commit 91138037cb341a04a66e4c43b6cb31d5d8a43a73
author Markus Armbruster <armbru@redhat.com> Wed Jul 31 15:11:08 2013 +0200
committer Anthony Liguori <anthony@codemonkey.ws> Thu Sep 12 11:45:31 2013 -0500
tree 9ab40169a46bf3ab0de332920ff8cceb0edecc88
parent 3435f39513a104294b5e3bbf3612047028d25cfc

exec: Simplify the guest physical memory allocation hook

Make it a generic hook rather than a KVM hook.  Less code and
ifdeffery.

Since the only user of the hook is old S390 KVM, there's hope we can
get rid of it some day.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Message-id: 1375276272-15988-5-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>

exec.c

diff --git a/exec.c b/exec.c
index 0a6dd2e..a3dfd1d 100644
--- a/exec.c
+++ b/exec.c
@@ -749,6 +749,18 @@
                              uint16_t section);
 static subpage_t *subpage_init(AddressSpace *as, hwaddr base);
 
+static void *(*phys_mem_alloc)(ram_addr_t size) = qemu_anon_ram_alloc;
+
+/*
+ * Set a custom physical guest memory alloator.
+ * Accelerators with unusual needs may need this.  Hopefully, we can
+ * get rid of it eventually.
+ */
+void phys_mem_set_alloc(void *(*alloc)(ram_addr_t))
+{
+    phys_mem_alloc = alloc;
+}
+
 static uint16_t phys_section_add(MemoryRegionSection *section)
 {
     /* The physical section number is ORed with a page-aligned
@@ -1124,12 +1136,7 @@
 #endif
         }
         if (!new_block->host) {
-            if (kvm_enabled()) {
-                /* some s390/kvm configurations have special constraints */
-                new_block->host = kvm_ram_alloc(size);
-            } else {
-                new_block->host = qemu_anon_ram_alloc(size);
-            }
+            new_block->host = phys_mem_alloc(size);
             memory_try_enable_merging(new_block->host, size);
         }
     }