cpu/x86/Kconfig: Mark 64bit support as stable
With SMM holding page tables itself, we can consider SMM support stable
and safe enough for general use.
Also update the respective documentation.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Ifcf0a1a5097a2d7c064bb709ec0b09ebee13a47d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80338
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
diff --git a/configs/config.lenovo_t400_vboot_and_debug b/configs/config.lenovo_t400_vboot_and_debug
index f79d773..6738e43 100644
--- a/configs/config.lenovo_t400_vboot_and_debug
+++ b/configs/config.lenovo_t400_vboot_and_debug
@@ -12,5 +12,5 @@
CONFIG_DEBUG_ADA_CODE=y
CONFIG_H8_FN_KEY_AS_VBOOT_RECOVERY_SW=y
CONFIG_VBOOT=y
-CONFIG_USE_EXP_X86_64_SUPPORT=y
+CONFIG_USE_X86_64_SUPPORT=y
CONFIG_ARCH_X86_64_PGTBL_LOC=0xfffe8000