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PAuth adds sign/verify controls to enable and disable groups of instructions in hardware for compatibility with libraries that do not implement PAuth. The kernel always enables them if it detects PAuth. Add a test that checks that each group of instructions is enabled, if the kernel reports PAuth as detected. Note: For groups, for the purpose of this patch, we intend instructions that use a certain key. Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com> Reviewed-by: Vincenzo Frascino <Vincenzo.Frascino@arm.com> Reviewed-by: Amit Daniel Kachhap <amit.kachhap@arm.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20200918104715.182310-3-boian4o1@gmail.com Signed-off-by: Will Deacon <will@kernel.org> |
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