On Mon, Jul 20, 2020 at 05:20:15PM +0200, Jan Beulich wrote: > wakeup_32 sets %ds and %es to BOOT_DS, while leaving %fs at what > wakeup_start did set it to, and %gs at whatever BIOS did load into it. > All of this may end up confusing the first load_segments() to run on > the BSP after resume, in particular allowing a non-nul selector value > to be left in %fs. > > Alongside %ss, also put all other data segment registers into the same > state that the boot and CPU bringup paths put them in. > > Reported-by: M. Vefa Bicakci <m....@runbox.com> > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Roger Pau Monné <roger....@citrix.com> I wouldn't mind if the added chunk was placed before loading %ss, so that the context of what's in %eax would be clearer. Roger.
