linux-kernel - Re: [Devel] [PATCH v4 2/2] acpi, gicv3-its, numa: Adding numa node mapping for gic-its units

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Date:   Mon, 26 Jun 2017 19:45:01 +0200
From:   Robert Richter <rric@...nel.org>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>,
        linux-acpi@...r.kernel.org, devel@...ica.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        lorenzo.pieralisi@....com, jason@...edaemon.net,
        catalin.marinas@....com, jnair@...iumnetworks.com,
        will.deacon@....com, tglx@...utronix.de
Subject: Re: [Devel] [PATCH v4 2/2] acpi, gicv3-its, numa: Adding numa node
 mapping for gic-its units

On 26.06.17 18:43:47, Marc Zyngier wrote:
> On 26/06/17 18:38, Robert Richter wrote:
> > On 22.06.17 15:49:25, Marc Zyngier wrote:
> >> On 22/06/17 07:10, Ganapatrao Kulkarni wrote:
> >>> Add code to parse SRAT ITS Affinity sub table as defined in ACPI 6.2.
> >>> Later in per device probe, ITS devices are mapped to numa node using
> >>> ITS Id to proximity domain mapping.
> >>>
> >>> Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
> >>> ---
> >>>  drivers/irqchip/irq-gic-v3-its.c | 75 +++++++++++++++++++++++++++++++++++++++-
> >>>  1 file changed, 74 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
> >>> index 45ea1933..1c21e01 100644
> >>> --- a/drivers/irqchip/irq-gic-v3-its.c
> >>> +++ b/drivers/irqchip/irq-gic-v3-its.c
> >>> @@ -1833,6 +1833,77 @@ static int __init its_of_probe(struct device_node *node)
> >>>  
> >>>  #define ACPI_GICV3_ITS_MEM_SIZE (SZ_128K)
> >>>  
> >>> +#ifdef CONFIG_ACPI_NUMA
> >>
> >> So given that there is a dependency issue between the irqchip and apcica
> >> trees, I plan on taking this patch with the following change:
> >>
> >> #if defined(CONFIG_ACPI_NUMA) && (ACPI_CA_VERSION >= 0x20170531)
> > 
> > The struct name was changed :/
> > 
> >  s/acpi_srat_its_affinity/acpi_srat_gic_its_affinity/
> > 
> > You need to update this too.
> 
> I changed it when I applied the patch. See
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?h=irq/irqchip-4.13&id=dbd2b826723319eb6e4bee5214f8901e336c06be
> 
> Which is also in tip/irq/core.

Great, thanks for the pointer.

-Robert