Hi


Thanks for the report. I have fixed all of them.

Suzuki

On 12/10/2021 16:31, Randy Dunlap wrote:

Hi,

On 10/12/21 6:17 AM, Suzuki K Poulose wrote:

quoted

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 077f2ec4eeb2..404f56e87e93 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig

@@ -666,6 +666,47 @@ config ARM64_ERRATUM_1508412

        If unsure, say Y.
+config ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE
+    bool
+
+config ARM64_ERRATUM_2119858
+    bool "Cortex-A710: 2119858: workaround TRBE overwriting trace 
data in FILL mode"
+    default y
+    depends on COMPILE_TEST # Until the CoreSight TRBE driver changes 
are in
+    depends on CORESIGHT_TRBE
+    select ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE
+    help
+      This option adds the workaround for ARM Cortex-A710 erratum 
2119858.
+
+      Affected Cortex-A710 cores could overwrite upto 3 cache lines 
of trace

                                                  up to

quoted

+      data at the base of the buffer (ponited by TRBASER_EL1) in FILL 
mode in

                                       pointed to by

quoted

+      the event of a WRAP event.
+
+      Work around the issue by always making sure we move the 
TRBPTR_EL1 by
+      256bytes before enabling the buffer and filling the first 
256bytes of

       256 bytes                                                 256 bytes

quoted

+      the buffer with ETM ignore packets upon disabling.
+
+      If unsure, say Y.
+
+config ARM64_ERRATUM_2139208
+    bool "Neoverse-N2: 2139208: workaround TRBE overwriting trace 
data in FILL mode"
+    default y
+    depends on COMPILE_TEST # Until the CoreSight TRBE driver changes 
are in
+    depends on CORESIGHT_TRBE
+    select ARM64_WORKAROUND_TRBE_OVERWRITE_FILL_MODE
+    help
+      This option adds the workaround for ARM Neoverse-N2 erratum 
2139208.
+
+      Affected Neoverse-N2 cores could overwrite upto 3 cache lines 
of trace

                                                  up to

quoted

+      data at the base of the buffer (ponited by TRBASER_EL1) in FILL 
mode in

                                       pointed to by

quoted

+      the event of a WRAP event.
+
+      Work around the issue by always making sure we move the 
TRBPTR_EL1 by
+      256bytes before enabling the buffer and filling the first 
256bytes of

       256 bytes                                                 256 bytes

quoted

+      the buffer with ETM ignore packets upon disabling.
+
+      If unsure, say Y.

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