drm/ttm: Print the memory decryption status just once

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

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 578a7c37f00bd7a3c8a5f1d5e93d4cd80fdc6cc9..d776e3f87064fa2e86387fb69a0570259ac95fe7 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);