[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 23.09.13 at 16:50, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx> wrote: > 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. That last patch in the series does just that. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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