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/src/northbridge/intel/x4x/Kconfig b/src/northbridge/intel/x4x/Kconfig
index 248852e..4bc12af 100644
--- a/src/northbridge/intel/x4x/Kconfig
+++ b/src/northbridge/intel/x4x/Kconfig
@@ -7,7 +7,7 @@
select INTEL_GMA_ACPI
select CACHE_MRC_SETTINGS
select BOOT_DEVICE_SPI_FLASH_NO_EARLY_WRITES
- select HAVE_EXP_X86_64_SUPPORT
+ select HAVE_X86_64_SUPPORT
select USE_DDR3
select USE_DDR2