On Thu, Mar 16, 2023 at 10:21:01PM +0000, Usama Arif wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
> When bringing up a secondary CPU from do_boot_cpu(), the warm reset flag
> is set in CMOS and the starting IP for the trampoline written inside the
> BDA at 0x467. Once the CPU is running, the CMOS flag is unset and the
> value in the BDA cleared.
>
> To allow for parallel bringup of CPUs, add a reference count to track the
> number of CPUs currently bring brought up, and clear the state only when
s/bring //
> the count reaches zero.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
