lkml.org 
[lkml]   [2022]   [Jan]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v1 6/9] drivers: hv: dxgkrnl: Seal the shared resource object when dxgk_share_objects is called.
    Date
    A dxgresource object is a collection of dxgallocation objects.
    The WDDM API allows addition/removal allocations to a resource.
    The WDDM API has limitations on addition/removal of allocations to
    a shared resource. When a resource is "sealed", addition/removal of
    allocations is not allowed.

    Signed-off-by: Iouri Tarassov <iourit@linux.microsoft.com>
    ---
    drivers/hv/dxgkrnl/ioctl.c | 36 ++++++++++++++++++++++++++++--------
    1 file changed, 28 insertions(+), 8 deletions(-)

    diff --git a/drivers/hv/dxgkrnl/ioctl.c b/drivers/hv/dxgkrnl/ioctl.c
    index 2086f7347ba3..97f4d2471ca5 100644
    --- a/drivers/hv/dxgkrnl/ioctl.c
    +++ b/drivers/hv/dxgkrnl/ioctl.c
    @@ -2767,18 +2767,38 @@ dxgk_share_objects(struct dxgprocess *process, void *__user inargs)
    case HMGRENTRY_TYPE_DXGSYNCOBJECT:
    ret = get_object_fd(DXG_SHARED_SYNCOBJECT, shared_syncobj,
    &object_fd);
    - if (ret >= 0)
    - ret =
    - dxgsharedsyncobj_get_host_nt_handle(shared_syncobj,
    - process,
    - handles[0]);
    + if (ret < 0) {
    + pr_err("%s get_object_fd failed for sync object",
    + __func__);
    + goto cleanup;
    + }
    + ret = dxgsharedsyncobj_get_host_nt_handle(shared_syncobj,
    + process,
    + handles[0]);
    + if (ret < 0) {
    + pr_err("%s get_host_nt_handle failed", __func__);
    + goto cleanup;
    + }
    break;
    case HMGRENTRY_TYPE_DXGRESOURCE:
    ret = get_object_fd(DXG_SHARED_RESOURCE, shared_resource,
    &object_fd);
    - if (ret >= 0)
    - ret = dxgsharedresource_get_host_nt_handle(
    - shared_resource, process, handles[0]);
    + if (ret < 0) {
    + pr_err("%s get_object_fd failed for resource",
    + __func__);
    + goto cleanup;
    + }
    + ret = dxgsharedresource_get_host_nt_handle(shared_resource,
    + process, handles[0]);
    + if (ret < 0) {
    + pr_err("%s get_host_res_nt_handle failed", __func__);
    + goto cleanup;
    + }
    + ret = dxgsharedresource_seal(shared_resource);
    + if (ret < 0) {
    + pr_err("%s dxgsharedresource_seal failed", __func__);
    + goto cleanup;
    + }
    break;
    default:
    ret = -EINVAL;
    --
    2.32.0
    \
     
     \ /
      Last update: 2022-01-12 20:57    [W:4.192 / U:0.620 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site