This simplifies a later switch to the memory API in slot management.
Signed-off-by: Avi Kivity <a...@redhat.com>
---
kvm-all.c | 29 +++++++++++++++++------------
kvm.h | 4 ++--
memory.c | 6 +++---
target-i386/kvm.c | 7 +++----
4 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 4c466d6..4f58ae8 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -50,7 +50,7 @@
{
target_phys_addr_t start_addr;
ram_addr_t memory_size;
- ram_addr_t phys_offset;
+ void *ram;
int slot;
int flags;
} KVMSlot;
@@ -146,17 +146,16 @@ struct KVMState
return found;
}
-int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
- target_phys_addr_t *phys_addr)
+int kvm_physical_memory_addr_from_host(KVMState *s, void *ram,
+ target_phys_addr_t *phys_addr)
{
int i;
for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
KVMSlot *mem = &s->slots[i];
- if (ram_addr >= mem->phys_offset &&
- ram_addr < mem->phys_offset + mem->memory_size) {
- *phys_addr = mem->start_addr + (ram_addr - mem->phys_offset);
+ if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
+ *phys_addr = mem->start_addr + (ram - mem->ram);
return 1;
}
}
@@ -171,7 +170,7 @@ static int kvm_set_user_memory_region(KVMState *s, KVMSlot
*slot)
mem.slot = slot->slot;
mem.guest_phys_addr = slot->start_addr;
mem.memory_size = slot->memory_size;
- mem.userspace_addr = (unsigned long)qemu_safe_ram_ptr(slot->phys_offset);
+ mem.userspace_addr = (unsigned long)slot->ram;
mem.flags = slot->flags;
if (s->migration_log) {
mem.flags |= KVM_MEM_LOG_DIRTY_PAGES;
@@ -527,6 +526,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
KVMSlot *mem, old;
int err;
+ void *ram = NULL;
/* kvm works in page size chunks, but the function may be called
with sub-page size and unaligned start address. */
@@ -536,6 +536,10 @@ static void kvm_set_phys_mem(target_phys_addr_t
start_addr, ram_addr_t size,
/* KVM does not support read-only slots */
phys_offset &= ~IO_MEM_ROM;
+ if ((phys_offset & ~TARGET_PAGE_MASK) == IO_MEM_RAM) {
+ ram = qemu_safe_ram_ptr(phys_offset);
+ }
+
while (1) {
mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size);
if (!mem) {
@@ -544,7 +548,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
if (flags < IO_MEM_UNASSIGNED && start_addr >= mem->start_addr &&
(start_addr + size <= mem->start_addr + mem->memory_size) &&
- (phys_offset - start_addr == mem->phys_offset - mem->start_addr)) {
+ (ram - start_addr == mem->ram - mem->start_addr)) {
/* The new slot fits into the existing one and comes with
* identical parameters - update flags and done. */
kvm_slot_dirty_pages_log_change(mem, log_dirty);
@@ -576,7 +580,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
mem = kvm_alloc_slot(s);
mem->memory_size = old.memory_size;
mem->start_addr = old.start_addr;
- mem->phys_offset = old.phys_offset;
+ mem->ram = old.ram;
mem->flags = kvm_mem_flags(s, log_dirty);
err = kvm_set_user_memory_region(s, mem);
@@ -588,6 +592,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
start_addr += old.memory_size;
phys_offset += old.memory_size;
+ ram += old.memory_size;
size -= old.memory_size;
continue;
}
@@ -597,7 +602,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
mem = kvm_alloc_slot(s);
mem->memory_size = start_addr - old.start_addr;
mem->start_addr = old.start_addr;
- mem->phys_offset = old.phys_offset;
+ mem->ram = old.ram;
mem->flags = kvm_mem_flags(s, log_dirty);
err = kvm_set_user_memory_region(s, mem);
@@ -621,7 +626,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
mem->start_addr = start_addr + size;
size_delta = mem->start_addr - old.start_addr;
mem->memory_size = old.memory_size - size_delta;
- mem->phys_offset = old.phys_offset + size_delta;
+ mem->ram = old.ram + size_delta;
mem->flags = kvm_mem_flags(s, log_dirty);
err = kvm_set_user_memory_region(s, mem);
@@ -644,7 +649,7 @@ static void kvm_set_phys_mem(target_phys_addr_t start_addr,
ram_addr_t size,
mem = kvm_alloc_slot(s);
mem->memory_size = size;
mem->start_addr = start_addr;
- mem->phys_offset = phys_offset;
+ mem->ram = ram;
mem->flags = kvm_mem_flags(s, log_dirty);
err = kvm_set_user_memory_region(s, mem);
diff --git a/kvm.h b/kvm.h
index 243b063..c1de81a 100644
--- a/kvm.h
+++ b/kvm.h
@@ -188,8 +188,8 @@ static inline void cpu_synchronize_post_init(CPUState *env)
#if !defined(CONFIG_USER_ONLY)
-int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
- target_phys_addr_t *phys_addr);
+int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
+ target_phys_addr_t *phys_addr);
#endif
#endif
diff --git a/memory.c b/memory.c
index 2e5ff43..c08186d 100644
--- a/memory.c
+++ b/memory.c
@@ -764,11 +764,11 @@ static void
address_space_update_topology_pass(AddressSpace *as,
if (adding) {
if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
- MEMORY_LISTENER_UPDATE_REGION(frold, as, log_stop);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, log_stop);
as->ops->log_stop(as, frnew);
} else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
as->ops->log_start(as, frnew);
- MEMORY_LISTENER_UPDATE_REGION(frold, as, log_start);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, log_start);
}
}
@@ -779,7 +779,7 @@ static void address_space_update_topology_pass(AddressSpace
*as,
if (adding) {
as->ops->range_add(as, frnew);
- MEMORY_LISTENER_UPDATE_REGION(frold, as, region_add);
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, region_add);
}
++inew;
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 5bfc21f..74d81ef 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -253,8 +253,7 @@ int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void
*addr)
if ((env->mcg_cap & MCG_SER_P) && addr
&& (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) {
if (qemu_ram_addr_from_host(addr, &ram_addr) ||
- !kvm_physical_memory_addr_from_ram(env->kvm_state, ram_addr,
- &paddr)) {
+ !kvm_physical_memory_addr_from_host(env->kvm_state, addr, &paddr))
{
fprintf(stderr, "Hardware memory error for memory used by "
"QEMU itself instead of guest system!\n");
/* Hope we are lucky for AO MCE */
@@ -286,8 +285,8 @@ int kvm_arch_on_sigbus(int code, void *addr)
/* Hope we are lucky for AO MCE */
if (qemu_ram_addr_from_host(addr, &ram_addr) ||
- !kvm_physical_memory_addr_from_ram(first_cpu->kvm_state, ram_addr,
- &paddr)) {
+ !kvm_physical_memory_addr_from_host(first_cpu->kvm_state, addr,
+ &paddr)) {
fprintf(stderr, "Hardware memory error for memory used by "
"QEMU itself instead of guest system!: %p\n", addr);
return 0;
--
1.7.7.1
--
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