Chris Lalancette wrote: > Chris Lalancette wrote: > >> Attached is a patch that fixes a guest crash when booting older Linux >> kernels. >> The problem stems from the fact that we are currently emulating >> MSR_K7_EVNTSEL[0-3], but not emulating MSR_K7_PERFCTR[0-3]. Because of this, >> setup_k7_watchdog() in the Linux kernel receives a GPF when it attempts to >> write >> into MSR_K7_PERFCTR, which causes an OOPs. >> >> The patch fixes it by just "fake" emulating the appropriate MSRs, throwing >> away >> the data in the process. This causes the NMI watchdog to not actually work, >> but >> it's not such a big deal in a virtualized environment. >> >> Tested by myself on a RHEL-4 guest, and Joerg Roedel on a Windows XP 64-bit >> guest. >> > > Avi, > Do you mind applying this patch for me (unless you see something wrong > with > it, of course)? > >
Sorry, was behind on my email. Please add a ratelimited printk() if nonzero data is written, so that we know that the guest is using partially virtualized features. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
