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arm64: Expose ESR_EL1 information to user when SIGSEGV/SIGBUS
This information is useful for instruction emulators to detect read/write and access size without having to decode the faulting instruction. The current patch exports it via sigcontext (struct esr_context) and is only valid for SIGSEGV and SIGBUS. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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