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[209.85.208.178]) by smtp.gmail.com with ESMTPSA id u26-20020a2e855a000000b00244c70fcc08sm2176436ljj.19.2022.03.01.13.04.42 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 01 Mar 2022 13:04:43 -0800 (PST) Received: by mail-lj1-f178.google.com with SMTP id l12so11682631ljh.12 for ; Tue, 01 Mar 2022 13:04:42 -0800 (PST) X-Received: by 2002:a2e:bc17:0:b0:246:32b7:464 with SMTP id b23-20020a2ebc17000000b0024632b70464mr18195828ljf.506.1646168682597; Tue, 01 Mar 2022 13:04:42 -0800 (PST) MIME-Version: 1.0 References: <20220301075839.4156-2-xiam0nd.tong@gmail.com> <202203020135.5duGpXM2-lkp@intel.com> In-Reply-To: From: Linus Torvalds Date: Tue, 1 Mar 2022 13:04:26 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 1/6] Kbuild: compile kernel with gnu11 std To: Arnd Bergmann Cc: kernel test robot , Xiaomeng Tong , kbuild-all@lists.01.org, Jakob Koschel , Linux Kernel Mailing List , Greg Kroah-Hartman , Kees Cook , Jann Horn , Linux Kbuild mailing list , Linux-MM , Netdev Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 398EEC0012 X-Stat-Signature: 5iroytdy13t8ikcabksbs7r7krdnzx95 Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=google header.b=gAEAIwp5; dmarc=none; spf=pass (imf22.hostedemail.com: domain of torvalds@linuxfoundation.org designates 209.85.167.48 as permitted sender) smtp.mailfrom=torvalds@linuxfoundation.org X-HE-Tag: 1646168687-399017 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Mar 1, 2022 at 12:54 PM Arnd Bergmann wrote: > > gcc-11 only shows the one line warning here. What an odd warning. Not even a filename, much less a line number? > The source is > > /* PCI CFG04 status fields */ > #define PCI_CFG04_STAT_BIT 16 > #define PCI_CFG04_STAT 0xffff0000 > #define PCI_CFG04_STAT_66_MHZ (1 << 21) > #define PCI_CFG04_STAT_FBB (1 << 23) > #define PCI_CFG04_STAT_MDPE (1 << 24) > #define PCI_CFG04_STAT_DST (1 << 25) > #define PCI_CFG04_STAT_STA (1 << 27) > #define PCI_CFG04_STAT_RTA (1 << 28) > #define PCI_CFG04_STAT_RMA (1 << 29) > #define PCI_CFG04_STAT_SSE (1 << 30) > #define PCI_CFG04_STAT_PE (1 << 31) > #define KORINA_STAT (PCI_CFG04_STAT_MDPE | \ > PCI_CFG04_STAT_STA | \ > PCI_CFG04_STAT_RTA | \ > PCI_CFG04_STAT_RMA | \ > PCI_CFG04_STAT_SSE | \ > PCI_CFG04_STAT_PE) > #define KORINA_CNFG1 ((KORINA_STAT<<16)|KORINA_CMD) Yeah, looks like that "<< 16" is likely just wrong. I'm guessing that that KORINA_CNFG1 thing either ends up not mattering, or - probably more likely - nobody really used that platform at all. It has had pretty much zero updates sinced 2008. Linus