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arm64: Add support for TSV110 Spectre-BHB mitigation

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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 <yangjinqian1@huawei.com>
Reviewed-by: Zenghui Yu <zenghui.yu@linux.dev>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jinqian Yang
2025-12-27 17:24:48 +08:00
committed by Will Deacon
parent 8f0b4cce44
commit e3baa5d4b3
1 changed files with 1 additions and 0 deletions
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1
arch/arm64/kernel/proton-pack.c
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@@ -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[] = {