x86/fred: Add Kconfig option for FRED (CONFIG_X86_FRED)

Add the configuration option CONFIG_X86_FRED to enable FRED.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Shan Kang <shan.kang@intel.com>
Link: https://lore.kernel.org/r/20231205105030.8698-6-xin3.li@intel.com
This commit is contained in:
H. Peter Anvin (Intel) 2023-12-05 02:49:54 -08:00 committed by Thomas Gleixner
parent 51383e741b
commit 2cce95918d

View File

@ -496,6 +496,15 @@ config X86_CPU_RESCTRL
Say N if unsure.
config X86_FRED
bool "Flexible Return and Event Delivery"
depends on X86_64
help
When enabled, try to use Flexible Return and Event Delivery
instead of the legacy SYSCALL/SYSENTER/IDT architecture for
ring transitions and exception/interrupt handling if the
system supports.
if X86_32
config X86_BIGSMP
bool "Support for big SMP systems with more than 8 CPUs"