[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH 0/3] xen: Fix oops when mapping/unmapping addr above 1Gb
Mark McLoughlin wrote: Hi, In Fedora rawhide we're currently seeing oopses whenever a processes dlopen()s a library which prelink() has previously relocated above 1Gb. Some more details at: https://bugzilla.redhat.com/436453 The issue seems to be that during xen_pgd_pin(), we only pin PTE pages, but xen's release_pmd() tries to unpin PMD pages too. The following series of patches is against the latest x86 tree. Hm, OK. I'm trying to work out what happened here. I guess its a latent bug which is only visible now that its possible to incrementally free pmds. A side note is that I'm planning on pinning pmds in the future, so that we can get away replace the full pgd page per mm with a pgd page per cpu. J _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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