On 05/18/2012 12:51 AM, Greg KH wrote: > On Thu, May 17, 2012 at 01:04:30PM -0400, Prarit Bhargava wrote: >> Consider the following case >> >> [ RP ] >> | >> | >> +---------+-----------+ >> | | | >> [H1] [H2] [X1] >> >> where RP is a PCIE Root Port, H1 and H2 are devices with drivers that support >> PCIE AER driver error handling (ie, they have pci_error_handlers defined in >> the driver), and X1 is a device with a driver that does not support PCIE >> AER driver error handling. >> >> If the Root Port takes an error what currently happens is that the >> bus resets and H1 & H2 call their slot_reset functions. X1 does nothing. >> >> In some cases a user may not wish the system to continue because X1 is >> an unhardened driver. In these cases, the system should not do a bus reset, >> but rather the system should panic to avoid any further possible data >> corruption. >> >> This patch implements an AER_panic sysfs entry for each root port which >> a user can modify. AER_panic = 1, means the system will panic on a >> PCIE error which would have normally resulted in a secondary bus reset. > > If you add/modify/delete a sysfs file, you have to also have a > corrisponding patch to Documentation/ABI/ in order to keep things sane. > Please do that as part of this patch the next time you submit it. Sorry about that Greg. I'll submit a [v2] with that modification. P. > > thanks, > > greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
