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vhost-user: fix mmap offset calculation 

qemu_get_ram_block_host_ptr should get ram_addr_t,
vhost-user passes in GPA.
That's very wrong.

Reported-by: Linhaifeng <haifeng.lin@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2014-11-02 20:00:28 +02:00
parent ac369a7796
commit d3f16ec887
1 changed files with 1 additions and 1 deletions
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2
hw/virtio/vhost-user.c
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@ -226,7 +226,7 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request,
msg.memory.regions[fd_num].memory_size = reg->memory_size;
msg.memory.regions[fd_num].guest_phys_addr = reg->guest_phys_addr;
msg.memory.regions[fd_num].mmap_offset = reg->userspace_addr -
(uintptr_t) qemu_get_ram_block_host_ptr(reg->guest_phys_addr);
(uintptr_t) qemu_get_ram_block_host_ptr(ram_addr);
assert(fd_num < VHOST_MEMORY_MAX_NREGIONS);
fds[fd_num++] = fd;
}