From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 118B7CA5FFC for ; Tue, 6 Oct 2026 11:53:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 53AFA10E029; Tue, 6 Oct 2026 11:53:58 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="LNqUMrpZ"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id D2CD210E023 for ; Tue, 6 Oct 2026 11:53:56 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id C024B6022C; Tue, 6 Oct 2026 11:53:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB03D1F000FF; Tue, 6 Oct 2026 11:53:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791287635; bh=pm06+NkcSQVhTckq2o+B0jIj5R0QdwE0Dppd+dgufN8=; h=From:To:Cc:Subject:Date; b=LNqUMrpZgBVOLJSZ/W/MvA4gaS5eLGfbM29hyELkMy+C5gL5fIj5/sPuiqbsz8aih 9qgYrjPfyC56shoPoNkk9g2LjskPA9VsvwCaA06BAMQ2Wq4tCxRRxFa/lmGSP79d40 KZG2pz9bEKE9qjcnB8tiHaUiRsT3kFM0DoTrIqM16un8ROE/XYT9+QSkekALTXLSPb S+9ZPun9DMuNdGc2pbrEwyqXU4KKAIvkSd3QG89YJCnjpuIijhArElc5rKbsHpNZrV ZT5kfam8A7V2HNBUDeBv1gcrCX8MUtK+lO8bPjkP4hWPrtM1qM+goOMZAAaPEXtStX n8tb3ZBR1R83g== From: Thorsten Blum To: Danilo Krummrich , Alice Ryhl , Alexandre Courbot , David Airlie , Simona Vetter , Eliot Courtney , Gary Guo Cc: Thorsten Blum , nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] gpu: nova-core: gsp: use KVVec::zeroed() for payload buffers Date: Tue, 6 Oct 2026 13:53:06 +0200 Message-ID: <20261006115311.92873-3-blum@kernel.org> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1795; i=blum@kernel.org; h=from:subject; bh=VetweA1aMKnwvp/z6U6ngiU40fTiotUsT0isaYLH2nU=; b=owGbwMvMwCUWt7pQ4caZUj3G02pJDFlHHqpfm9o2s1SW41RCvNtzc4OZK9ed9M3b7zqP06r87 tW1ByKndZSyMIhxMciKKbI8mPVjhm9pTeUmk4idMHNYmUCGMHBxCsBEntsyMryLCCg+cU22NvP3 /SN7Li282nR136Q5XhvuBvzeorBkyqMljAwX5jv53jeXUeh3NdnItW/miuMLok6XW/NaK82Os5E sf8UNAA== X-Developer-Key: i=blum@kernel.org; a=openpgp; fpr=1D60735E8AEF3BE473B69D84733678FD8DFEEAD4 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Use KVVec::zeroed() instead of KVVec::from_elem() to allocate and zero-initialize the command and continuation payload buffers. Also use KVVec::zeroed() in the test helper read_payload(). Signed-off-by: Thorsten Blum --- drivers/gpu/nova-core/gsp/cmdq/continuation.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/nova-core/gsp/cmdq/continuation.rs b/drivers/gpu/nova-core/gsp/cmdq/continuation.rs index 05e904f18097..9ef19f28de97 100644 --- a/drivers/gpu/nova-core/gsp/cmdq/continuation.rs +++ b/drivers/gpu/nova-core/gsp/cmdq/continuation.rs @@ -106,9 +106,9 @@ pub(super) fn new(command: C) -> Result { if command.size() > MAX_CMD_SIZE { let mut command_payload = - KVVec::::from_elem(0u8, payload_len.min(Self::MAX_FIRST_PAYLOAD), GFP_KERNEL)?; + KVVec::zeroed(payload_len.min(Self::MAX_FIRST_PAYLOAD), GFP_KERNEL)?; let mut continuation_payload = - KVVec::::from_elem(0u8, payload_len - command_payload.len(), GFP_KERNEL)?; + KVVec::zeroed(payload_len - command_payload.len(), GFP_KERNEL)?; let mut sbuffer = SBufferIter::new_writer([ command_payload.as_mut_slice(), continuation_payload.as_mut_slice(), @@ -235,7 +235,7 @@ fn init_variable_payload( fn read_payload(cmd: impl CommandToGsp) -> Result> { let len = cmd.variable_payload_len(); - let mut buf = KVVec::from_elem(0u8, len, GFP_KERNEL)?; + let mut buf = KVVec::zeroed(len, GFP_KERNEL)?; let mut sbuf = SBufferIter::new_writer([buf.as_mut_slice(), &mut []]); cmd.init_variable_payload(&mut sbuf)?; drop(sbuf);