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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 F137EFDEE33 for ; Thu, 23 Apr 2026 17:24:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=BhxQfSaEdm48BO6beZPKAs6raZHeeUDyJtb3UwUvNww=; b=ogmiQMDVLWwTPtgWDgBVApF9vM WaLgmAt9uff7eJDHYJd0ongbWPnK8aXR+v4yu5bVRxozW6Xlj7vlneOstK9HAWMVmzCMnSdnJqkSj M1mw87N6DrhSCnlndFIRSBaNZeExIz5sj/CeA6Eb2h5KdjnJtlHIWXTjT7j4DlDEg+QuUjLIym7d+ 7youkKi7swx3uhaZNMF9T2pTBzC2x5EVvRx8b+TOh44ElVdayNT/kXd946EH7MQWwEUK3RTKy0i9a RPlDW0AEUXnIzAf0v1EW8RPBrk/HB8z2DjKlroB4Gltk3Asjx2c9+v5ipHy/fKvqXMYRxdiMoBtvK H6R1cong==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFxmR-0000000C2P0-2mTc; Thu, 23 Apr 2026 17:23:59 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFxmL-0000000C2KD-1CW7 for linux-arm-kernel@lists.infradead.org; Thu, 23 Apr 2026 17:23:54 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id A9A6F4092E; Thu, 23 Apr 2026 17:23:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7302C2BCAF; Thu, 23 Apr 2026 17:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776965032; bh=i1zlfKqoBWN27zTMIh+OOnDw/plffp5P3L7s2aSHSfI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=OFNk6j0KAd1NN8/nvgHQ6Egdms+ZX6699lnUxuVMk9JPdCRyrtnSRIiyg0GLGjUmm qesvgUwzgDwny0MXo2jU7QZ/VaIcsfPC82NZf109I2lyr8ZWL+m4xYUkWf1cLMAuCT ofd1IWRLCi26k48NpsVh0Pah/dXkvVKyrugEnyFFBLzXLM13DzRVl4CFBuuQ0O4XCZ W9uQpFDIreYtGlYeNbAbOmqVo/4JAZRodVcUn3g5N6BV4KG3YbUl7FPDiU9ExqAu/v 6Ei/PWoUBUW4UiLwWUEzj13MDb0mbdM3oy9mfV5jXtIqLTDSXffKtle82za4UBbQA0 Lr7N8qsaccf0g== From: Sudeep Holla Date: Thu, 23 Apr 2026 18:22:53 +0100 Subject: [PATCH 3/8] firmware: arm_ffa: Align RxTx buffer size before mapping MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260423-ffa_fixes-v1-3-61189661affe@kernel.org> References: <20260423-ffa_fixes-v1-0-61189661affe@kernel.org> In-Reply-To: <20260423-ffa_fixes-v1-0-61189661affe@kernel.org> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Jens Wiklander , Sudeep Holla , Sebastian Ene X-Mailer: b4 0.15.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260423_102353_350287_00AFE46C X-CRM114-Status: GOOD ( 11.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Commit 83210251fd70 ("firmware: arm_ffa: Use the correct buffer size during RXTX_MAP") advertises PAGE_ALIGN(rxtx_bufsz) to firmware when mapping the buffers but the driver continues to stores the minimum FF-A buffer size in drv_info->rxtx_bufsz which is used elsewhere in the driver. Align the size before storing it so that the allocation, validation and FFA_RXTX_MAP all use the same buffer size. Fixes: 83210251fd70 ("firmware: arm_ffa: Use the correct buffer size during RXTX_MAP") Cc: Sebastian Ene Link: https://sashiko.dev/#/patchset/20260402113939.930221-1-sebastianene@google.com Signed-off-by: Sudeep Holla --- drivers/firmware/arm_ffa/driver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index e6a051b20cb7..4dec7ca52f8c 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -2063,6 +2063,7 @@ static int __init ffa_init(void) rxtx_bufsz = SZ_4K; } + rxtx_bufsz = PAGE_ALIGN(rxtx_bufsz); drv_info->rxtx_bufsz = rxtx_bufsz; drv_info->rx_buffer = alloc_pages_exact(rxtx_bufsz, GFP_KERNEL); if (!drv_info->rx_buffer) { @@ -2078,7 +2079,7 @@ static int __init ffa_init(void) ret = ffa_rxtx_map(virt_to_phys(drv_info->tx_buffer), virt_to_phys(drv_info->rx_buffer), - PAGE_ALIGN(rxtx_bufsz) / FFA_PAGE_SIZE); + rxtx_bufsz / FFA_PAGE_SIZE); if (ret) { pr_err("failed to register FFA RxTx buffers\n"); goto free_pages; -- 2.43.0