arm64: Subscribe Microsoft Azure Cobalt 100 to erratum 3194386

commit 3eddb10 upstream.

Add the Microsoft Azure Cobalt 100 CPU to the list of CPUs suffering
from erratum 3194386 added in commit 75b3c43 ("arm64: errata:
Expand speculative SSBS workaround")

CC: Mark Rutland <[email protected]>
CC: James More <[email protected]>
CC: Will Deacon <[email protected]>
CC: [email protected] # 6.6+
Signed-off-by: Easwar Hariharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: easwarh

Documentation/arch/arm64/silicon-errata.rst

@@ -280,3 +280,5 @@ stable kernels.
 +----------------+-----------------+-----------------+-----------------------------+
 | Microsoft      | Azure Cobalt 100| #2253138        | ARM64_ERRATUM_2253138       |
 +----------------+-----------------+-----------------+-----------------------------+
+| Microsoft      | Azure Cobalt 100| #3324339        | ARM64_ERRATUM_3194386       |
++----------------+-----------------+-----------------+-----------------------------+

arch/arm64/kernel/cpu_errata.c

@@ -463,6 +463,7 @@ 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_V1),