Hi Jason,
[auto build test WARNING on vhost/linux-next]
[also build test WARNING on v4.9 next-20161214]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Jason-Wang/vhost-introduce-O-1-vq-metadata-cache/20161214-160153
base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
config: i386-randconfig-x005-201650 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All warnings (new ones prefixed by >>):
drivers/vhost/vhost.c: In function 'vhost_vq_meta_fetch':
>> drivers/vhost/vhost.c:719:9: warning: cast to pointer from integer of
>> different size [-Wint-to-pointer-cast]
return (void *)(node->userspace_addr + (u64)addr - node->start);
^
vim +719 drivers/vhost/vhost.c
703 node->start,
704 node->size))
705 return 0;
706 }
707 return 1;
708 }
709
710 static inline void __user *vhost_vq_meta_fetch(struct vhost_virtqueue
*vq,
711 u64 addr, unsigned int
size,
712 int type)
713 {
714 const struct vhost_umem_node *node = vq->meta_iotlb[type];
715
716 if (!node)
717 return NULL;
718
> 719 return (void *)(node->userspace_addr + (u64)addr - node->start);
720 }
721
722 /* Can we switch to this memory table? */
723 /* Caller should have device mutex but not vq mutex */
724 static int memory_access_ok(struct vhost_dev *d, struct vhost_umem
*umem,
725 int log_all)
726 {
727 int i;
---
0-DAY kernel test infrastructureOpen Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
