pt_regs *regs, u32 exit_qual)
If y'all insist on shoving "tdg" down people's throats, at least get it right.