kvm: Add sanity checks to slot management (Jan Kiszka)

Fail loudly if we run out of memory slot.

Make sure that dirty log start/stop works with consistent memory regions
by reporting invalid parameters. This reveals several inconsistencies in
the vga code, patch to fix them follows later in this series.

And, for simplicity reasons, also catch and report unaligned memory
regions passed to kvm_set_phys_mem (KVM works on page basis).

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7138 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 4 insertions, 3 deletions

diff --git a/kvm.h b/kvm.h
index 0d6bf7e4c..803a87411 100644
--- a/kvm.h
+++ b/kvm.h
@@ -40,10 +40,11 @@ void kvm_set_phys_mem(target_phys_addr_t start_addr,
                       ram_addr_t size,
                       ram_addr_t phys_offset);
 
-void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, target_phys_addr_t end_addr);
+void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
+                                    target_phys_addr_t end_addr);
 
-int kvm_log_start(target_phys_addr_t phys_addr, target_phys_addr_t len);
-int kvm_log_stop(target_phys_addr_t phys_addr, target_phys_addr_t len);
+int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
+int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
 
 int kvm_has_sync_mmu(void);