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:	Thu, 23 Aug 2012 01:02:55 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Marcelo Tosatti <mtosatti@...hat.com>,
	Gleb Natapov <gleb@...hat.com>, Avi Kivity <avi@...hat.com>
Subject: Re: [ 40/46] KVM: PIC: call ack notifiers for irqs that are dropped
 form irr

On Sun, 2012-08-19 at 20:59 -0700, Greg Kroah-Hartman wrote:
> From: Greg KH <gregkh@...uxfoundation.org>
> 
> 3.5-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Gleb Natapov <gleb@...hat.com>
> 
> (cherry picked from commit aea218f3cbbcaac249b6b2c98930a00d6d931f1e)
> 
> After commit 242ec97c358256 PIT interrupts are no longer delivered after
> PIC reset. It happens because PIT injects interrupt only if previous one
> was acked, but since on PIC reset it is dropped from irr it will never
> be delivered and hence acknowledged. Fix that by calling ack notifier on
> PIC reset.
[...]

Based on the commit blamed for the regression, I think this is needed
for 3.4 as well.

Ben.

-- 
Ben Hutchings
Experience is what causes a person to make new mistakes instead of old ones.

Download attachment "signature.asc" of type "application/pgp-signature" (829 bytes)

Powered by blists - more mailing lists