x86/fred: Invoke FRED initialization code to enable FRED

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Let cpu_init_exception_handling() call cpu_init_fred_exceptions() to
initialize FRED. However if FRED is unavailable or disabled, it falls
back to set up TSS IST and initialize IDT.

Co-developed-by: Xin Li <xin3.li@intel.com>
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>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Shan Kang <shan.kang@intel.com>
Link: https://lore.kernel.org/r/20231205105030.8698-36-xin3.li@intel.com

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H. Peter Anvin (Intel) 2023-12-05 02:50:24 -08:00 • committed by Borislav Petkov (AMD)

parent cdd99dd873

commit 208d8c79fd

3 changed files with 27 additions and 7 deletions

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22

arch/x86/kernel/cpu/common.c

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7

arch/x86/kernel/irqinit.c

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5

arch/x86/kernel/traps.c

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