It's like a shark eating a bunch of small fishes:
in some situations (vga linear frame buffer mapping,
for example), we need to register a new slot in place
of older, smaller ones. This patch handles this case
Signed-off-by: Glauber Costa <glom...@redhat.com>
---
kvm-all.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 11034df..3c12c37 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -582,6 +582,16 @@ void kvm_set_phys_mem(target_phys_addr_t start_addr,
kvm_set_phys_mem(mem_start, mem_size, mem_offset);
return;
+ } else if (start_addr <= mem->start_addr &&
+ (start_addr + size) >= (mem->start_addr +
+ mem->memory_size)) {
+ KVMSlot slot;
+ /* unregister whole slot */
+ memcpy(&slot, mem, sizeof(slot));
+ mem->memory_size = 0;
+ kvm_set_user_memory_region(s, mem);
+
+ kvm_set_phys_mem(start_addr, size, phys_offset);
} else {
printf("Registering overlapping slot\n");
abort();
--
1.5.6.5
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