kvm: fix wrong address when writing Hyper-V tsc page
When kvm_write_guest writes the tsc_ref structure to the guest, or it will lead the low HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT bits of the TSC page address must be cleared, or the guest can see a non-zero sequence number. Otherwise Windows guests would not be able to get a correct clocksource (QueryPerformanceCounter will always return 0) which causes serious chaos. Signed-off-by: NXiaoming Gao <newtongao@tencnet.com> Cc: stable@vger.kernel.org Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Showing
想要评论请 注册 或 登录