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[Qemu-devel] [PATCH 1/2] kvm: Don't walk memory_size == 0 slots in kvm_c
From: |
Marcelo Tosatti |
Subject: |
[Qemu-devel] [PATCH 1/2] kvm: Don't walk memory_size == 0 slots in kvm_client_migration_log |
Date: |
Tue, 10 Aug 2010 12:12:05 -0300 |
From: Alex Williamson <address@hidden>
If we've unregistered a memory area, we should avoid calling
qemu_get_ram_ptr() on the left over phys_offset cruft in the
slot array. Now that we support removing ramblocks, the
phys_offset ram_addr_t can go away and cause a lookup fault
and abort.
Signed-off-by: Alex Williamson <address@hidden>
Signed-off-by: Marcelo Tosatti <address@hidden>
---
kvm-all.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 7635f2f..736c516 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -274,6 +274,9 @@ static int kvm_set_migration_log(int enable)
for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
mem = &s->slots[i];
+ if (!mem->memory_size) {
+ continue;
+ }
if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
continue;
}
--
1.6.6.1