On Fri, May 24, 2013 at 10:59 AM, Bryce Lelbach <blelbach@xxxxxxxxxxx> 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 needs a Signed-off-by before it can be applied (see Documentation/SubmittingPatches for details about what this means). Also, there's some confusion about this being in RHEL. I take it that it is not actually in RHEL, but perhaps in an Intel-supplied update that is commonly applied on top of RHEL? IIRC, a very similar patch was posted last year. It'd be nice to dig that up and credit that author as well. It's more convenient for me to receive patches as plain-text email (not attachments), also as described in SubmittingPatches. I *can* deal with attachments, but it's a hassle and I tend to keep putting them off ;) Bjorn -- 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
