On 05/24/2013 12:59 PM, Bryce Lelbach wrote:
The attached patch affects pbus_size_mem() in drivers/pci/setup-bus.c. The patch increases the maximum memory window size for a PCI bus from 2 Gb to 2^63 Gb. This change is necessary to support Intel Xeon Phi co-processors. These co-processors are PCIe devices used for high-performance computing applications. The device requires an 8Gb memory window to function (the co-processor has 8Gb of onboard memory). This patch is a modified version of a patch from Intel's MPSS framework (specifically, from the "KNC_gold_update_1-2.1.4982-15-rhel-6.3" package), which will apply to a 3.7.8 kernel (I am about to try it on a 3.8 kernel). To the best of my knowledge, newer RHEL kernels are shipped with this patch.
This patch is not in (the latest) RHEL6(.4) or the internal staging tree for the next RHEL6(.5) release. -- 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
