arm64: Subscribe Microsoft Azure Cobalt 100 to erratum 3194386

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@arm.com>
CC: James More <james.morse@arm.com>
CC: Will Deacon <will@kernel.org>
CC: stable@vger.kernel.org # 6.6+
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Link: https://lore.kernel.org/r/20241003225239.321774-1-eahariha@linux.microsoft.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/Documentation/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst
index ae45a409f76fb91623c9e55fc628f20ebe0ed7ac..65bfab1b1861467358d201619018b1a327de4ad8 100644 (file)
--- a/Documentation/arch/arm64/silicon-errata.rst
+++ b/Documentation/arch/arm64/silicon-errata.rst
@@ -293,3 +293,5 @@ 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 d9b9ec2bd6ff41d76613483a83dc67106cd584f9..a78f247029aec3be4e7dfdc31f9a0d3c4346f49f 100644 (file)
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -448,6 +448,7 @@ 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),