diff options
| author | Douglas Anderson <dianders@chromium.org> | 2025-01-07 12:05:58 -0800 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2025-03-14 17:58:25 +0000 |
| commit | ed1ce841245d8febe3badf51c57e81c3619d0a1d (patch) | |
| tree | 815f1ccd389aca0ebcdab8106504034246d940ef | |
| parent | 0ad2507d5d93f39619fc42372c347d6006b64319 (diff) | |
arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
Qualcomm Kryo 400-series Gold cores have a derivative of an ARM Cortex
A76 in them. Since A76 needs Spectre mitigation via looping then the
Kyro 400-series Gold cores also need Spectre mitigation via looping.
Qualcomm has confirmed that the proper "k" value for Kryo 400-series
Gold cores is 24.
Fixes: 558c303c9734 ("arm64: Mitigate spectre style branch history side channels")
Cc: stable@vger.kernel.org
Cc: Scott Bauer <sbauer@quicinc.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Trilok Soni <quic_tsoni@quicinc.com>
Link: https://lore.kernel.org/r/20250107120555.v4.1.Ie4ef54abe02e7eb0eee50f830575719bf23bda48@changeid
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/kernel/proton-pack.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index da53722f95d4..e149efadff20 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -866,6 +866,7 @@ u8 spectre_bhb_loop_affected(int scope) MIDR_ALL_VERSIONS(MIDR_CORTEX_A76), MIDR_ALL_VERSIONS(MIDR_CORTEX_A77), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1), + MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_GOLD), {}, }; static const struct midr_range spectre_bhb_k11_list[] = { |