hi, I am having a strange problem here, where exactly half my XenLinux PFNs are recorded as INVALID_P2M_ENTRY in phys_to_machine_mapping. This is with xen 3.0.3, and only happens on some of my machines, all 2GHz P4''s with 512 megs of memory, 64 of which are given to dom0. The lupper half of the phys_to_machine array is filled with 0xFFFFFFFF entries, but a check for this input value in set_phys_to_machine() never logs any invalid entries written through that function. The VM uses the network quite heavily, so I was thinking that the problem could be due to improper recovery of incoming netfront pages. The problem seems to occur with both flipping and copying receiver. On another machine, an Intel(R) Core(TM)2 CPU, with more, memory, and the exact same binaries for xen, vmlinux0 and vmlinuxU, the problem never occurs. Has anyone seen problem before? Jacob _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Jacob Gorm Hansen
2007-Apr-28 09:14 UTC
Re: [Xen-devel] Who sets my p2m entries to INVALID?
On Fri, 2007-04-27 at 17:17 +0200, Jacob Gorm Hansen wrote:> hi, > > I am having a strange problem here, where exactly half my XenLinux PFNs > are recorded as INVALID_P2M_ENTRY in phys_to_machine_mapping. This is > with xen 3.0.3, and only happens on some of my machines, all 2GHz P4''s > with 512 megs of memory, 64 of which are given to dom0.Never mind, it was caused by an inconsistency between the number of pfns reserved by my domain builder, and the mem= linux cmdline setting, resulting in the p2m map never getting fully populated. Jacob _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel