Date: Sat, 27 Oct 2012 09:43:38 -0700 From: Neel Natu <neelnatu@gmail.com> To: Eitan Adler <eadler@freebsd.org> Cc: "svn-src-projects@freebsd.org" <svn-src-projects@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, Neel Natu <neel@freebsd.org> Subject: Re: svn commit: r242170 - projects/bhyve/usr.sbin/bhyve Message-ID: <4F77FDF1-BA5A-4D9D-9AD6-0812FB027315@gmail.com> In-Reply-To: <CAF6rxg=6%2Bh4RNtaSPGt9NwJw2hn2W3FnJBKOG=qHmKDh6ZorLg@mail.gmail.com> References: <201210270239.q9R2d8Kv064997@svn.freebsd.org> <CAF6rxg=6%2Bh4RNtaSPGt9NwJw2hn2W3FnJBKOG=qHmKDh6ZorLg@mail.gmail.com>
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Hi Eitan, On Oct 27, 2012, at 8:52 AM, Eitan Adler <eadler@freebsd.org> wrote: > On 26 October 2012 22:39, Neel Natu <neel@freebsd.org> wrote: >> Author: neel >> Date: Sat Oct 27 02:39:08 2012 >> New Revision: 242170 >> URL: http://svn.freebsd.org/changeset/base/242170 >>=20 >> Log: >> Ignore PCI configuration accesses to all bus numbers other than PCI bus 0= . >=20 > I'm sorry this is a silly question, but why? >=20 At the moment all the emulated PCI devices are on bus 0. We don't present a PCI device tree hierarchy to the guest with bridges and e= nd-point devices, so everything hangs off bus 0. Prior to this change any access to a PCI bus !=3D 0 got aliased to devices o= n bus 0 which is obviously wrong and tripped up drivers like the QPI driver w= hich start probing backwards from bus 255. Best Neel >=20 > --=20 > Eitan Adler > Source, Ports, Doc committer > Bugmeister, Ports Security teams
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