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Subject[PATCH RESEND v9 02/36] x86/fred: Add Kconfig option for FRED (CONFIG_X86_FRED)
Date
From: "H. Peter Anvin (Intel)" <hpa@zytor.com>

Add the configuration option CONFIG_X86_FRED to enable FRED.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Tested-by: Shan Kang <shan.kang@intel.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
---
arch/x86/Kconfig | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7422db409770..700d94cb8330 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -494,6 +494,15 @@ 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"
--
2.34.1
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