Hi Nitesh, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/linux-next] [also build test WARNING on v4.15-rc1 next-20171128] [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/nilal-redhat-com/KVM-Guest-page-hinting/20171129-180331 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: i386-randconfig-x016-201748 (attached as .config) compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers//virtio/virtio_balloon.c: In function 'tell_host_one_page': >> drivers//virtio/virtio_balloon.c:107:28: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] u64 gpaddr = virt_to_phys((void *)gvaddr); ^ drivers//virtio/virtio_balloon.c:110:39: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] virtqueue_add_chain(vq, id, 0, NULL, (void *)gpaddr, NULL); ^ drivers//virtio/virtio_balloon.c: In function 'virtballoon_page_hinting': >> drivers//virtio/virtio_balloon.c:115:15: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] u64 gvaddr = (u64)hypervisor_pagelist; ^ vim +107 drivers//virtio/virtio_balloon.c 101 102 #ifdef CONFIG_KVM_FREE_PAGE_HINTING 103 static void tell_host_one_page(struct virtio_balloon *vb, struct virtqueue *vq, 104 u64 gvaddr, int len) 105 { 106 unsigned int id = VIRTQUEUE_DESC_ID_INIT; > 107 u64 gpaddr = virt_to_phys((void *)gvaddr); 108 109 virtqueue_add_chain_desc(vq, gpaddr, len, &id, &id, 0); 110 virtqueue_add_chain(vq, id, 0, NULL, (void *)gpaddr, NULL); 111 } 112 113 void virtballoon_page_hinting(struct virtio_balloon *vb, int hyper_entries) 114 { > 115 u64 gvaddr = (u64)hypervisor_pagelist; 116 117 vb->num_pfns = hyper_entries; 118 tell_host_one_page(vb, vb->hinting_vq, gvaddr, hyper_entries); 119 } 120 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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