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Message-ID: <843fdfa2-348b-410e-8ff1-84ab86cac17d@amd.com>
Date: Mon, 8 Apr 2024 17:59:31 +0200
From: Christian König <christian.koenig@....com>
To: Zack Rusin <zack.rusin@...adcom.com>, dri-devel@...ts.freedesktop.org
Cc: Broadcom internal kernel review list
<bcm-kernel-feedback-list@...adcom.com>, ian.forbes@...adcom.com,
martin.krastev@...adcom.com, maaz.mombasawala@...adcom.com,
Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] drm/ttm: Print the memory decryption status just once
Am 08.04.24 um 17:56 schrieb Zack Rusin:
> 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.
Do we then really need this in the first place?
Regards,
Christian.
>
> Signed-off-by: Zack Rusin <zack.rusin@...adcom.com>
> Fixes: 71ce046327cf ("drm/ttm: Make sure the mapped tt pages are decrypted when needed")
> Cc: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
> Cc: Christian König <christian.koenig@....com>
> Cc: dri-devel@...ts.freedesktop.org
> Cc: linux-kernel@...r.kernel.org
> Cc: <stable@...r.kernel.org> # v5.14+
> ---
> 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);
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