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 D980BFF885E for ; Sun, 26 Apr 2026 06:48:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1DE1C10E529; Sun, 26 Apr 2026 06:48:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="qDCeBpWx"; dkim-atps=neutral Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by gabe.freedesktop.org (Postfix) with ESMTP id 7CA3B10E165 for ; Sat, 25 Apr 2026 18:17:42 +0000 (UTC) Received: by linux.microsoft.com (Postfix, from userid 1216) id ADD5320B7165; Sat, 25 Apr 2026 11:17:42 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com ADD5320B7165 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1777141062; bh=nNYqv+mnIIySo0kNUnZOcffgMeHet80rqcnW+qxxHek=; h=From:To:Cc:Subject:Date:From; b=qDCeBpWxZRE1+JCx4ltYkGovaBNRhPzE2TzfMQUBHVYxgAZPokZIt5wgFVQHC423i euZwk37JMBhObzISmEwubaoEA3PQBxJDTz4tTqWljbTVJ3d3jY3OQM5/iZmfbNS2sq k33j5ipGYe6C1bqGMFgMZUxsgbFml8UZB20DtEBg= From: Hamza Mahfooz To: linux-kernel@vger.kernel.org Cc: "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Stefano Garzarella , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Himadri Pandya , Michael Kelley , linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, netdev@vger.kernel.org, Saurabh Sengar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Deepak Rawat , dri-devel@lists.freedesktop.org, Hamza Mahfooz , stable@kernel.vger.org Subject: [PATCH 1/2] hv_sock: fix ARM64 support Date: Sat, 25 Apr 2026 11:17:18 -0700 Message-ID: <20260425181719.1538483-1-hamzamahfooz@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Sun, 26 Apr 2026 06:47:14 +0000 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" VMBUS ring buffers must be page aligned. Therefore, the current value of 24K presents a challenge on ARM64 kernels (with 64K pages). So, use VMBUS_RING_SIZE() to ensure they are always aligned and large enough to hold all of the relevant data. Cc: stable@kernel.vger.org Fixes: 77ffe33363c0 ("hv_sock: use HV_HYP_PAGE_SIZE for Hyper-V communication") Signed-off-by: Hamza Mahfooz --- net/vmw_vsock/hyperv_transport.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c index 069386a74557..40f09b23efa3 100644 --- a/net/vmw_vsock/hyperv_transport.c +++ b/net/vmw_vsock/hyperv_transport.c @@ -375,10 +375,10 @@ static void hvs_open_connection(struct vmbus_channel *chan) } else { sndbuf = max_t(int, sk->sk_sndbuf, RINGBUFFER_HVS_SND_SIZE); sndbuf = min_t(int, sndbuf, RINGBUFFER_HVS_MAX_SIZE); - sndbuf = ALIGN(sndbuf, HV_HYP_PAGE_SIZE); + sndbuf = VMBUS_RING_SIZE(sndbuf); rcvbuf = max_t(int, sk->sk_rcvbuf, RINGBUFFER_HVS_RCV_SIZE); rcvbuf = min_t(int, rcvbuf, RINGBUFFER_HVS_MAX_SIZE); - rcvbuf = ALIGN(rcvbuf, HV_HYP_PAGE_SIZE); + rcvbuf = VMBUS_RING_SIZE(rcvbuf); } chan->max_pkt_size = HVS_MAX_PKT_SIZE; -- 2.54.0