linux-kernel - Re: [PATCH 05/21] resource: adjust_resource handle resource without parent

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]

Date:	Fri, 18 May 2012 12:06:42 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>,
	David Miller <davem@...emloft.net>, x86 <x86@...nel.org>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 05/21] resource: adjust_resource handle resource without parent

On Fri, May 18, 2012 at 11:54 AM, Yinghai Lu <yinghai@...nel.org> wrote:
> On Fri, May 18, 2012 at 10:12 AM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
>> On Mon, May 7, 2012 at 2:29 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>
>> Where does this case occur?  When do you need to adjust a resource
>> that has no parent?
>
> for unassigned pci bridge from BIOS, before scan busn_res.end is 0xff,
> so you can not insert them, because the bridge could in the middle.
> Have to update the busn_res.end and insert after the bridge is scanned

Does the resource have children in this case?  If it has no parent,
it's not in the resource tree at all, is it?  Is there any reason to
use adjust_resource() rather than just updating res->start and
res->end directly?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/