linux-kernel - Re: [RFC PATCH] PCI: Add "pci=reassign_all

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] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.21.2201190434230.19178@angie.orcam.me.uk>
Date:   Wed, 19 Jan 2022 04:55:01 +0000 (GMT)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Yao Hongbo <yaohongbo@...ux.alibaba.com>
cc:     Bjorn Helgaas <helgaas@...nel.org>, bhelgaas@...gle.com,
        zhangliguang@...ux.alibaba.com,
        alikernel-developer@...ux.alibaba.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] PCI: Add "pci=reassign_all_bus" boot parameter

On Mon, 17 Jan 2022, Yao Hongbo wrote:

> > Why can't we make Linux smart enough to fix this by itself, without
> > forcing the user to boot with "pci=reassign_all_bus"?
> 
>    You're right, it's better for us to make pci enumeration more smart.
> 
>    But i think it's better to provide an additional option for users on ACPI systems,
> 
> which can quickly distingguish the issues between the BIOS and the OS.

 Even if so, x86 has had `pci=assign-busses' for decades already (i.e. 
from Linux 2.4.6), so why not reuse it for whatever your ACPI platform is?

  Maciej