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My recent commite5d00aaac6("selftests/powerpc: Check all FPRs in fpu_preempt") inadvertently broke the fpu_signal test. It needs to take into account that fpu_preempt now loads 32 FPRs, so enlarge darray. Also use the newly added randomise_darray() to properly randomise darray. Finally the checking done in signal_fpu_sig() needs to skip checking f30/f31, because they are used as scratch registers in check_all_fprs(), called by preempt_fpu(), and so could hold other values when the signal is taken. Fixes:e5d00aaac6("selftests/powerpc: Check all FPRs in fpu_preempt") Reported-by: Spoorthy <spoorthy@linux.ibm.com> Depends-on:2ba107f679("selftests/powerpc: Generate better bit patterns for FPU tests") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240301101035.1230024-1-mpe@ellerman.id.au