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. 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
