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x86/cpu: Move 32-bit SEP setup into identify_cpu()

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identify_boot_cpu() and identify_secondary_cpu() both call
enable_sep_cpu() under CONFIG_X86_32 immediately after identify_cpu().

Do it once and drop the ifdefs while at it.

No functional changes.

Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://patch.msgid.link/20260916195203.1099646-5-ihor.solodrai@linux.dev
This commit is contained in:
Ihor Solodrai 2026-09-16 12:52:02 -07:00 committed by Borislav Petkov (AMD)
parent ad86fe2134
commit db349783ca
1 changed files with 3 additions and 6 deletions
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9
arch/x86/kernel/cpu/common.c
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@ -2128,6 +2128,9 @@ static void identify_cpu(struct cpuinfo_x86 *c)
mcheck_cpu_init(c);
numa_add_cpu(smp_processor_id());
if (IS_ENABLED(CONFIG_X86_32))
enable_sep_cpu();
}
/*
@ -2165,9 +2168,6 @@ static __init void identify_boot_cpu(void)
identify_cpu(&boot_cpu_data);
if (HAS_KERNEL_IBT && cpu_feature_enabled(X86_FEATURE_IBT))
pr_info("CET detected: Indirect Branch Tracking enabled\n");
#ifdef CONFIG_X86_32
enable_sep_cpu();
#endif
cpu_detect_tlb(&boot_cpu_data);
setup_cr_pinning();
@ -2187,9 +2187,6 @@ void identify_secondary_cpu(unsigned int cpu)
c->cpu_index = cpu;
identify_cpu(c);
#ifdef CONFIG_X86_32
enable_sep_cpu();
#endif
x86_spec_ctrl_setup_ap();
update_srbds_msr();
if (boot_cpu_has_bug(X86_BUG_GDS))