diff options
| author |   Pierre Pfister <ppfister@cisco.com> | 2017-04-20 15:34:00 +0200 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2017-04-26 19:36:35 +0000 |
| commit | bed5489a4eb109efe91dac8d259a03b1834b0db8 (patch) | |
| tree | 0bc56522a396ac336da14869b5dd5aba9fd09b3b /src/vnet | |
| parent | 5ef1fef692182dabc986995390d46552d88fb9df (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')
| -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 bcfef9f5..3ac76977 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, @@ -917,7 +917,7 @@ 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); @@ -1168,7 +1168,7 @@ 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); |