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charset=UTF-8 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External On 10/10/26 10:37, Huang, Honglei wrote: > > > On 10/10/2026 2:53 AM, Dmitry Osipenko wrote: >> 24.09.2026 12:55, Honglei Huang пишет: >>> +int virtio_gpu_userptr_create(struct virtio_gpu_device *vgdev, >>> +                  struct drm_file *file, >>> +                  struct virtio_gpu_object_params *params, >>> +                  struct virtio_gpu_object **bo_ptr) >>> +{ >>> +    struct virtio_gpu_object_userptr *userptr; >>> +    struct virtio_gpu_mem_entry *ents = NULL; >>> +    struct sg_table *sgt; >>> +    struct mm_struct *mm; >>> +    unsigned long lock_limit; >>> +    unsigned long start; >>> +    unsigned long end; >>> +    s64 new_pinned; >>> +    unsigned int nents; >>> +    int ret; >>> + >>> +    *bo_ptr = NULL; >>> + >>> +    if (!params->size || !IS_ALIGNED(params->size, PAGE_SIZE) || >>> +        params->userptr != (unsigned long)params->userptr) >>> +        return -EINVAL; >>> + >>> +    start = params->userptr; >>> +    if (!IS_ALIGNED(start, PAGE_SIZE) || >>> +        check_add_overflow(start, (unsigned long)params->size, &end)) >>> +        return -EINVAL; >> >> There is new vgdev->blob_alignment defining host page size as it may >> differ from guest's page. Will be good to validate both. >> > > Will add blob_alignment check in next version, thanks for the review. Missed that verify_blob() already should be validating the userptr blob_alignment. The patches look good. BTW, previously the extra AMD KFD patches were needed on host kernel, did they land upstream? -- Best regards, Dmitry