Date: Fri, 29 Jul 2016 11:04:01 -0700 From: Ngie Cooper <yaneurabeya@gmail.com> To: John Baldwin <jhb@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r303497 - head/sys/dev/pci Message-ID: <FDD39CA5-E545-4D72-A2CD-550633B2900E@gmail.com> In-Reply-To: <201607291754.u6THsLl5098040@repo.freebsd.org> References: <201607291754.u6THsLl5098040@repo.freebsd.org>
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> On Jul 29, 2016, at 10:54, John Baldwin <jhb@FreeBSD.org> wrote: > > Author: jhb > Date: Fri Jul 29 17:54:21 2016 > New Revision: 303497 > URL: https://svnweb.freebsd.org/changeset/base/303497 > > Log: > Add a loader tunable (hw.pci.enable_pcie_hp) to disable PCI-e HotPlug. > > Some systems and/or devices (such as riser cards) do not include a > non-compliant implementation of PCI-e HotPlug that can result in devices > not being attached (e.g. the HotPlug code might assume that a card is > being unplugged and will power the slot off and detach it). This > tunable can be set to 0 to disable support for PCI-e HotPlug ignoring > the incorrect HotPlug state on these slots. > > PR: 211081 > Reported by: Sergey Renkas <serg_ic@mail.ru> (SuperMicro X7 riser card) > Reported by: Jeffrey E Pieper <jeffrey.e.pieper@intel.com> > (Intel X520 adapter) > MFC after: 1 week > Relnotes: yes Should this be done on a per-bus basis? Thanks! -Ngie
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