From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELvj/DieTL1pKbFH2ODeBBlFTz4TxGd8XWSUX59pHxEvq3PpZhrDWLzcTWWAzf+uZh/wbmAM ARC-Seal: i=1; a=rsa-sha256; t=1521649864; cv=none; d=google.com; s=arc-20160816; b=QTLMo9ZFhfu+0agIHwZW0K9kclY95Y0hrTVE9VdDe3xE+HSyjZdfbB+pXKUOaQY5B0 U7gGyjQawbknGKmDHmoGEJTye/5lwBOip182M47N1uKHERaPXojCq0nBKY+hzdKCOCtK NR+i+t0qZZdB9DZEe6L3C71Oi+Y0amaxj0FZEQ5x3O/8n1joMh8gTjMYWuj53vMfJl51 /spyv03wDqWAQsGPyK/mpXtbnykq0RXDeWLpjTEq37qOOIauK0N8DEvr5nFUsbHIHrUG j8vaM+mgGb1mXplcCTYn3DRkKhO9D/v6hTS27c9DS3ZB3foVOb8CB7KlLLJaCbU1YsU2 ZzKg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:organization:references :in-reply-to:date:cc:to:from:subject:message-id :arc-authentication-results; bh=9ACobZ30SYH1hh7KjVAZ1EodkiMxUL3jEeJHlQhwDoM=; b=qkq8iBOkxpVWItOUkGsq00Xy09NiwwaYrBCfVLRg/u+LFV6iICuhXGrBm4usjZQYNN EWL0qn0ROjzJIh26oufUvvOoOrEmgY3Uss+TRuG790c6lbfgEQKfNYq+iSARc9wPRQ4n gep4n/eaTzCPTEfdQxjxg/i4inwgSHgx3mgzEeZeoWmyqrKd4VEUoDR0rfp5B9mw8Ojx nIkPzXfoRVwR03jBTnGCzizF3W0dIdEzNORj59K3qCHj20SJB6Xzu6y0iZ/h1RsrQywP XPB5Xi7u9Y04mbf4A66NNRkNAWliv+Mq8BdPQDVEQErFSYFcjEzyHzZ/gewfb0pqz9mg aYcQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ben.hutchings@codethink.co.uk designates 176.9.8.82 as permitted sender) smtp.mailfrom=ben.hutchings@codethink.co.uk; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=codethink.co.uk Authentication-Results: mx.google.com; spf=pass (google.com: domain of ben.hutchings@codethink.co.uk designates 176.9.8.82 as permitted sender) smtp.mailfrom=ben.hutchings@codethink.co.uk; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=codethink.co.uk Message-ID: <1521649863.23626.130.camel@codethink.co.uk> Subject: Re: 4.9.80 compile failure with X86_VSYSCALL_EMULATION=n due to 9a0be5af From: Ben Hutchings To: Greg Kroah-Hartman , Lennart Sorensen Cc: LKML Date: Wed, 21 Mar 2018 16:31:03 +0000 In-Reply-To: <20180321160424.GF18454@kroah.com> References: <20180212154325.ge4walt2m6u3ef7g@csclub.uwaterloo.ca> <20180321160424.GF18454@kroah.com> Organization: Codethink Ltd. Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.6-1+deb9u1 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1592210444043385757?= X-GMAIL-MSGID: =?utf-8?q?1595565528116333314?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, 2018-03-21 at 17:04 +0100, Greg Kroah-Hartman wrote: > On Mon, Feb 12, 2018 at 10:43:25AM -0500, Lennart Sorensen wrote: > > Commit 9a0be5af added a reference to vsyscall_pgprot in > > arch/x86/mm/kaiser.c but that is undefined if X86_VSYSCALL_EMULATION=n > > which on an embedded system where you know how all your software is > > compiled is quite likely. > > > > Of course the condition is always false with that config so the code > > will never be run, but the compiler is unhappy. > > What is the compiler error?  I have not had any reports of this with all > of the varied builds that we currently run on the stable trees. You already applied a fix for this ("kaiser: fix compile error without vsyscall"). Ben. -- Ben Hutchings Software Developer, Codethink Ltd.