KVM handles monitor-mwait as nop, but does not check any of the preconditions for the instructions. These instructions may generate all kind of exceptions (#UD, #PF, #GP, #SS). They can also be executed in real-mode. This patch-set moves the handling of monitor-mwait to the emulator, to allow their execution in either real-mode or protected-mode. It tries to follow the SDM in checking the preconditions and generating the necassary exceptions.
Thanks for reviewing the patch. Please try it with OS X to make sure it works properly without generating unnecassary exception. Nadav Amit (3): KVM: x86: Emulator flag for instruction with no big real mode KVM: x86: Emulator support for #UD on CPL>0 KVM: x86: correct mwait and monitor emulation arch/x86/kvm/emulate.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++---- arch/x86/kvm/svm.c | 22 ++------------------ arch/x86/kvm/vmx.c | 27 ++++++++++--------------- 3 files changed, 64 insertions(+), 40 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
