Re: [SeaBIOS] [PATCH] smp: Fix smp race introduced in 0673b787

[Kevin O'Connor]

On Wed, Mar 11, 2015 at 05:56:23PM -0400, Kevin O'Connor wrote:
> In 0673b787 the QEMU SMP init code was changed to run in 32bit mode.
> Unfortunately, the transition32 assembler function is not
> multi-processor safe, because it modifies the global RTC index
> register.  This race condition led to sporadic failures when emulating
> machines with a large number of processors.
>
> This patch changes the entry_smp code to use a variant of transition32
> that does not touch the RTC registers.

FYI, I pushed this change to the main SeaBIOS repo.

-Kevin