x86/bugs: Use the cpu_smt_possible() helper instead of open-coded code

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There is a helper function to check if SMT is available. Use this helper
instead of performing the check manually.

The helper function cpu_smt_possible() does exactly the same thing as
was being done manually inside spectre_v2_user_select_mitigation().
Specifically, it returns false if CONFIG_SMP is disabled, otherwise
it checks the cpu_smt_control global variable.

This change improves code consistency and reduces duplication.

No change in functionality intended.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Cc: David Kaplan <David.Kaplan@amd.com>
Link: https://lore.kernel.org/r/20241031-x86_bugs_last_v2-v2-1-b7ff1dab840e@debian.org

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Breno Leitao 2024-10-31 04:06:16 -07:00 • committed by Ingo Molnar

parent b8ce25df29

commit 2a08b83271

1 changed files with 1 additions and 6 deletions

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arch/x86/kernel/cpu/bugs.c

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