linux-kernel - Re: [PATCH v2] Remove deprecated IRQF

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: <CAD3Xx4JCL7Gt9SEoumiKSvmQOL-JQmg0Qth5wRE7COFZ-Oap8g@mail.gmail.com>
Date:	Mon, 9 Mar 2015 18:24:29 +0100
From:	Valentin Rothberg <valentinrothberg@...il.com>
To:	balbi@...com
Cc:	akpm@...ux-foundation.org, Jonathan Corbet <corbet@....net>,
	Ralf Baechle <ralf@...ux-mips.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Paul Bolle <pebolle@...cali.nl>, Jiri Kosina <jkosina@...e.cz>,
	Hannes Reinecke <hare@...e.de>, Ewan Milne <emilne@...hat.com>,
	Christoph Hellwig <hch@....de>,
	Hongliang Tao <taohl@...ote.com>,
	Huacai Chen <chenhc@...ote.com>, Nishanth Menon <nm@...com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Tony Lindgren <tony@...mide.com>,
	Afzal Mohammed <afzal@...com>, Keerthy <j-keerthy@...com>,
	Zhou Wang <wangzhou1@...ilicon.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Quentin Lambert <lambert.quentin@...il.com>,
	Arnd Bergmann <arnd@...db.de>, Ingo Molnar <mingo@...nel.org>,
	Eyal Perry <eyalpe@...lanox.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mips@...ux-mips.org, iss_storagedev@...com,
	linux-mtd@...ts.infradead.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v2] Remove deprecated IRQF_DISABLED flag entirely

On Mon, Mar 9, 2015 at 5:52 PM, Felipe Balbi <balbi@...com> wrote:
> Hi,
>
> On Thu, Mar 05, 2015 at 03:23:08PM +0100, Valentin Rothberg wrote:
>> The IRQF_DISABLED is a NOOP and has been scheduled for removal since
>> Linux v2.6.36 by commit 6932bf37bed4 ("genirq: Remove IRQF_DISABLED from
>> core code").
>>
>> According to commit e58aa3d2d0cc ("genirq: Run irq handlers with
>> interrupts disabled") running IRQ handlers with interrupts enabled can
>> cause stack overflows when the interrupt line of the issuing device is
>> still active.
>>
>> This patch ends the grace period for IRQF_DISABLED (i.e., SA_INTERRUPT
>> in older versions of Linux) and removes the definition and all remaining
>> usages of this flag.
>>
>> Signed-off-by: Valentin Rothberg <valentinrothberg@...il.com>
>> ---
>> The bigger hunk in Documentation/scsi/ncr53c8xx.txt is removed entirely
>> as IRQF_DISABLED is gone now; the usage in older kernel versions
>> (including the old SA_INTERRUPT flag) should be discouraged.  The
>> trouble of using IRQF_SHARED is a general problem and not specific to
>> any driver.
>>
>> I left the reference in Documentation/PCI/MSI-HOWTO.txt untouched since
>> it has already been removed in linux-next by commit b0e1ee8e1405
>> ("MSI-HOWTO.txt: remove reference on IRQF_DISABLED").
>>
>> All remaining references are changelogs that I suggest to keep.
>>
>> Changelog
>>
>> v2: Correct previous change to drivers/mtd/nand/hisi504_nand.c that
>> broke compilation.  Reported by Dan Carpenter.
>> ---
>>  drivers/usb/isp1760/isp1760-core.c   |  3 +--
>>  drivers/usb/isp1760/isp1760-udc.c    |  4 ++--
>
> I have a commit in my tree for isp1760:
>
> https://git.kernel.org/cgit/linux/kernel/git/balbi/usb.git/commit/?h=testing/fixes&id=80b4a0f8feeb6ee7fa4430a2b4ae1155ed923bd2

I am sorry, but I did not receive an email that it has been applied.
Andrew asked me to do this patch, so I replied to the one you
mentioned to avoid this conflict:

http://comments.gmane.org/gmane.linux.kernel/1896211

Kind regards,
 Valentin
--
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/