Qualcomm Kryo 600-series Gold cores appear to have a derivative of an
ARM Cortex A78 / ARM Cortex X1 in them. Since these need Spectre
mitigation then the Kyro 600-series Gold/Prime 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_6XX_GOLD and MIDR_QCOM_KRYO_6XX_PRIME are not
defined. Those 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 | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index 212481726f04..67aa54017dea 100644
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -860,6 +860,8 @@ u8 spectre_bhb_loop_affected(int scope)
MIDR_ALL_VERSIONS(MIDR_CORTEX_X2),
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2),
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1),
+ MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_6XX_GOLD),
+ MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_6XX_PRIME),
{},
};
static const struct midr_range spectre_bhb_k24_list[] = {
--
2.47.0.338.g60cca15819-goog
