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Blackfin: work around anomaly 05000189
Similar to anomaly 05000281 but not as bad, we cannot return to the instruction causing a fault otherwise we'll trigger a second false exception. The system can still recover, but it isn't correct. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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1 changed files with 2 additions and 1 deletions
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@ -621,7 +621,8 @@ asmlinkage void trap_c(struct pt_regs *fp)
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}
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if ((ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) ||
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(ANOMALY_05000281 && trapnr == VEC_HWERR))
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(ANOMALY_05000281 && trapnr == VEC_HWERR) ||
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(ANOMALY_05000189 && (trapnr == VEC_CPLB_I_VL || trapnr == VEC_CPLB_VL)))
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fp->pc = SAFE_USER_INSTRUCTION;
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traps_done:
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