linux-kernel - Re: [PATCH v2 00/10] PCI: leak fixes, removable generic PCI host, assorted stuff

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Message-ID: <e15c1cf5-0844-e5f1-d7af-e196207be6d4@mentor.com>
Date:   Thu, 3 May 2018 10:12:54 +0300
From:   Vladimir Zapolskiy <vladimir_zapolskiy@...tor.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC:     Jingoo Han <jingoohan1@...il.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2 00/10] PCI: leak fixes, removable generic PCI host,
 assorted stuff

Hi Jan,

On 04/30/2018 08:48 AM, Jan Kiszka wrote:
> Changes in v2:
>  - patch 1: commit message reworking as suggested by Lorenzo
>  - patch 3-6: split-up as suggested by Bjorn
>  - patch 8: new
>  - patch 10: select PCI_DOMAINS from PCI_HOST_GENERIC, rather than
>    allowing manual choice, as suggested by Lorenzo
> 
> This primarily enables to unbind the generic PCI host controller without
> leaving lots of memory leaks behind. A previous proposal patch 5 was
> rejected because of those issues [1].
> 
> The fixes have been validated in the Jailhouse setup, where we add and
> remove a virtual PCI host controller on hypervisor activation/
> deactivation, with the help of kmemleak.

by chance I was looking into a memleak in of_pci_get_host_bridge_resources(),
so I can give you a number of review tags.

FWIW the state of unfixably broken https://patchwork.kernel.org/patch/9662893/
should be changed to obsoleted/deprecated/rejected.

--
With best wishes,
Vladimir