The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From d4af3c4b81f4cd5662baa6f1492f998d89783318 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Date: Tue, 29 Oct 2019 10:15:39 -0700
Subject: [PATCH] arm64: cpufeature: Enable Qualcomm Falkor/Kryo errata 1003
With the introduction of 'cce360b54ce6 ("arm64: capabilities: Filter the
entries based on a given mask")' the Qualcomm Falkor/Kryo errata 1003 is
no long applied.
The result of not applying errata 1003 is that MSM8996 runs into various
RCU stalls and fails to boot most of the times.
Give 1003 a "type" to ensure they are not filtered out in
update_cpu_capabilities().
Fixes: cce360b54ce6 ("arm64: capabilities: Filter the entries based on a given mask")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Mark Brown <broonie@xxxxxxxxxx>
Suggested-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 6c3b10a41bd8..7f9b699969c7 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -816,6 +816,7 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
{
.desc = "Qualcomm Technologies Falkor/Kryo erratum 1003",
.capability = ARM64_WORKAROUND_QCOM_FALKOR_E1003,
+ .type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM,
.matches = cpucap_multi_entry_cap_matches,
.match_list = qcom_erratum_1003_list,
},
