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From: Xin Li <xin3.li@intel.com>
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Subject: [PATCH RESEND v9 02/36] x86/fred: Add Kconfig option for FRED
(CONFIG_X86_FRED)
Date: Tue, 1 Aug 2023 01:32:44 -0700
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| Series |
x86: enable FRED for x86-64
|
|
Commit Message
Li, Xin3
Aug. 1, 2023, 8:32 a.m. UTC
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"