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Mon, 5 Aug 2019 17:22:09 -0400 (EDT) From: Thomas Monjalon To: Vamsi Krishna Attunuru Cc: dev@dpdk.org, Jerin Jacob Kollanukkaran , Nithin Kumar Dabilpuram Date: Mon, 05 Aug 2019 23:22:07 +0200 Message-ID: <1803759.MThDSsQNQm@xps> In-Reply-To: References: <20190802042006.14507-1-vattunuru@marvell.com> <20190802065716.20654-1-vattunuru@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Subject: Re: [dpdk-dev] [PATCH v3 1/1] common/octeontx2: fix unaligned mbox memory accesses X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 02/08/2019 11:55, Jerin Jacob Kollanukkaran: > > From: Vamsi Attunuru > > > > Octeontx2 PMD's mailbox client uses device memory to send messages to > > mailbox server in the admin function Linux kernel driver. > > The device memory used for the mailbox communication needs to be > > qualified as volatile memory type to avoid unaligned device memory > > accesses because of compiler's memory access coalescing. > > > > This patch modifies the mailbox request and responses as volatile type which > > were non-volatile earlier and accessed from unaligned memory addresses > > which resulted in bus errors on Fedora 30 with gcc 9.1.1. > > > > Fixes: 2b71657c8660 ("common/octeontx2: add mbox request and response > > definition") > > > > Signed-off-by: Vamsi Attunuru > > Signed-off-by: Nithin Dabilpuram > > Acked-by: Jerin Jacob > > Thomas, > > Could you merge this patch for rc4. It fixes the bus error with Fedora 30 with gcc 9.1.1. Applied, thanks