On 02/25/2014 12:59 AM, Marcelo Tosatti wrote: > > Read-only large sptes can be created due to read-only faults as > follows: > > - QEMU pagetable entry that maps guest memory is read-only > due to COW. > - Guest read faults such memory, COW is not broken, because > it is a read-only fault. > - Enable dirty logging, large spte not nuked because it is read-only. > - Write-fault on such memory causes guest to loop endlessly > (which must go down to level 1 because dirty logging is enabled).
Hi Marcelo, It surprised me that the large-readonly mapping was not dropped by mmu-notifer as this is write fault on readonly mapping in Qemu. Hmm... i missed something? -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
