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[PATCH 2/2] misc/ivshmem: Mark shared memory regions as no vhost
From: |
Wang Xin |
Subject: |
[PATCH 2/2] misc/ivshmem: Mark shared memory regions as no vhost |
Date: |
Fri, 28 Aug 2020 17:59:53 +0800 |
Since ivshmem_bar2 not normal RAM in Guest, and it shouldn't have
vhost DMAing into them, exclude it from the vhost sections, mark the
shared memory regions as novhost.
Signed-off-by: Wang Xin <wangxinxin.wang@huawei.com>
---
hw/misc/ivshmem.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 2b6882face..1f3a7a1dfc 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -499,6 +499,7 @@ static void process_msg_shmem(IVShmemState *s, int fd,
Error **errp)
}
s->ivshmem_bar2 = &s->server_bar2;
+ memory_region_set_no_vhost(s->ivshmem_bar2, true);
}
static void process_msg_disconnect(IVShmemState *s, uint16_t posn,
@@ -855,6 +856,7 @@ static void ivshmem_common_realize(PCIDevice *dev, Error
**errp)
s->ivshmem_bar2 = host_memory_backend_get_memory(s->hostmem);
host_memory_backend_set_mapped(s->hostmem, true);
+ memory_region_set_no_vhost(s->ivshmem_bar2, true);
} else {
Chardev *chr = qemu_chr_fe_get_driver(&s->server_chr);
assert(chr);
--
2.26.0.windows.1