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author | Jan Kiszka <jan.kiszka@siemens.com> | 2012-08-23 13:02:30 +0200 |
---|---|---|
committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-09-11 18:15:29 -0300 |
commit | 59023ef41179f61bfc1e2500c406ad28d046b09d (patch) | |
tree | dcce1f4eae5ee19dab446f88aeda67b64b65e8eb /memory.c | |
parent | d410515e035ccb7433c6a3a8157742f6f679f57f (diff) | |
download | hqemu-59023ef41179f61bfc1e2500c406ad28d046b09d.zip hqemu-59023ef41179f61bfc1e2500c406ad28d046b09d.tar.gz |
memory: Use transaction_begin/commit also for single-step operations
Wrap also simple operations consisting only of a single step with
memory_region_transaction_begin/commit. This allows to perform
additional steps like coalesced MMIO flushing from a single place.
This requires dropping some micro-optimizations: The skipping of
topology updates after updating disabled or unregistered regions.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'memory.c')
-rw-r--r-- | memory.c | 40 |
1 files changed, 25 insertions, 15 deletions
@@ -1076,8 +1076,9 @@ void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) { uint8_t mask = 1 << client; + memory_region_transaction_begin(); mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask); - memory_region_update_topology(mr); + memory_region_transaction_commit(); } bool memory_region_get_dirty(MemoryRegion *mr, target_phys_addr_t addr, @@ -1110,16 +1111,18 @@ void memory_region_sync_dirty_bitmap(MemoryRegion *mr) void memory_region_set_readonly(MemoryRegion *mr, bool readonly) { if (mr->readonly != readonly) { + memory_region_transaction_begin(); mr->readonly = readonly; - memory_region_update_topology(mr); + memory_region_transaction_commit(); } } void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable) { if (mr->readable != readable) { + memory_region_transaction_begin(); mr->readable = readable; - memory_region_update_topology(mr); + memory_region_transaction_commit(); } } @@ -1230,6 +1233,7 @@ void memory_region_add_eventfd(MemoryRegion *mr, }; unsigned i; + memory_region_transaction_begin(); for (i = 0; i < mr->ioeventfd_nb; ++i) { if (memory_region_ioeventfd_before(mrfd, mr->ioeventfds[i])) { break; @@ -1241,7 +1245,7 @@ void memory_region_add_eventfd(MemoryRegion *mr, memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i], sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i)); mr->ioeventfds[i] = mrfd; - memory_region_update_topology(mr); + memory_region_transaction_commit(); } void memory_region_del_eventfd(MemoryRegion *mr, @@ -1260,6 +1264,7 @@ void memory_region_del_eventfd(MemoryRegion *mr, }; unsigned i; + memory_region_transaction_begin(); for (i = 0; i < mr->ioeventfd_nb; ++i) { if (memory_region_ioeventfd_equal(mrfd, mr->ioeventfds[i])) { break; @@ -1271,7 +1276,7 @@ void memory_region_del_eventfd(MemoryRegion *mr, --mr->ioeventfd_nb; mr->ioeventfds = g_realloc(mr->ioeventfds, sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1); - memory_region_update_topology(mr); + memory_region_transaction_commit(); } static void memory_region_add_subregion_common(MemoryRegion *mr, @@ -1280,6 +1285,8 @@ static void memory_region_add_subregion_common(MemoryRegion *mr, { MemoryRegion *other; + memory_region_transaction_begin(); + assert(!subregion->parent); subregion->parent = mr; subregion->addr = offset; @@ -1312,7 +1319,7 @@ static void memory_region_add_subregion_common(MemoryRegion *mr, } QTAILQ_INSERT_TAIL(&mr->subregions, subregion, subregions_link); done: - memory_region_update_topology(mr); + memory_region_transaction_commit(); } @@ -1338,10 +1345,11 @@ void memory_region_add_subregion_overlap(MemoryRegion *mr, void memory_region_del_subregion(MemoryRegion *mr, MemoryRegion *subregion) { + memory_region_transaction_begin(); assert(subregion->parent == mr); subregion->parent = NULL; QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link); - memory_region_update_topology(mr); + memory_region_transaction_commit(); } void memory_region_set_enabled(MemoryRegion *mr, bool enabled) @@ -1349,8 +1357,9 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled) if (enabled == mr->enabled) { return; } + memory_region_transaction_begin(); mr->enabled = enabled; - memory_region_update_topology(NULL); + memory_region_transaction_commit(); } void memory_region_set_address(MemoryRegion *mr, target_phys_addr_t addr) @@ -1376,16 +1385,15 @@ void memory_region_set_address(MemoryRegion *mr, target_phys_addr_t addr) void memory_region_set_alias_offset(MemoryRegion *mr, target_phys_addr_t offset) { - target_phys_addr_t old_offset = mr->alias_offset; - assert(mr->alias); - mr->alias_offset = offset; - if (offset == old_offset || !mr->parent) { + if (offset == mr->alias_offset) { return; } - memory_region_update_topology(mr); + memory_region_transaction_begin(); + mr->alias_offset = offset; + memory_region_transaction_commit(); } ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr) @@ -1517,14 +1525,16 @@ void memory_listener_unregister(MemoryListener *listener) void set_system_memory_map(MemoryRegion *mr) { + memory_region_transaction_begin(); address_space_memory.root = mr; - memory_region_update_topology(NULL); + memory_region_transaction_commit(); } void set_system_io_map(MemoryRegion *mr) { + memory_region_transaction_begin(); address_space_io.root = mr; - memory_region_update_topology(NULL); + memory_region_transaction_commit(); } uint64_t io_mem_read(MemoryRegion *mr, target_phys_addr_t addr, unsigned size) |