linux-kernel - Re: [PATCH v2 2/5] ACPI / ARM64: remove usage of BAD_MADT_ENTRY/BAD_MADT_GICC

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Date:	Mon, 24 Aug 2015 11:04:28 +0100
From:	Will Deacon <will.deacon@....com>
To:	Al Stone <ahs3@...hat.com>
Cc:	Al Stone <al.stone@...aro.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"patches@...aro.org" <patches@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCH v2 2/5] ACPI / ARM64: remove usage of
 BAD_MADT_ENTRY/BAD_MADT_GICC_ENTRY

On Thu, Aug 20, 2015 at 05:57:05PM +0100, Al Stone wrote:
> On 08/20/2015 04:13 AM, Will Deacon wrote:
> > On Wed, Aug 19, 2015 at 11:07:25PM +0100, Al Stone wrote:
> >> Now that we have introduced the bad_madt_entry() function, and that
> >> function is being invoked in acpi_table_parse_madt() for us, there
> >> is no longer any need to use the BAD_MADT_ENTRY macro, or in the case
> >> of arm64, the BAD_MADT_GICC_ENTRY, too.
> >>
> >> Signed-off-by: Al Stone <al.stone@...aro.org>
> >> Acked-by: Catalin Marinas <catalin.marinas@....com>
> >> Acked-by: Marc Zyngier <marc.zyngier@....com>
> >> Cc: Will Deacon <will.deacon@....com>
> >> Cc: Thomas Gleixner <tglx@...utronix.de>
> >> Cc: Jason Cooper <jason@...edaemon.net>
> >> ---
> >>  arch/arm64/include/asm/acpi.h | 8 --------
> >>  arch/arm64/kernel/smp.c       | 2 --
> >>  drivers/irqchip/irq-gic.c     | 6 ------
> >>  3 files changed, 16 deletions(-)
> > 
> > How are you planning to merge this (and which kernel are you targetting?)
> > You've got Acks for both arm64 and irqchip, so I guess either of those
> > trees could take it.
> 
> Yeah, this is a little messy.  If I can get into 4.2, that would be nice,
> but not required -- arm64 already has a usable patch for now, and that's
> the only arch affected.  So, 4.3 was my primary target (which is why I
> worked with linux-next for these).
> 
> Which tree?  Yeesh.  1/5 and 5/5 are ACPI only and required for the rest
> to work properly; 2/5 is arm64, 3/5 is ia64, and 4/5 is x86.  ARM folks are
> the only ones to have provided acks or reviews, however.  I guess I was
> assuming this would have to go in via Rafael's ACPI tree since those are
> the key parts -- the arch-specific patches would remove safety checks on
> MADT subtables without replacing them, if they went in before the ACPI
> patches.
> 
> Does that make sense?  What do you think?

Yup, taking it all via Rafael is fine by me. I just didn't want to end
up in a situation where you thought something was going via the arm64
tree but I hadn't queued it.

Will
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