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diagnostic. It's not indicative of an error condition. The code sequence in question calls fpusave_proc(), which ultimately calls alpha_pal_wrfen(0), which clears the FEN bit in the current PCB. However, the diagnostic message is based on reading that bit from the PCB representation in memory, which is not guaranteed to be kept up-to-date with respect to the real PCB contents. According to the AARM, third edition, II-B 4.2: "If the PCB is read while ownership resides with the processor, it is UNPREDICTABLE whether the original or an updated value of a field is read." The Alpha architecture does not provide a way to read the true value of the FEN bit of the current PCB, so the test is simply removed. |
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| common | ||
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| eisa | ||
| include | ||
| isa | ||
| jensenio | ||
| mcbus | ||
| pci | ||
| sableio | ||
| stand | ||
| tc | ||
| tlsb | ||
| Makefile | ||
| STYLE | ||