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 X-Spam-Level: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1AB18C2BB40 for ; Tue, 15 Dec 2020 02:17:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD3FF206E9 for ; Tue, 15 Dec 2020 02:17:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726785AbgLOCRJ (ORCPT ); Mon, 14 Dec 2020 21:17:09 -0500 Received: from ozlabs.org ([203.11.71.1]:49669 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726266AbgLOCQc (ORCPT ); Mon, 14 Dec 2020 21:16:32 -0500 Received: by ozlabs.org (Postfix, from userid 1003) id 4Cw20x5ZWFz9sRR; Tue, 15 Dec 2020 13:15:45 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; t=1607998545; bh=HIoL3hYia/VL0H8kxL6qHX8RQtpD9XmN0+Gy2vsT9c0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=a1eIbgUR8izZ8apPi6OAsVBqalg61msyq1wD1KLkArhkC7vAdmdAS17cb/B+XGiWp jnZ6skMXJvFPwVxQq2KWtYBYNCjp+ZdBVksqX/q+xu/6IcPTL+DGNa0lQK9QX9KpMd eHLkop+Fe+3aemWoK7rxsXDWTBAMk70i53x0QzNnkfPsj7+iE+QRjKRDLMk/zVLlWR dPrVU8f7K6tz7iljIYbmoKtqSGc8DVZPqx+kryU/lV8eI1m1OL9oAyasRL9N6ibJF3 NjtCVm4ByCnE/nASHWNADKGa3k/ogFFdYirxOzRfsPCop290p0shx2iF0WTPCqkfn8 FJNGj5C+s9XOw== Date: Tue, 15 Dec 2020 13:15:23 +1100 From: Paul Mackerras To: Leonardo Bras Cc: Michael Ellerman , Benjamin Herrenschmidt , kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/1] powerpc/kvm: Fix mask size for emulated msgsndp Message-ID: <20201215021523.GC2441086@thinks.paulus.ozlabs.org> References: <20201208215707.31149-1-leobras.c@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201208215707.31149-1-leobras.c@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 08, 2020 at 06:57:08PM -0300, Leonardo Bras wrote: > According to ISAv3.1 and ISAv3.0b, the msgsndp is described to split RB in: > msgtype <- (RB) 32:36 > payload <- (RB) 37:63 > t <- (RB) 57:63 > > The current way of getting 'msgtype', and 't' is missing their MSB: > msgtype: ((arg >> 27) & 0xf) : Gets (RB) 33:36, missing bit 32 > t: (arg &= 0x3f) : Gets (RB) 58:63, missing bit 57 > > Fixes this by applying the correct mask. > > Signed-off-by: Leonardo Bras Acked-by: Paul Mackerras