arm64: errata: Expand speculative SSBS workaround for Cortex-A720AE

JIRA: https://issues.redhat.com/browse/RHEL-119900

commit 3ba8d4a
Author: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date:   Thu, 18 Sep 2025 06:27:12 +0000

    arm64: errata: Expand speculative SSBS workaround for Cortex-A720AE

    It is same as Cortex-A720.

    Link: https://lore.kernel.org/all/aMlFwbDjJ6yKuxTv@J2N7QTR9R3.cambridge.arm.com/
    Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
    Signed-off-by: Will Deacon <will@kernel.org>

Signed-off-by: Waiman Long <longman@redhat.com>

Author: Waiman-Long

arch/arm64/kernel/cpu_errata.c

@@ -441,6 +441,7 @@ static const struct midr_range erratum_spec_ssbs_list[] = {
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A710),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A715),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A720),
+	MIDR_ALL_VERSIONS(MIDR_CORTEX_A720AE),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_A725),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_X1),
 	MIDR_ALL_VERSIONS(MIDR_CORTEX_X1C),

arch/arm64/kernel/proton-pack.c

@@ -884,6 +884,7 @@ static u8 spectre_bhb_loop_affected(void)
 	static const struct midr_range spectre_bhb_k38_list[] = {
 		MIDR_ALL_VERSIONS(MIDR_CORTEX_A715),
 		MIDR_ALL_VERSIONS(MIDR_CORTEX_A720),
+		MIDR_ALL_VERSIONS(MIDR_CORTEX_A720AE),
 		{},
 	};
 	static const struct midr_range spectre_bhb_k32_list[] = {