119 lines
4.3 KiB
Diff
119 lines
4.3 KiB
Diff
|
From b9b48ed46d2b0a3dd6e8406946eb0516ec75a004 Mon Sep 17 00:00:00 2001
|
||
|
From: Peter Xu <peterx@redhat.com>
|
||
|
Date: Fri, 23 Aug 2019 06:14:31 +0100
|
||
|
Subject: [PATCH 4/5] memory: Fix up memory_region_{add|del}_coalescing
|
||
|
MIME-Version: 1.0
|
||
|
Content-Type: text/plain; charset=UTF-8
|
||
|
Content-Transfer-Encoding: 8bit
|
||
|
|
||
|
RH-Author: Peter Xu <peterx@redhat.com>
|
||
|
Message-id: <20190823061431.31759-5-peterx@redhat.com>
|
||
|
Patchwork-id: 90136
|
||
|
O-Subject: [RHEL-AV-8.1 qemu-kvm PATCH 4/4] memory: Fix up memory_region_{add|del}_coalescing
|
||
|
Bugzilla: 1743142
|
||
|
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
|
RH-Acked-by: Auger Eric <eric.auger@redhat.com>
|
||
|
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
|
||
|
|
||
|
The old memory_region_{add|clear}_coalescing() has some defects
|
||
|
because they both changed mr->coalesced before updating the regions
|
||
|
using memory_region_update_coalesced_range_as(). Then when the
|
||
|
regions were updated in memory_region_update_coalesced_range_as() the
|
||
|
mr->coalesced will always be either one more or one less. So:
|
||
|
|
||
|
- For memory_region_add_coalescing: it'll always trying to remove the
|
||
|
newly added coalesced region while it shouldn't, and,
|
||
|
|
||
|
- For memory_region_clear_coalescing: when it calls the update there
|
||
|
will be no coalesced ranges on mr->coalesced because they were all
|
||
|
removed before hand so the update will probably do nothing for real.
|
||
|
|
||
|
Let's fix this. Now we've got flat_range_coalesced_io_notify() to
|
||
|
notify a single CoalescedMemoryRange instance change, so use it in the
|
||
|
existing memory_region_update_coalesced_range() logic by only notify
|
||
|
either an addition or deletion. Then we hammer both the
|
||
|
memory_region_{add|clear}_coalescing() to use it.
|
||
|
|
||
|
Fixes: 3ac7d43a6fbb5d4a3
|
||
|
Signed-off-by: Peter Xu <peterx@redhat.com>
|
||
|
Message-Id: <20190820141328.10009-5-peterx@redhat.com>
|
||
|
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
|
(cherry picked from commit b960fc1796fb078c21121abf01499603b66b3f57)
|
||
|
Signed-off-by: Peter Xu <peterx@redhat.com>
|
||
|
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
|
||
|
---
|
||
|
memory.c | 36 +++++++++++++++++-------------------
|
||
|
1 file changed, 17 insertions(+), 19 deletions(-)
|
||
|
|
||
|
diff --git a/memory.c b/memory.c
|
||
|
index c7cd43f..2f15180 100644
|
||
|
--- a/memory.c
|
||
|
+++ b/memory.c
|
||
|
@@ -2238,27 +2238,26 @@ void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp
|
||
|
qemu_ram_resize(mr->ram_block, newsize, errp);
|
||
|
}
|
||
|
|
||
|
-static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
|
||
|
+/*
|
||
|
+ * Call proper memory listeners about the change on the newly
|
||
|
+ * added/removed CoalescedMemoryRange.
|
||
|
+ */
|
||
|
+static void memory_region_update_coalesced_range(MemoryRegion *mr,
|
||
|
+ CoalescedMemoryRange *cmr,
|
||
|
+ bool add)
|
||
|
{
|
||
|
+ AddressSpace *as;
|
||
|
FlatView *view;
|
||
|
FlatRange *fr;
|
||
|
|
||
|
- view = address_space_get_flatview(as);
|
||
|
- FOR_EACH_FLAT_RANGE(fr, view) {
|
||
|
- if (fr->mr == mr) {
|
||
|
- flat_range_coalesced_io_del(fr, as);
|
||
|
- flat_range_coalesced_io_add(fr, as);
|
||
|
- }
|
||
|
- }
|
||
|
- flatview_unref(view);
|
||
|
-}
|
||
|
-
|
||
|
-static void memory_region_update_coalesced_range(MemoryRegion *mr)
|
||
|
-{
|
||
|
- AddressSpace *as;
|
||
|
-
|
||
|
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
|
||
|
- memory_region_update_coalesced_range_as(mr, as);
|
||
|
+ view = address_space_get_flatview(as);
|
||
|
+ FOR_EACH_FLAT_RANGE(fr, view) {
|
||
|
+ if (fr->mr == mr) {
|
||
|
+ flat_range_coalesced_io_notify(fr, as, cmr, add);
|
||
|
+ }
|
||
|
+ }
|
||
|
+ flatview_unref(view);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
@@ -2276,7 +2275,7 @@ void memory_region_add_coalescing(MemoryRegion *mr,
|
||
|
|
||
|
cmr->addr = addrrange_make(int128_make64(offset), int128_make64(size));
|
||
|
QTAILQ_INSERT_TAIL(&mr->coalesced, cmr, link);
|
||
|
- memory_region_update_coalesced_range(mr);
|
||
|
+ memory_region_update_coalesced_range(mr, cmr, true);
|
||
|
memory_region_set_flush_coalesced(mr);
|
||
|
}
|
||
|
|
||
|
@@ -2294,10 +2293,9 @@ void memory_region_clear_coalescing(MemoryRegion *mr)
|
||
|
while (!QTAILQ_EMPTY(&mr->coalesced)) {
|
||
|
cmr = QTAILQ_FIRST(&mr->coalesced);
|
||
|
QTAILQ_REMOVE(&mr->coalesced, cmr, link);
|
||
|
+ memory_region_update_coalesced_range(mr, cmr, false);
|
||
|
g_free(cmr);
|
||
|
}
|
||
|
-
|
||
|
- memory_region_update_coalesced_range(mr);
|
||
|
}
|
||
|
|
||
|
void memory_region_set_flush_coalesced(MemoryRegion *mr)
|
||
|
--
|
||
|
1.8.3.1
|
||
|
|