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[PATCH for-6.0 v1 3/3] softmmu/physmem: Fix qemu_ram_remap() to handle s
From: |
David Hildenbrand |
Subject: |
[PATCH for-6.0 v1 3/3] softmmu/physmem: Fix qemu_ram_remap() to handle shared anonymous memory |
Date: |
Tue, 6 Apr 2021 10:01:26 +0200 |
RAM_SHARED now also properly indicates shared anonymous memory. Let's check
that flag for anonymous memory as well, to restore the proper mapping.
Fixes: 06329ccecfa0 ("mem: add share parameter to memory-backend-ram")
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
softmmu/physmem.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index afff96a6dc..cc59f05593 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2222,13 +2222,13 @@ void qemu_ram_remap(ram_addr_t addr, ram_addr_t length)
abort();
} else {
flags = MAP_FIXED;
+ flags |= block->flags & RAM_SHARED ?
+ MAP_SHARED : MAP_PRIVATE;
if (block->fd >= 0) {
- flags |= (block->flags & RAM_SHARED ?
- MAP_SHARED : MAP_PRIVATE);
area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
flags, block->fd, offset);
} else {
- flags |= MAP_PRIVATE | MAP_ANONYMOUS;
+ flags |= MAP_ANONYMOUS;
area = mmap(vaddr, length, PROT_READ | PROT_WRITE,
flags, -1, 0);
}
--
2.30.2