Marcelo Tosatti wrote: > Zdenek reported a bug where a looping "dmsetup status" eventually hangs > on SMP guests. > > The problem is that kvm_mmu_get_page() prepopulates the shadow MMU > before write protecting the guest page tables. By doing so, it leaves a > window open where the guest can mark a pte as present while the host has > shadow cached such pte as "notrap". Accesses to such address will fault > in the guest without the host having a chance to fix the situation. >
Applied, thanks. Impressive catch. -- Any sufficiently difficult bug is indistinguishable from a feature. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
