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arm64: probes: Handle probes on hinted conditional branch instructions

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BC.cond instructions introduced by FEAT_HBC cannot be executed
out-of-line, like other branch instructions. However, they can be
simulated in the same way as B.cond instructions.

Extend the B.cond decoder mask to match BC.cond instructions as well,
and handle them using the existing B.cond simulation path.

Fixes: 7f86d128e4 ("arm64: add HWCAP for FEAT_HBC (hinted conditional branches)")
Cc: <stable@vger.kernel.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Vladimir Murzin 2026-05-15 14:37:29 +01:00 committed by Catalin Marinas
parent 6ccbb613b4
commit 2ccd8ff980
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/include/asm/insn.h
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@ -409,7 +409,7 @@ __AARCH64_INSN_FUNCS(cbz, 0x7F000000, 0x34000000)
__AARCH64_INSN_FUNCS(cbnz, 0x7F000000, 0x35000000)
__AARCH64_INSN_FUNCS(tbz, 0x7F000000, 0x36000000)
__AARCH64_INSN_FUNCS(tbnz, 0x7F000000, 0x37000000)
__AARCH64_INSN_FUNCS(bcond, 0xFF000010, 0x54000000)
__AARCH64_INSN_FUNCS(bcond, 0xFF000000, 0x54000000)
__AARCH64_INSN_FUNCS(svc, 0xFFE0001F, 0xD4000001)
__AARCH64_INSN_FUNCS(hvc, 0xFFE0001F, 0xD4000002)
__AARCH64_INSN_FUNCS(smc, 0xFFE0001F, 0xD4000003)