Re: [PATCH v2 3/4] x86/mm: Flush global TLB when switching to trampoline page-table

[Joerg Roedel]

On Wed, Sep 29, 2021 at 08:07:10AM -0700, Dave Hansen wrote:
> 	/*
> 	 * The CR3 writes above may not flush global TLB entries.
> 	 * Stale, global entries from previous sets of page tables may
> 	 * still be present.  Flush those stale entries.
> 	 *
> 	 * This ensures that memory accessed while running with
> 	 * trampoline_pgd is *actually* mapped into trampoline_pgd.
> 	 */

Yes, this is better. I replaced my comment with this one (only did some
minor rewording).

Thanks,

	Joerg