linux-kernel - Re: [PATCH v4 1/2] ACPICA: ACPI 6.2: Add support for new SRAT subtable

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Date:   Thu, 22 Jun 2017 16:27:18 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     "Moore, Robert" <robert.moore@...el.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>,
        "Zheng, Lv" <lv.zheng@...el.com>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "devel@...ica.org" <devel@...ica.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "marc.zyngier@....com" <marc.zyngier@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        "hanjun.guo@...aro.org" <hanjun.guo@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "jason@...edaemon.net" <jason@...edaemon.net>,
        "jnair@...iumnetworks.com" <jnair@...iumnetworks.com>,
        "gpkulkarni@...il.com" <gpkulkarni@...il.com>
Subject: Re: [PATCH v4 1/2] ACPICA: ACPI 6.2: Add support for new SRAT subtable

On Thursday, June 22, 2017 02:13:18 PM Moore, Robert wrote:
> This support is already in the ACPICA code base, but I can't speak to when it will be upstreamed to Linux. Lv would know this.

It should be there in linux-next already AFAICS.

Lorenzo, can you please double check?

Thanks,
Rafael


> > -----Original Message-----
> > From: Lorenzo Pieralisi [mailto:lorenzo.pieralisi@....com]
> > Sent: Thursday, June 22, 2017 6:43 AM
> > To: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>; Zheng, Lv
> > <lv.zheng@...el.com>; Moore, Robert <robert.moore@...el.com>; Rafael J.
> > Wysocki <rjw@...ysocki.net>
> > Cc: linux-acpi@...r.kernel.org; devel@...ica.org; linux-
> > kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> > marc.zyngier@....com; catalin.marinas@....com; will.deacon@....com;
> > hanjun.guo@...aro.org; tglx@...utronix.de; jason@...edaemon.net;
> > jnair@...iumnetworks.com; gpkulkarni@...il.com
> > Subject: Re: [PATCH v4 1/2] ACPICA: ACPI 6.2: Add support for new SRAT
> > subtable
> > 
> > Hi Rafael, Lv, Robert,
> > 
> > On Thu, Jun 22, 2017 at 11:40:11AM +0530, Ganapatrao Kulkarni wrote:
> > > Add GIC ITS Affinity (ACPI 6.2) subtable to SRAT table.
> > >
> > > ACPICA commit 5bc67f63918da249bfe279ee461d152bb3e6f55b
> > > Link: https://github.com/acpica/acpica/commit/5bc67f6
> > >
> > > Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
> > > ---
> > >  include/acpi/actbl1.h | 12 +++++++++++-
> > >  1 file changed, 11 insertions(+), 1 deletion(-)
> > 
> > This patch is fine to me but it is up to you or who sends the ACPICA
> > pull request to send it upstream or give us an ACK so that it can go via
> > irqchip.
> > 
> > We need to know how this commit (and other ACPICA changes) will be sent
> > upstream to handle trees dependencies, please advise it is a bit urgent,
> > thank you.
> > 
> > Lorenzo
> > 
> > > diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index
> > > b4ce55c..253c9db 100644
> > > --- a/include/acpi/actbl1.h
> > > +++ b/include/acpi/actbl1.h
> > > @@ -1192,7 +1192,8 @@ enum acpi_srat_type {
> > >  	ACPI_SRAT_TYPE_MEMORY_AFFINITY = 1,
> > >  	ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY = 2,
> > >  	ACPI_SRAT_TYPE_GICC_AFFINITY = 3,
> > > -	ACPI_SRAT_TYPE_RESERVED = 4	/* 4 and greater are reserved */
> > > +	ACPI_SRAT_TYPE_GIC_ITS_AFFINITY = 4,	/* ACPI 6.2 */
> > > +	ACPI_SRAT_TYPE_RESERVED = 5	/* 5 and greater are reserved */
> > >  };
> > >
> > >  /*
> > > @@ -1260,6 +1261,15 @@ struct acpi_srat_gicc_affinity {
> > >  	u32 clock_domain;
> > >  };
> > >
> > > +/* 4: GIC ITS Affinity (ACPI 6.2) */
> > > +
> > > +struct acpi_srat_its_affinity {
> > > +	struct acpi_subtable_header header;
> > > +	u32 proximity_domain;
> > > +	u16 reserved;
> > > +	u32 its_id;
> > > +};
> > > +
> > >  /* Flags for struct acpi_srat_gicc_affinity */
> > >
> > >  #define ACPI_SRAT_GICC_ENABLED     (1)	/* 00: Use affinity structure
> > */
> > > --
> > > 1.8.1.4
> > >