]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list
authorRyan Roberts <ryan.roberts@arm.com>
Fri, 19 Sep 2025 14:58:30 +0000 (15:58 +0100)
committerWill Deacon <will@kernel.org>
Mon, 22 Sep 2025 10:27:14 +0000 (11:27 +0100)
commit8fca3852e33d762b8d8beed5458c99ffb7fd5975
treeb9940d2f6ce8af768615e3944dc1810d8b29460c
parent0c33aa1804d101c11ba1992504f17a42233f0e11
arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list

Neoverse-V3AE advertises support for BBML2 and is known to not raise
conflict aborts. So add it to the BBML2_NOABORT allow list.

However, just like Neoverse-V3, Neoverse-V3AE r0p0 and r0p1 suffer from
erratum #3053180, for which the workaround is to always observe
break-before-make requirements for affected revisions. Therefore only
add to the allow list from r0p2 onwards.

For more details see Software Developer Errata Notice (SDEN) document:
    Neoverse V3AE (MP172) SDEN v9.0, erratum 3053180
    https://developer.arm.com/documentation/SDEN-2615521/9-0/

Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
arch/arm64/kernel/cpufeature.c