Messages in this thread | | | Date | Fri, 9 May 1997 17:56:57 +0200 (MET DST) | From | Riccardo Facchetti <> | Subject | Re: [PATCH] NMI trap revised (was Re: NMI errors in 2.0.30??) |
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On Fri, 9 May 1997, Martin Mares wrote:
> > > > The kernel should _not_ enable these bits as it would break lots of systems > > > having non-parity memory. > > > > How? > > This would probably enable the parity checks there causing approx. half of all > memory accesses to cause NMI. > > Conclusion: We should not enable these bits explicitly and we should honor > the information in bits 6 and 7 only if the corresponding NMI sources are set > in bits 2 and 3 (they are hopefully readable on all MB's since the XT).
Of course. But assuming that when we find an NMI caused by bit 2 and/or bit 3, we can safely think that the bit(s) was not set in the BIOS (so enabling these NMI checks) and we can toggle them.
Ciao, Riccardo.
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