[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 1/6] remove smaller slots if registering a bigger on
From: |
Glauber Costa |
Subject: |
[Qemu-devel] [PATCH 1/6] remove smaller slots if registering a bigger one |
Date: |
Tue, 20 Jan 2009 13:51:00 -0500 |
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 <address@hidden>
---
kvm-all.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 9fb295c..53aca0a 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
Re: [Qemu-devel] [PATCH 0/6] Bypass tcg memory functions -v1.0-2009, Paul Brook, 2009/01/21