[PATCH 6.6 3/3] arm64: Subscribe Microsoft Azure Cobalt 100 to erratum 3194386

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From: Easwar Hariharan <eahariha@xxxxxxxxxxxxxxxxxxx>

[ Upstream commit 3eddb108abe3de6723cc4b77e8558ce1b3047987 ]

Add the Microsoft Azure Cobalt 100 CPU to the list of CPUs suffering
from erratum 3194386 added in commit 75b3c43eab59 ("arm64: errata:
Expand speculative SSBS workaround")

CC: Mark Rutland <mark.rutland@xxxxxxx>
CC: James More <james.morse@xxxxxxx>
CC: Will Deacon <will@xxxxxxxxxx>
CC: stable@xxxxxxxxxxxxxxx # 6.6+
Signed-off-by: Easwar Hariharan <eahariha@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20241003225239.321774-1-eahariha@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
[ Mark: trivial backport ]
Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx>
---
 Documentation/arch/arm64/silicon-errata.rst | 2 ++
 arch/arm64/kernel/cpu_errata.c              | 1 +
 2 files changed, 3 insertions(+)

diff --git a/Documentation/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst
index e3276b62afb0c..3cf806733083c 100644
--- a/Documentation/arch/arm64/silicon-errata.rst
+++ b/Documentation/arch/arm64/silicon-errata.rst
@@ -284,3 +284,5 @@ stable kernels.
 +----------------+-----------------+-----------------+-----------------------------+
 | Microsoft      | Azure Cobalt 100| #2253138        | ARM64_ERRATUM_2253138       |
 +----------------+-----------------+-----------------+-----------------------------+
+| Microsoft      | Azure Cobalt 100| #3324339        | ARM64_ERRATUM_3194386       |
++----------------+-----------------+-----------------+-----------------------------+
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index a5ab4bac1d9b9..463b48d0f9250 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -464,6 +464,7 @@ static const struct midr_range erratum_spec_ssbs_list[] = {
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_X3),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_X4),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_X925),
+	MIDR_ALL_VERSIONS(MIDR_MICROSOFT_AZURE_COBALT_100),
 	MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
 	MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2),
 	MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N3),
-- 
2.30.2





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