diff options
| author |   Pierre Pfister <ppfister@cisco.com> | 2017-04-20 15:34:00 +0200 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2017-05-17 12:02:17 +0000 |
| commit | c4352553ee5a824c1c143c330e69b1ec063b4377 (patch) | |
| tree | 5ea0426b5e310e2bf2e305c50db9631df61c0a19 /src/vnet/devices/virtio | |
| parent | 1985c93bd728db22c946e05691f21a2f9774e458 (diff) | |
vhost: Fix mmap size calculation
I had a bug where a requested size of 1G was resulting in
an aligned size of '1G + 2M', resulting in an OOM error.
Previous code was adding one huge page size
when memory is already aligned.
Change-Id: Idd3aa0e9b893fb3efccba6ae1c7161e26d3f9456
Signed-off-by: Pierre Pfister <ppfister@cisco.com>
Diffstat (limited to 'src/vnet/devices/virtio')
| -rw-r--r-- | src/vnet/devices/virtio/vhost-user.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/vnet/devices/virtio/vhost-user.c b/src/vnet/devices/virtio/vhost-user.c index 0593c713ae6..114ccdd0cd0 100644 --- a/src/vnet/devices/virtio/vhost-user.c +++ b/src/vnet/devices/virtio/vhost-user.c @@ -303,7 +303,7 @@ unmap_all_mem_regions (vhost_user_intf_t * vui) ssize_t map_sz = (vui->regions[i].memory_size + vui->regions[i].mmap_offset + - page_sz) & ~(page_sz - 1); + page_sz - 1) & ~(page_sz - 1); r = munmap (vui->region_mmap_addr[i] - vui->regions[i].mmap_offset, @@ -928,7 +928,7 @@ vhost_user_socket_read (unix_file_t * uf) /* align size to 2M page */ ssize_t map_sz = (vui->regions[i].memory_size + vui->regions[i].mmap_offset + - page_sz) & ~(page_sz - 1); + page_sz - 1) & ~(page_sz - 1); vui->region_mmap_addr[i] = mmap (0, map_sz, PROT_READ | PROT_WRITE, MAP_SHARED, fds[i], 0); @@ -1179,7 +1179,7 @@ vhost_user_socket_read (unix_file_t * uf) /* align size to 2M page */ long page_sz = get_huge_page_size (fd); ssize_t map_sz = - (msg.log.size + msg.log.offset + page_sz) & ~(page_sz - 1); + (msg.log.size + msg.log.offset + page_sz - 1) & ~(page_sz - 1); vui->log_base_addr = mmap (0, map_sz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); |