On Tue 29 Oct 10:39 PDT 2019, Will Deacon wrote:

On Tue, Oct 29, 2019 at 10:15:39AM -0700, Bjorn Andersson wrote:

...

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@vger.kernel.org Reported-by: Mark Brown broonie@kernel.org Suggested-by: Will Deacon will@kernel.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org

---

Changes since v1:

• s/ARM64_CPUCAP_SCOPE_LOCAL_CPU/ARM64_CPUCAP_LOCAL_CPU_ERRATUM/
• Dropped 1009 "fix" as it already had a type from ERRATA_MIDR_RANGE_LIST()

arch/arm64/kernel/cpu_errata.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index df9465120e2f..3facd5ca52ed 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -780,6 +780,7 @@ 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, },

-- 2.23.0

Thanks, I'll pick this up as a fix.

Thank you!