arm64: Add part number for Arm Cortex-A78AE

Add the MIDR part number info for the Arm Cortex-A78AE[1] and add it to
spectre-BHB affected list[2].

[1]: https://developer.arm.com/Processors/Cortex-A78AE
[2]: https://developer.arm.com/Arm%20Security%20Center/Spectre-BHB

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220407091128.8700-1-chanho61.park@samsung.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
index 232b439cbaf3d8511199fa69399ce27d47c336c6..ff8f4511df71f73d671bbb57449e57ed94f3e7d9 100644 (file)
--- a/arch/arm64/include/asm/cputype.h
+++ b/arch/arm64/include/asm/cputype.h
@@ -75,6 +75,7 @@
 #define ARM_CPU_PART_CORTEX_A77                0xD0D
 #define ARM_CPU_PART_NEOVERSE_V1       0xD40
 #define ARM_CPU_PART_CORTEX_A78                0xD41
+#define ARM_CPU_PART_CORTEX_A78AE      0xD42
 #define ARM_CPU_PART_CORTEX_X1         0xD44
 #define ARM_CPU_PART_CORTEX_A510       0xD46
 #define ARM_CPU_PART_CORTEX_A710       0xD47
@@ -130,6 +131,7 @@
 #define MIDR_CORTEX_A77        MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A77)
 #define MIDR_NEOVERSE_V1       MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_NEOVERSE_V1)
 #define MIDR_CORTEX_A78        MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78)
+#define MIDR_CORTEX_A78AE      MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78AE)
 #define MIDR_CORTEX_X1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X1)
 #define MIDR_CORTEX_A510 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A510)
 #define MIDR_CORTEX_A710 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A710)

diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
index 5777929d35bf47664ec9f8efd6598fb9bb17cf7e..40be3a7c2c53154a17be367d56badf57b9e1c48a 100644 (file)
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -853,6 +853,7 @@ u8 spectre_bhb_loop_affected(int scope)
        if (scope == SCOPE_LOCAL_CPU) {
                static const struct midr_range spectre_bhb_k32_list[] = {
                        MIDR_ALL_VERSIONS(MIDR_CORTEX_A78),
+                       MIDR_ALL_VERSIONS(MIDR_CORTEX_A78AE),
                        MIDR_ALL_VERSIONS(MIDR_CORTEX_A78C),
                        MIDR_ALL_VERSIONS(MIDR_CORTEX_X1),
                        MIDR_ALL_VERSIONS(MIDR_CORTEX_A710),