From 747ad8d557645b8c9adb83334a620426e4c9d60f Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Mon, 12 Sep 2022 17:22:05 +0100 Subject: [PATCH] arm64: alternatives: proton-pack: prepare for cap changes The spectre patching callbacks use cpus_have_final_cap(), and subsequent patches will make it invalid to call cpus_have_final_cap() before alternatives patching has completed. In preparation for said change, this patch modifies the spectre patching callbacks use cpus_have_cap(). This is not subject to patching, and will dynamically check the cpu_hwcaps array, which is functionally equivalent to the existing behaviour. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland Reviewed-by: Joey Gouly Cc: Ard Biesheuvel Cc: James Morse Cc: Marc Zyngier Cc: Will Deacon Reviewed-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20220912162210.3626215-4-mark.rutland@arm.com Signed-off-by: Catalin Marinas --- arch/arm64/kernel/proton-pack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index 40be3a7c2c531..8010b2e573fac 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -586,7 +586,7 @@ void __init spectre_v4_patch_fw_mitigation_enable(struct alt_instr *alt, if (spectre_v4_mitigations_off()) return; - if (cpus_have_final_cap(ARM64_SSBS)) + if (cpus_have_cap(ARM64_SSBS)) return; if (spectre_v4_mitigations_dynamic()) -- 2.30.2