On 23/11/2017 04:18, gengdongjiu wrote: > Hi ying/guangrong, sorry to disturb you, I have a question to consult > with you. For the x86 RAS, if guest OS happen machine check > exceptions(MCEs) in page table, such as guest application's page > table, what is the behavior for it? For normal data RAS error, host > will deliver SIGBUS to Qemu, and Qemu will inject MCE to guest. but > if the page table happen RAS error, host should not deliver SIGBUS, The host will deliver SIGBUS even in this case; the host doesn't know what the page is used for. If the MCE happens on the *host* page tables, I think QEMU will be killed. Paolo > then guest will not know it happen error, for this case, what is the > behavior for KVM, terminate the VM? I do not find the handling > logic. Thanks! look forward your to reply. > >
