On 0, Nadav Har'El <nyh@xxxxxxxxxx> wrote: > The following are patches I propose for fixing the bug discovered by Bandan > Das and discussed in the "Nested VMX - L1 hangs on running L2" thread. > > The first patch should fix the originally-reported bug, as explained in the > aforementioned thread: A new x86_op read_l1_tsc() is called L1's TSC is > needed, instead of assuming that calling kvm_read_msr() will do that > (because this has to return L2's TSC when a nested guest is running). > > The second and third patches fix relatively-unimportant corner cases in > nested VMX and nested SVM TSC handling. > > I'd appreciate it if the people who noticed this bug can verify that these > patches indeed solve it for them. I can verify that these patches work for me. Thanks Nadav and others for looking into this! I have cc'ed Jan and Matt in case they would be interested in trying out these patches. > Patch statistics: > ----------------- > > arch/x86/include/asm/kvm_host.h | 2 + > arch/x86/kvm/svm.c | 13 ++++++-- > arch/x86/kvm/vmx.c | 48 +++++++++++++++++++++++------- > arch/x86/kvm/x86.c | 8 ++--- > 4 files changed, 54 insertions(+), 17 deletions(-) > > -- > Nadav Har'El > IBM Haifa Research Lab -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
