On Mon, Jul 6, 2020 at 11:37 AM Simon Glass sjg@chromium.org wrote:
At present the APs (non-boot CPUs) are inited once and then parked ready for the OS to use them. However in some cases we want to send new requests through, such as to change MTRRs and keep them consistent across CPUs.
Change the last state of the flight plan to go into a wait loop, accepting instructions from the main CPU.
Drop cpu_map since it is not used.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Wolfgang Wallner wolfgang.wallner@br-automation.com
Changes in v3:
- s/slow/slot/
- Use C code instead of assembler to read/write callback pointers
- Update commit message to mention dropping of cpu_map
Changes in v2:
- Add more comments
arch/x86/cpu/mp_init.c | 119 +++++++++++++++++++++++++++++++++++--- arch/x86/include/asm/mp.h | 11 ++++ 2 files changed, 121 insertions(+), 9 deletions(-)
Reviewed-by: Bin Meng bmeng.cn@gmail.com