[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] xc_tbuf_set_cpu_mask & xentrace & cpu_mask
Hey George, I recently got my hands on a machine with 240CPUS (ugh!) and wanted to play a bit on figuring out what is happening with certain guests if I partition it the box in nice per-socket pools. While I was setting this up I started looking at xentrace and figuring out what to set the cpu_mask and then I realized it is limited to 64 cpus. Or at least that is my understanding (with not enough sleep - maybe I am missing something?). I see this xc_tbuf_set_cpu_mask which accepts a 32-bit mask and in the code I see: sysctl.u.tbuf_op.cpu_mask.nr_bits = sizeof(bytemap) * 8; where bytemap is a uint8. That all reads to me as a 64-bit mask (thought we only pass in a 32-bit mask?). Seems like two bugs there. The hypervisor part is OK - it does the right thing. Am I reading the code right? And if so, do you have some patches in your backlog that had addressed this by any chance? Thanks. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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