From owner-freebsd-hackers@freebsd.org Thu Oct 26 13:20:32 2017 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DBC20E495D7 for ; Thu, 26 Oct 2017 13:20:32 +0000 (UTC) (envelope-from rb@gid.co.uk) Received: from mx0.gid.co.uk (mx0.gid.co.uk [194.32.164.250]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6A3BF7DBDB for ; Thu, 26 Oct 2017 13:20:31 +0000 (UTC) (envelope-from rb@gid.co.uk) Received: from [194.32.164.27] ([194.32.164.27]) by mx0.gid.co.uk (8.14.2/8.14.2) with ESMTP id v9QDKOaZ045359 for ; Thu, 26 Oct 2017 14:20:24 +0100 (BST) (envelope-from rb@gid.co.uk) From: Bob Bishop Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: hw.pci.realloc_bars Message-Id: Date: Thu, 26 Oct 2017 14:20:23 +0100 To: FreeBSD Hackers X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Oct 2017 13:20:33 -0000 Hi, hw.pci.realloc_bars controls a mechanism that repositions a PCI memory = resource if it can=E2=80=99t be successfully allocated at the default = place. It=E2=80=99s disabled by default - anyone know why? Seems to me that because it only comes into play in an error case it = would be harmless to have it enabled by default. That would have avoided = a recent case where installation on the HPE Gen 10 microserver is tricky = because its VGA suffers from this problem. Thoughts? -- Bob Bishop rb@gid.co.uk