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| author | H. Peter Anvin (Intel) <hpa@zytor.com> | 2023-12-05 11:49:54 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2024-01-25 19:10:30 +0100 |
| commit | 2cce95918d635126098d784c040b59333c464b20 (patch) | |
| tree | aa45c7ea918c0fd789da42888d8f742d2f73546e | |
| parent | Documentation/x86/64: Add documentation for FRED (diff) | |
| download | linux-2cce95918d635126098d784c040b59333c464b20.tar.xz linux-2cce95918d635126098d784c040b59333c464b20.zip | |
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
| -rw-r--r-- | arch/x86/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 5edec175b9bf..854ab38a359a 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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" |