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[Qemu-devel] [PATCH 24/30] exec: separate current radix tree from the on
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 24/30] exec: separate current radix tree from the one being built |
Date: |
Fri, 28 Jun 2013 20:26:43 +0200 |
This same treatment previously done to phys_node_map and phys_sections
is now applied to the dispatch field of AddressSpace. Topology updates
use as->next_dispatch while accesses use as->dispatch.
Signed-off-by: Paolo Bonzini <address@hidden>
---
exec.c | 23 ++++++++++++++++-------
include/exec/memory.h | 1 +
2 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/exec.c b/exec.c
index dffdf23..0d852ee 100644
--- a/exec.c
+++ b/exec.c
@@ -855,7 +855,7 @@ static void register_multipage(AddressSpaceDispatch *d,
static void mem_add(MemoryListener *listener, MemoryRegionSection *section)
{
AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener);
- AddressSpaceDispatch *d = as->dispatch;
+ AddressSpaceDispatch *d = as->next_dispatch;
MemoryRegionSection now = *section, remain = *section;
Int128 page_size = int128_make64(TARGET_PAGE_SIZE);
@@ -1718,9 +1718,21 @@ static void io_mem_init(void)
static void mem_begin(MemoryListener *listener)
{
AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener);
+ AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1);
+
+ d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 };
+ d->as = as;
+ as->next_dispatch = d;
+}
+
+static void mem_commit(MemoryListener *listener)
+{
+ AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener);
AddressSpaceDispatch *d = as->dispatch;
- d->phys_map.ptr = PHYS_MAP_NODE_NIL;
+ /* cur_map will soon be switched to next_map, too. */
+ as->dispatch = as->next_dispatch;
+ g_free(d);
}
static void core_begin(MemoryListener *listener)
@@ -1784,13 +1796,10 @@ static MemoryListener tcg_memory_listener = {
void address_space_init_dispatch(AddressSpace *as)
{
- AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1);
-
- d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 };
- d->as = as;
- as->dispatch = d;
+ as->dispatch = NULL;
as->dispatch_listener = (MemoryListener) {
.begin = mem_begin,
+ .commit = mem_commit,
.region_add = mem_add,
.region_nop = mem_add,
.priority = 0,
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 1cd1f50..b21a460 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -212,6 +212,7 @@ struct AddressSpace {
int ioeventfd_nb;
struct MemoryRegionIoeventfd *ioeventfds;
struct AddressSpaceDispatch *dispatch;
+ struct AddressSpaceDispatch *next_dispatch;
MemoryListener dispatch_listener;
QTAILQ_ENTRY(AddressSpace) address_spaces_link;
--
1.8.1.4
- [Qemu-devel] [PATCH 10/30] rcu: add call_rcu, (continued)
- [Qemu-devel] [PATCH 10/30] rcu: add call_rcu, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 15/30] cpus: report RCU quiescent states, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 16/30] block: report RCU quiescent states, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 17/30] migration: report RCU quiescent states, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 19/30] memory: avoid ref/unref in memory_region_find, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 18/30] memory: protect current_map by RCU, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 20/30] exec: change well-known physical sections to macros, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 21/30] exec: separate current memory map from the one being built, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 22/30] memory: move MemoryListener declaration earlier, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 23/30] exec: move listener from AddressSpaceDispatch to AddressSpace, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 24/30] exec: separate current radix tree from the one being built,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 26/30] exec: remove cur_map, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 25/30] exec: put memory map in AddressSpaceDispatch, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 27/30] exec: change some APIs to take AddressSpaceDispatch, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 28/30] exec: change iotlb APIs to take AddressSpaceDispatch, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 29/30] exec: add a reference to the region returned by address_space_translate, Paolo Bonzini, 2013/06/28
- [Qemu-devel] [PATCH 30/30] exec: put address space dispatch under RCU critical section, Paolo Bonzini, 2013/06/28