[PATCH 0/2] arm64: ACPI GTDT watchdog fixes

Catalin Marinas catalin.marinas at arm.com
Fri Apr 23 14:43:35 BST 2021


On Thu, Apr 22, 2021 at 03:23:42PM +0100, Lorenzo Pieralisi wrote:
> On Wed, Apr 21, 2021 at 05:43:15PM +0100, Marc Zyngier wrote:
> > Dann recently reported that his ThunderX machine failed to boot since
> > 64b499d8df40 ("irqchip/gic-v3: Configure SGIs as standard
> > interrupts"), with a not so pretty crash while trying to send an IPI.
> > 
> > It turned out to be caused by a mix of broken firmware and a buggy
> > GTDT watchdog driver. Both have forever been buggy, but the above
> > commit revealed that the error handling path of the driver was
> > probably the worse part of it all.
> > 
> > Anyway, this short series has two goals:
> > - handle broken firmware in a less broken way
> > - make sure that the route cause of the problem can be identified
> >   quickly
> > 
> > Thanks,
> > 
> > 	M.
> > 
> > Marc Zyngier (2):
> >   ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
> >   ACPI: irq: Prevent unregistering of GIC SGIs
> > 
> >  drivers/acpi/arm64/gtdt.c | 10 ++++++----
> >  drivers/acpi/irq.c        |  6 +++++-
> >  2 files changed, 11 insertions(+), 5 deletions(-)
> 
> Patch(2) needs an ACK from Rafael - usually these patches go via
> the ARM64 tree but I don't think it is compulsory for this series.
> 
> Thank you !
> 
> Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>

Thanks Lorenzo.

Rafael, if there are no objections, I'll take these two patches in the
arm64 tree.

-- 
Catalin



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