Qualcomm Kryo 500-series Gold cores appear to have a derivative of an
ARM Cortex A77 in them. Since A77 needs Spectre mitigation then the
Kyro 500-series Gold cores also should need Spectre mitigation.
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
Yes. I know. This patch DOESN'T COMPILE because
MIDR_QCOM_KRYO_5XX_GOLD is not defined. That value needs to come from
Qualcomm or from testing on hardware, which I don't have. Qualcomm
needs to chime in to confirm that this Spectre mitigation is correct
anyway, though. I'm including this patch so it's obvious that I think
these cores also need the mitigation.
arch/arm64/kernel/proton-pack.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index b1881964e304..212481726f04 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -867,6 +867,7 @@ u8 spectre_bhb_loop_affected(int scope)
MIDR_ALL_VERSIONS(MIDR_CORTEX_A77),
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_GOLD),
+ MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_5XX_GOLD),
{},
};
static const struct midr_range spectre_bhb_k11_list[] = {
--
2.47.0.338.g60cca15819-goog
