drm/ttm: Print the memory decryption status just once

commit 27906e5d78248b19bcdfdae72049338c828897bb upstream.

Stop printing the TT memory decryption status info each time tt is created
and instead print it just once.

Reduces the spam in the system logs when running guests with SEV enabled.

Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Fixes: 71ce046327cf ("drm/ttm: Make sure the mapped tt pages are decrypted when needed")
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # v5.14+
Link: https://patchwork.freedesktop.org/patch/msgid/20240408155605.1398631-1-zack.rusin@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 43eaffa7faae3b5b5529838eade9acbf185231e4..bf9601351fa35488492fc61eed24131d20e30e28 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -92,7 +92,7 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
         */
        if (bdev->pool.use_dma_alloc && cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT)) {
                page_flags |= TTM_TT_FLAG_DECRYPTED;
-               drm_info(ddev, "TT memory decryption enabled.");
+               drm_info_once(ddev, "TT memory decryption enabled.");
        }
 
        bo->ttm = bdev->funcs->ttm_tt_create(bo, page_flags);