2017-07-28 16:24 GMT+08:00 Mike Galbraith <efault@xxxxxx>: > On Fri, 2017-07-28 at 09:03 +0200, Paolo Bonzini wrote: >> With these two patches, KVM does not blindly pass the exit interruption >> info and exit qualification from the vmcs02 and vmcs12 when injecting >> an exception. There were two spots where this was done, namely >> nested_vmx_check_exception and vmx_inject_page_fault_nested. >> >> Patch 1 avoids writing the vmcs02's VM_EXIT_INTR_ERROR_CODE field, >> which as Jim noticed isn't possible on pre-Haswell machines, but >> otherwise has no semantic effect. >> >> Patch 2 is the actual bugfix. > > I was looking into oodles of lapic_timer.hv_timer_in_use warnings in > RT, introduced by KVM: LAPIC: Fix lapic timer injection delay, when I > noticed this post. Happily, I can report that they are history. Yeah, it is fixed in the kvm/queue. https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?h=queue&id=1d518c6820daf4e00d29adfba980aee05f605f0f Regards, Wanpeng Li
