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>
Signed-off-by: Ye Li <ye.li@broadcom.com>
Signed-off-by: Ajay Kaher <ajay.kaher@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 91e179701571e52c8319b392ef6f6c282516a29b..d3190aa66695e7918010ea78ec75d013dced977c 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -90,7 +90,7 @@ 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);