Messages in this thread | | | Date | Sat, 03 Jun 2006 19:43:43 -0400 | From | Brice Goglin <> | Subject | Re: [RFC]disable msi mode in pci_disable_device |
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Linas Vepstas wrote: >> The aim is to be able to recover from a memory parity error in the NIC. >> Such errors happen sometimes, especially when a cosmic ray comes by. To >> recover, we restore the state that we saved at the end of the >> initialization. As saving currently disables MSI, we currently have to >> restore the state right after saving it at the end of the initialization >> (see the end of >> myri10ge_probe in http://lkml.org/lkml/2006/5/23/24). >> > > My experience dealing with a similar thing suggests that its usually > easier to restore the state to where it was after a cold boot, but > before the device driver touched the h/w. >
After a cold boot, some initialization is done by Linux before the driver even touches the device (for instance the BARs). I am not sure that restoring to the state before Linux initialized the device would be easier than what we currently do.
Brice
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