arm64/boot: Don't set PMUv3p9 FGT2 bits without PMUv3

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On a CPU with FGT2 and an IMPLEMENTATION DEFINED PMU (PMUVer 0b1111),
__init_el2_fgt2 sets the PMUv3p9 bits in HDFGRTR2_EL2 and HDFGWTR2_EL2,
which are RES0 there. The macro only checks that PMUVer is at least
PMUv3p9, and 0b1111 passes.

Exclude 0b1111 before the compare, as __init_el2_debug does.

Fixes: 858c7bfcb3 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9")
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Bradley Morgan <brads@mainlining.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Fuad Tabba 2026-09-30 13:12:12 +01:00 • committed by Will Deacon

parent e060d9069b

commit b52ef45013

1 changed files with 3 additions and 2 deletions

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arch/arm64/include/asm/el2_setup.h

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