File 57c4412b-x86-HVM-add-guarding-logic-for-VMX-specific-code.patch of Package xen

# Commit 81caac0cd0f56b0052a7884e6bd99e3a652ddd59
# Date 2016-08-29 16:05:31 +0200
# Author Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
# Committer Jan Beulich <jbeulich@suse.com>
x86/HVM: add guarding logic for VMX specific code

The struct hvm_domain.vmx is defined in a union along with the svm.
This can causes issue for SVM since this code is used in the common
scheduling code for x86. The logic must check for cpu_has_vmx before
accessing the hvm_domain.vmx sturcture.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/include/asm-x86/hvm/hvm.h
+++ b/xen/include/asm-x86/hvm/hvm.h
@@ -611,7 +611,7 @@ unsigned long hvm_cr4_guest_reserved_bit
     struct vcpu *v_ = (v);                                      \
     struct domain *d_ = v_->domain;                             \
     if ( has_hvm_container_domain(d_) &&                        \
-         d_->arch.hvm_domain.vmx.vcpu_block )                   \
+         (cpu_has_vmx && d_->arch.hvm_domain.vmx.vcpu_block) )  \
         d_->arch.hvm_domain.vmx.vcpu_block(v_);                 \
 })