From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:56494 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751599AbdBJNlQ (ORCPT ); Fri, 10 Feb 2017 08:41:16 -0500 Subject: Patch "Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback"" has been added to the 4.4-stable tree To: torvalds@linux-foundation.org, gregkh@linuxfoundation.org, nix.or.die@gmail.com, rruslich@cisco.com, tglx@linutronix.de Cc: , From: Date: Fri, 10 Feb 2017 14:36:43 +0100 Message-ID: <1486733803160@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback" to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: revert-x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From d966564fcdc19e13eb6ba1fbe6b8101070339c3d Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 8 Feb 2017 18:08:29 -0800 Subject: Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback" From: Linus Torvalds commit d966564fcdc19e13eb6ba1fbe6b8101070339c3d upstream. This reverts commit 020eb3daaba2857b32c4cf4c82f503d6a00a67de. Gabriel C reports that it causes his machine to not boot, and we haven't tracked down the reason for it yet. Since the bug it fixes has been around for a longish time, we're better off reverting the fix for now. Gabriel says: "It hangs early and freezes with a lot RCU warnings. I bisected it down to : > Ruslan Ruslichenko (1): > x86/ioapic: Restore IO-APIC irq_chip retrigger callback Reverting this one fixes the problem for me.. The box is a PRIMERGY TX200 S5 , 2 socket , 2 x E5520 CPU(s) installed" and Ruslan and Thomas are currently stumped. Reported-and-bisected-by: Gabriel C Cc: Ruslan Ruslichenko Cc: Thomas Gleixner Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/apic/io_apic.c | 2 -- 1 file changed, 2 deletions(-) --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1875,7 +1875,6 @@ static struct irq_chip ioapic_chip __rea .irq_ack = irq_chip_ack_parent, .irq_eoi = ioapic_ack_level, .irq_set_affinity = ioapic_set_affinity, - .irq_retrigger = irq_chip_retrigger_hierarchy, .flags = IRQCHIP_SKIP_SET_WAKE, }; @@ -1887,7 +1886,6 @@ static struct irq_chip ioapic_ir_chip __ .irq_ack = irq_chip_ack_parent, .irq_eoi = ioapic_ir_ack_level, .irq_set_affinity = ioapic_set_affinity, - .irq_retrigger = irq_chip_retrigger_hierarchy, .flags = IRQCHIP_SKIP_SET_WAKE, }; Patches currently in stable-queue which might be from torvalds@linux-foundation.org are queue-4.4/revert-x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch queue-4.4/arc-brown-paper-bag-bug-in-unaligned-access-delay-slot-fixup.patch