[PATCH 02/13] Nested Virtualization: data structure

[Christoph Egger <Christoph.Egger@amd.com>]

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-- 
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

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# HG changeset patch
# User cegger
# Date 1289574148 -3600
Data structures for Nested Virtualization

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

diff -r de4c5c587cb9 -r 0ffc80ffc6c5 xen/include/asm-x86/hvm/hvm.h
--- a/xen/include/asm-x86/hvm/hvm.h
+++ b/xen/include/asm-x86/hvm/hvm.h
@@ -52,7 +52,8 @@ enum hvm_intblk {
     hvm_intblk_shadow,    /* MOV-SS or STI shadow */
     hvm_intblk_rflags_ie, /* RFLAGS.IE == 0 */
     hvm_intblk_tpr,       /* LAPIC TPR too high */
-    hvm_intblk_nmi_iret   /* NMI blocked until IRET */
+    hvm_intblk_nmi_iret,  /* NMI blocked until IRET */
+    hvm_intblk_arch,      /* SVM/VMX specific reason */
 };
 
 /* These happen to be the same as the VMX interrupt shadow definitions. */
diff -r de4c5c587cb9 -r 0ffc80ffc6c5 xen/include/asm-x86/hvm/vcpu.h
--- a/xen/include/asm-x86/hvm/vcpu.h
+++ b/xen/include/asm-x86/hvm/vcpu.h
@@ -36,6 +36,33 @@ enum hvm_io_state {
     HVMIO_completed
 };
 
+struct nestedvcpu {
+    bool_t nv_guestmode; /* vcpu in guestmode? */
+    void *nv_vmcx; /* l1 guest virtual VMCB/VMCS */
+
+    /* address of l1 guest virtual VMCB/VMCS, needed for VMEXIT */
+    uint64_t nv_vmcxaddr;
+
+    /* SVM/VMX arch specific */
+    union {
+    } u;
+
+    bool_t nv_flushp2m; /* True, when p2m table must be flushed */
+    struct p2m_domain *nv_p2m; /* used p2m table for this vcpu */
+
+    union {
+        uint32_t bytes;
+        struct {
+            uint32_t vmentry_pending: 1;
+            uint32_t vmexit_pending: 1;
+            uint32_t vmswitch_in_progress: 1; /* true during vmentry/vmexit emulation */
+            uint32_t reserved : 29;
+        } fields;
+    } nv_hostflags;
+};
+
+#define vcpu_nestedhvm(v) ((v)->arch.hvm_vcpu.nvcpu)
+
 struct hvm_vcpu {
     /* Guest control-register and EFER values, just as the guest sees them. */
     unsigned long       guest_cr[5];
@@ -78,6 +105,8 @@ struct hvm_vcpu {
 
     struct tasklet      assert_evtchn_irq_tasklet;
 
+    struct nestedvcpu   nvcpu;
+
     struct mtrr_state   mtrr;
     u64                 pat_cr;
 

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