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arm64: Add support for HIP09 Spectre-BHB mitigation
authorJinqian Yang <yangjinqian1@huawei.com>
Tue, 25 Mar 2025 14:19:00 +0000 (22:19 +0800)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 28 Mar 2025 19:26:29 +0000 (19:26 +0000)
commite18c09b204e81702ea63b9f1a81ab003b72e3174
tree68ae1e7c73ef57ec7e0c110f1d6b3c21739367bbtree
parent0fff2aa96f6be6d33b584d73b16d3672fd30fd5ccommit | diff
arm64: Add support for HIP09 Spectre-BHB mitigation

The HIP09 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 HIP09
to the list for software mitigation.

Signed-off-by: Jinqian Yang <yangjinqian1@huawei.com>
Link: https://lore.kernel.org/r/20250325141900.2057314-1-yangjinqian1@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/cputype.h diff | blob | history
arch/arm64/kernel/proton-pack.c diff | blob | history
XArray, radix tree and IDR