linux-kernel - Re: Please revert 928bea964827d7824b548c1f8e06eccbbc4d0d7d

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAE9FiQWm7ALPO5k_2nV+fuZw4oNNiw+_PEx8EWkb52ymN+EYUg@mail.gmail.com>
Date:	Fri, 27 Sep 2013 15:56:34 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: Please revert 928bea964827d7824b548c1f8e06eccbbc4d0d7d

On Fri, Sep 27, 2013 at 3:38 PM, Benjamin Herrenschmidt
<benh@...nel.crashing.org> wrote:
> On Fri, 2013-09-27 at 14:54 -0700, Yinghai Lu wrote:
>> On Fri, Sep 27, 2013 at 2:46 PM, Benjamin Herrenschmidt
>> <benh@...nel.crashing.org> wrote:
>>
>> > Wouldn't it be better to simply have pci_enable_device() always set bus
>> > master on a bridge? I don't see any case where it makes sense to have
>> > an enabled bridge without the master bit set on it...
>>
>> Do you mean attached?
>
> So this patch works and fixes the problem. I think it makes the whole
> thing more robust and should be applied.

good.

>
> I still don't know why the bridge doesn't get enabled properly without
> it yes, tracking it down (the machine in question takes a LONG time to
> reboot :-)

ok, please if you are ok attached one instead. It will print some warning about
driver skipping pci_set_master, so we can catch more problem with drivers.

Thanks

Yinghai

Download attachment "pci_set_master_again_v2.patch" of type "application/octet-stream" (1420 bytes)