[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 1/4] Nested VMX: check VMX capability before read VMX related MSRs
On 09/23/2013 06:10 AM, Jan Beulich wrote: --- a/xen/arch/x86/hvm/vmx/vvmx.c +++ b/xen/arch/x86/hvm/vmx/vvmx.c @@ -1813,12 +1813,33 @@ int nvmx_handle_invvpid(struct cpu_user_ int nvmx_msr_read_intercept(unsigned int msr, u64 *msr_content) { struct vcpu *v = current; + unsigned int ecx, dummy; u64 data = 0, host_data = 0; int r = 1;if ( !nestedhvm_enabled(v->domain) )return 0;+ /* VMX capablity MSRs are available only when guest supports VMX. */+ hvm_cpuid(0x1, &dummy, &dummy, &ecx, &dummy); Depending on order in which you are going to commit patches you could change hvm_cpuid() dummy arguments to NULLs to make use of your "make hvm_cpuid() ..." patch. In [3/4] as well. -boris _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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