[RFC PATCH v6 28/43] altp2m: Move altp2m_vcpu_{initialise,destroy} to common code

[Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>]

This commit moves the altp2m_vcpu_initialise and altp2m_vcpu_destroy
functions to common code. This makes it possible to use them in the common
implementation of HVMOP_altp2m_set_domain_state.

This commit contains only code movement, and no change in functionality is
intended.

This is commit 1/2 of the altp2m_vcpu_{initialise,destroy} phase.

Signed-off-by: Rose Spangler <Rose.Spangler@xxxxxxxxxxxxxx>
---
v6: Introduced this patch.
---
 xen/arch/x86/include/asm/altp2m.h |  6 -----
 xen/arch/x86/mm/altp2m.c          | 41 -------------------------------
 xen/common/altp2m.c               | 41 +++++++++++++++++++++++++++++++
 xen/include/xen/altp2m.h          |  6 +++++
 4 files changed, 47 insertions(+), 47 deletions(-)

diff --git a/xen/arch/x86/include/asm/altp2m.h 
b/xen/arch/x86/include/asm/altp2m.h
index b3d348386a00..43dd5d2acd9c 100644
--- a/xen/arch/x86/include/asm/altp2m.h
+++ b/xen/arch/x86/include/asm/altp2m.h
@@ -105,10 +105,6 @@ int altp2m_get_effective_entry(struct p2m_domain *ap2m, 
gfn_t gfn, mfn_t *mfn,
                                p2m_type_t *t, p2m_access_t *a,
                                bool prepopulate);
 
-/* Alternate p2m VCPU */
-void altp2m_vcpu_initialise(struct vcpu *v);
-void altp2m_vcpu_destroy(struct vcpu *v);
-
 int altp2m_vcpu_enable_ve(struct vcpu *v, gfn_t gfn);
 void altp2m_vcpu_disable_ve(struct vcpu *v);
 
@@ -151,8 +147,6 @@ static inline int _altp2m_get_effective_entry(struct 
p2m_domain *ap2m,
 
 /* Only declaration is needed. DCE will optimise it out when linking. */
 uint16_t altp2m_vcpu_idx(const struct vcpu *v);
-void altp2m_vcpu_initialise(struct vcpu *v);
-void altp2m_vcpu_destroy(struct vcpu *v);
 int altp2m_vcpu_enable_ve(struct vcpu *v, gfn_t gfn);
 void altp2m_vcpu_disable_ve(struct vcpu *v);
 
diff --git a/xen/arch/x86/mm/altp2m.c b/xen/arch/x86/mm/altp2m.c
index 46374373848d..0542e3ef9196 100644
--- a/xen/arch/x86/mm/altp2m.c
+++ b/xen/arch/x86/mm/altp2m.c
@@ -14,47 +14,6 @@
 #include "mm-locks.h"
 #include "p2m.h"
 
-void
-altp2m_vcpu_initialise(struct vcpu *v)
-{
-    if ( !v->domain->nr_altp2m )
-        return;
-
-    if ( v != current )
-        vcpu_pause(v);
-
-    vcpu_altp2m(v).p2midx = 0;
-    atomic_inc(&altp2m_get_altp2m(v)->active_vcpus);
-
-    altp2m_vcpu_update_p2m(v);
-
-    if ( v != current )
-        vcpu_unpause(v);
-}
-
-void
-altp2m_vcpu_destroy(struct vcpu *v)
-{
-    struct p2m_domain *p2m;
-
-    if ( !v->domain->nr_altp2m )
-        return;
-
-    if ( v != current )
-        vcpu_pause(v);
-
-    if ( (p2m = altp2m_get_altp2m(v)) )
-        atomic_dec(&p2m->active_vcpus);
-
-    altp2m_vcpu_disable_ve(v);
-
-    vcpu_altp2m(v).p2midx = INVALID_ALTP2M;
-    altp2m_vcpu_update_p2m(v);
-
-    if ( v != current )
-        vcpu_unpause(v);
-}
-
 int altp2m_vcpu_enable_ve(struct vcpu *v, gfn_t gfn)
 {
     struct domain *d = v->domain;
diff --git a/xen/common/altp2m.c b/xen/common/altp2m.c
index a731ad7cdab8..e699b64678d8 100644
--- a/xen/common/altp2m.c
+++ b/xen/common/altp2m.c
@@ -59,6 +59,47 @@ void altp2m_teardown(struct domain *d)
     XVFREE(d->altp2m_p2m);
 }
 
+#ifdef CONFIG_X86
+void altp2m_vcpu_initialise(struct vcpu *v)
+{
+    if ( !v->domain->nr_altp2m )
+        return;
+
+    if ( v != current )
+        vcpu_pause(v);
+
+    vcpu_altp2m(v).p2midx = 0;
+    atomic_inc(&altp2m_get_altp2m(v)->active_vcpus);
+
+    altp2m_vcpu_update_p2m(v);
+
+    if ( v != current )
+        vcpu_unpause(v);
+}
+
+void altp2m_vcpu_destroy(struct vcpu *v)
+{
+    struct p2m_domain *p2m;
+
+    if ( !v->domain->nr_altp2m )
+        return;
+
+    if ( v != current )
+        vcpu_pause(v);
+
+    if ( (p2m = altp2m_get_altp2m(v)) )
+        atomic_dec(&p2m->active_vcpus);
+
+    altp2m_vcpu_disable_ve(v);
+
+    vcpu_altp2m(v).p2midx = INVALID_ALTP2M;
+    altp2m_vcpu_update_p2m(v);
+
+    if ( v != current )
+        vcpu_unpause(v);
+}
+#endif
+
 /*
  * altp2m operations are envisioned as being used in several different
  * modes:
diff --git a/xen/include/xen/altp2m.h b/xen/include/xen/altp2m.h
index f5a4d0e60562..7defe6126563 100644
--- a/xen/include/xen/altp2m.h
+++ b/xen/include/xen/altp2m.h
@@ -24,6 +24,12 @@ int altp2m_init(struct domain *d);
 /* Free altp2m views */
 void altp2m_teardown(struct domain *d);
 
+#ifdef CONFIG_X86
+/* Alternate p2m VCPU */
+void altp2m_vcpu_initialise(struct vcpu *v);
+void altp2m_vcpu_destroy(struct vcpu *v);
+#endif
+
 #ifdef CONFIG_ALTP2M
 
 /* Alternate p2m HVM on/off per domain */
-- 
2.34.1