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[Qemu-devel] [PULL 04/13] kvm-all: put kvm_mem_flags to more work
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 04/13] kvm-all: put kvm_mem_flags to more work |
Date: |
Mon, 6 Jul 2015 16:22:12 +0200 |
From: Andrew Jones <address@hidden>
Currently kvm_mem_flags just translates bools to bits, let's
make it also determine the bools first. This avoids its parameter
list growing each time we add a flag.
Signed-off-by: Andrew Jones <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
kvm-all.c | 42 ++++++++++++++++++++----------------------
1 file changed, 20 insertions(+), 22 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 53e01d4..195886d 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -291,45 +291,47 @@ err:
* dirty pages logging control
*/
-static int kvm_mem_flags(KVMState *s, bool log_dirty, bool readonly)
+static int kvm_mem_flags(MemoryRegion *mr)
{
+ bool readonly = mr->readonly || memory_region_is_romd(mr);
int flags = 0;
- flags = log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0;
+
+ if (memory_region_get_dirty_log_mask(mr) != 0) {
+ flags |= KVM_MEM_LOG_DIRTY_PAGES;
+ }
if (readonly && kvm_readonly_mem_allowed) {
flags |= KVM_MEM_READONLY;
}
return flags;
}
-static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty)
+static int kvm_slot_update_flags(KVMSlot *mem, MemoryRegion *mr)
{
KVMState *s = kvm_state;
- int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
int old_flags;
old_flags = mem->flags;
-
- flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty, false);
- mem->flags = flags;
+ mem->flags = kvm_mem_flags(mr);
/* If nothing changed effectively, no need to issue ioctl */
- if (flags == old_flags) {
+ if (mem->flags == old_flags) {
return 0;
}
return kvm_set_user_memory_region(s, mem);
}
-static int kvm_dirty_pages_log_change(hwaddr phys_addr,
- ram_addr_t size, bool log_dirty)
+static int kvm_section_update_flags(MemoryRegionSection *section)
{
KVMState *s = kvm_state;
+ hwaddr phys_addr = section->offset_within_address_space;
+ ram_addr_t size = int128_get64(section->size);
KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size);
if (mem == NULL) {
return 0;
} else {
- return kvm_slot_dirty_pages_log_change(mem, log_dirty);
+ return kvm_slot_update_flags(mem, section->mr);
}
}
@@ -343,8 +345,7 @@ static void kvm_log_start(MemoryListener *listener,
return;
}
- r = kvm_dirty_pages_log_change(section->offset_within_address_space,
- int128_get64(section->size), true);
+ r = kvm_section_update_flags(section);
if (r < 0) {
abort();
}
@@ -360,8 +361,7 @@ static void kvm_log_stop(MemoryListener *listener,
return;
}
- r = kvm_dirty_pages_log_change(section->offset_within_address_space,
- int128_get64(section->size), false);
+ r = kvm_section_update_flags(section);
if (r < 0) {
abort();
}
@@ -638,9 +638,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
KVMSlot *mem, old;
int err;
MemoryRegion *mr = section->mr;
- bool log_dirty = memory_region_get_dirty_log_mask(mr) != 0;
bool writeable = !mr->readonly && !mr->rom_device;
- bool readonly_flag = mr->readonly || memory_region_is_romd(mr);
hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = int128_get64(section->size);
void *ram = NULL;
@@ -684,7 +682,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
(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);
+ kvm_slot_update_flags(mem, mr);
return;
}
@@ -717,7 +715,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
mem->memory_size = old.memory_size;
mem->start_addr = old.start_addr;
mem->ram = old.ram;
- mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag);
+ mem->flags = kvm_mem_flags(mr);
err = kvm_set_user_memory_region(s, mem);
if (err) {
@@ -738,7 +736,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
mem->memory_size = start_addr - old.start_addr;
mem->start_addr = old.start_addr;
mem->ram = old.ram;
- mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag);
+ mem->flags = kvm_mem_flags(mr);
err = kvm_set_user_memory_region(s, mem);
if (err) {
@@ -762,7 +760,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
size_delta = mem->start_addr - old.start_addr;
mem->memory_size = old.memory_size - size_delta;
mem->ram = old.ram + size_delta;
- mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag);
+ mem->flags = kvm_mem_flags(mr);
err = kvm_set_user_memory_region(s, mem);
if (err) {
@@ -784,7 +782,7 @@ static void kvm_set_phys_mem(MemoryRegionSection *section,
bool add)
mem->memory_size = size;
mem->start_addr = start_addr;
mem->ram = ram;
- mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag);
+ mem->flags = kvm_mem_flags(mr);
err = kvm_set_user_memory_region(s, mem);
if (err) {
--
1.8.3.1
- [Qemu-devel] [PULL 00/13] KVM patches (SMM implementation) for 2015-07-06, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 03/13] target-i386: add support for SMBASE MSR and SMIs, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 04/13] kvm-all: put kvm_mem_flags to more work,
Paolo Bonzini <=
- [Qemu-devel] [PULL 01/13] linux-headers: Update to 4.2-rc1, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 02/13] piix4/ich9: do not raise SMI on ACPI enable/disable commands, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 05/13] kvm-all: remove useless typedef, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 08/13] kvm-all: add support for multiple address spaces, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 06/13] kvm-all: move internal types to kvm_int.h, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 09/13] kvm-all: kvm_irqchip_create is not expected to fail, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 07/13] kvm-all: make KVM's memory listener more generic, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 11/13] pc_piix: rename kvm_enabled to smm_enabled, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 13/13] pc: add SMM property, Paolo Bonzini, 2015/07/06
- [Qemu-devel] [PULL 12/13] ich9: add smm_enabled field and arguments, Paolo Bonzini, 2015/07/06