[LinuxBIOS] [PATCH][v3] Merge hlt() into cpu.h (svn resync)
Peter Stuge
peter at stuge.se
Thu Jul 12 04:27:46 CEST 2007
On Thu, Jul 12, 2007 at 03:44:23AM +0200, Uwe Hermann wrote:
> Btw, why does die() do an endless loop around hlt()? Is there a
> reason a hlt() will _not_ immediately halt the CPU? Can that
> happen?
It should halt, but the CPU may wake up again and continue executing
if an interrupt arrives. All should be masked, but you never know..
> If so, shall we move the loop into hlt() itself?
I don't think so. hlt() is just a C wrapper around the instruction.
Eventually I imagine building a panic room into die() so that
recovery can be made via console on fatal errors. Ideally with
some kind of stub for debugging stage0 and definately one for
initram.
> Merge hlt() into cpu.h where it belongs. Add some documentation.
>
> Signed-off-by: Uwe Hermann <uwe at hermann-uwe.de>
Acked-by: Peter Stuge <peter at stuge.se>
More information about the coreboot
mailing list