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6560edca51
With the addition of ARMv8.3-FPAC feature, the probe of authenticate ptrauth instructions (AUT*) may cause ptrauth fault exception in case of authenticate failure so they cannot be safely single stepped. Hence the probe of authenticate instructions is disallowed but the corresponding pac ptrauth instruction (PAC*) is not affected and they can still be probed. Also AUTH* instructions do not make sense at function entry points so most realistic probes would be unaffected by this change. Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com> Reviewed-by: Dave Martin <dave.martin@arm.com> Link: https://lore.kernel.org/r/20200914083656.21428-6-amit.kachhap@arm.com Signed-off-by: Will Deacon <will@kernel.org> |
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