Re: [RFC PATCH 1/5] x86/kexec: Do unconditional WBINVD for bare-metal in stop_this_cpu()

From: Edgecombe, Rick P
Date: Wed Mar 19 2025 - 13:07:02 EST


On Wed, 2025-03-19 at 09:41 -0700, Dave Hansen wrote:
> They _theoretically_ need a WBINVD at kexec. But there
> might be enough other things happening during kexec (including other
> WBINVD's) to keep us from getting bitten in practice.

Thanks Dave. It seems there have been a number of issues in this step, so just
trying to make sure I understand how it is supposed to work before we change it.