Patch "Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback"" has been added to the 4.9-stable tree
Subsystems (2)
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 4.9-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-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
d966564fcdc19e13eb6ba1fbe6b8101070339c3dMon Sep 17 00:00:00 2001
From: Linus Torvalds <[email protected]>
Date: Wed, 8 Feb 2017 18:08:29 -0800
Subject: Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback"
From: Linus Torvalds <[email protected]>
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 :
Quoted 2 lines
Ruslan Ruslichenko (1):
x86/ioapic: Restore IO-APICirq_chipretrigger 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.
--- arch/x86/kernel/apic/io_apic.c | 2 -- 1 file changed, 2 deletions(-)
arch/x86/kernel/apic/io_apic.c +0 -2
@@ -1876,7 +1876,6 @@ 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, };
@@ -1888,7 +1887,6 @@ 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 [email protected] are
queue-4.9/revert-x86-ioapic-restore-io-apic-irq_chip-retrigger-callback.patch queue-4.9/arc-brown-paper-bag-bug-in-unaligned-access-delay-slot-fixup.patch