Patch "drm/ttm: Print the memory decryption status just once" has been added to the 6.6-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    drm/ttm: Print the memory decryption status just once

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-ttm-print-the-memory-decryption-status-just-once.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From 27906e5d78248b19bcdfdae72049338c828897bb Mon Sep 17 00:00:00 2001
From: Zack Rusin <zack.rusin at broadcom.com>
Date: Mon, 8 Apr 2024 11:56:05 -0400
Subject: drm/ttm: Print the memory decryption status just once
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Zack Rusin <zack.rusin at broadcom.com>

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 at broadcom.com>
Fixes: 71ce046327cf ("drm/ttm: Make sure the mapped tt pages are decrypted when needed")
Reviewed-by: Christian König <christian.koenig at amd.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: dri-devel at lists.freedesktop.org
Cc: linux-kernel at vger.kernel.org
Cc: <stable at 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 at linuxfoundation.org>
---
 drivers/gpu/drm/ttm/ttm_tt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 578a7c37f00b..d776e3f87064 100644
--- 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);
-- 
2.45.0



Patches currently in stable-queue which might be from zack.rusin at broadcom.com are

queue-6.6/drm-ttm-print-the-memory-decryption-status-just-once.patch
queue-6.6/drm-vmwgfx-fix-legacy-display-unit.patch
queue-6.6/drm-vmwgfx-fix-invalid-reads-in-fence-signaled-events.patch