From fd51d47fcacec3ca027eb65d8c44853d3b6cea95 Mon Sep 17 00:00:00 2001 From: Jinqian Yang Date: Sat, 27 Dec 2025 17:24:48 +0800 Subject: [PATCH] arm64: Add support for TSV110 Spectre-BHB mitigation [ Upstream commit e3baa5d4b361276efeb87b20d8beced451a7dbd5 ] The TSV110 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This commit adds the MIDR of TSV110 to the list for software mitigation. Signed-off-by: Jinqian Yang Reviewed-by: Zenghui Yu Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/kernel/proton-pack.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index 80a580e019c5..b3801f532b10 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -887,6 +887,7 @@ static u8 spectre_bhb_loop_affected(void) MIDR_ALL_VERSIONS(MIDR_CORTEX_X2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N2), MIDR_ALL_VERSIONS(MIDR_NEOVERSE_V1), + MIDR_ALL_VERSIONS(MIDR_HISI_TSV110), {}, }; static const struct midr_range spectre_bhb_k24_list[] = {