1 files changed, 9 insertions, 0 deletions
diff --git a/xen/include/asm-x86/hvm/vcpu.h b/xen/include/asm-x86/hvm/vcpu.h
index 0c76551575..d3281d20dc 100644
--- a/xen/include/asm-x86/hvm/vcpu.h
+++ b/xen/include/asm-x86/hvm/vcpu.h
@@ -80,6 +80,15 @@ struct hvm_vcpu {
     /* I/O request in flight to device model. */
     enum hvm_io_state   io_state;
     unsigned long       io_data;
+
+    /*
+     * HVM emulation:
+     *  Virtual address @mmio_gva maps to MMIO physical frame @mmio_gpfn.
+     *  The latter is known to be an MMIO frame (not RAM).
+     *  This translation is only valid if @mmio_gva is non-zero.
+     */
+    unsigned long       mmio_gva;
+    unsigned long       mmio_gpfn;
 };
 
 #endif /* __ASM_X86_HVM_VCPU_H__ */