[HVM] Save/restore cleanups 01: PIT

Define public structure for the saved PIT data and use it instead
of a series of explicit loads and stores.
Don't save ephemeral Xen timer structs; rebuild them instead.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/xen/include/asm-x86/hvm/support.h b/xen/include/asm-x86/hvm/support.h
index 2274578aa1..3d40cd9962 100644
--- a/xen/include/asm-x86/hvm/support.h
+++ b/xen/include/asm-x86/hvm/support.h
@@ -186,7 +186,6 @@ static inline void hvm_put_buffer(hvm_domain_context_t *h, const char *buf, int
     h->cur += len;
 }
 
-
 static inline char hvm_get_byte(hvm_domain_context_t *h)
 {
     if (h->cur >= HVM_CTXT_SIZE) {
@@ -240,6 +239,12 @@ static inline void hvm_get_buffer(hvm_domain_context_t *h, char *buf, int len)
     h->cur += len;
 }
 
+#define hvm_put_struct(_h, _p) \
+    hvm_put_buffer((_h), (char *)(_p), sizeof(*(_p)))
+#define hvm_get_struct(_h, _p) \
+    hvm_get_buffer((_h), (char *)(_p), sizeof(*(_p)))
+
+
 extern int hvm_save(struct vcpu*, hvm_domain_context_t *h);
 extern int hvm_load(struct vcpu*, hvm_domain_context_t *h);