soc/intel/meteorlake: Select X86_INIT_NEED_1_SIPI Kconfig

This patch helps to save 10.200ms of booting time without any issue
seen during MP Init. All cores are out from reset and alive.

Port the Alder Lake 'commit 6526e78967 ("soc/intel/alderlake: Select X86_INIT_NEED_1_SIPI Kconfig for RPL")' also to Meteor Lake.

Additionally, no performance degradation is observed while running
benchmarks.

BUG=b:211770003
TEST=Able to boot Google, Rex to ChromeOS with all cores enabled.

Without this patch:
30:device enumeration                     1,480,217 (28,232)

With this patch:
30:device enumeration                     1,472,466 (18,334)

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Iec21470b9b34514169789c39bdc3be4e4ff6c7b5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69851
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik
2022-11-21 17:39:57 +05:30
parent 8c974509ea
commit 6a22c5f8ee

View File

@@ -90,6 +90,7 @@ config CPU_SPECIFIC_OPTIONS
select TSC_MONOTONIC_TIMER
select UDELAY_TSC
select UDK_202111_BINDING
select X86_INIT_NEED_1_SIPI
config MAX_CPUS
int