[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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