From: marc.zyngier@arm•com (Marc Zyngier)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 5/7] ARM: EXYNOS4: Add support external GIC
Date: Tue, 11 Oct 2011 14:30:48 +0100 [thread overview]
Message-ID: <4E944508.4050202@arm.com> (raw)
In-Reply-To: <00b901cc8810$8353e730$89fbb590$%youn@samsung.com>
Hi Changwan,
On 11/10/11 13:22, Changhwan Youn wrote:
>> Kukjin, could you please comment on the presence of a common memory
>> region for the distributor? This seem quite odd...
>
> Some registers in Distributor are banked for PPI and SGI support (banked interrupts).
> The register for pending and enable status of these interrupts are
> banked.
Right, that explains it then.
> Marc, I think the approach in your patch is much better than mine if it doesn't hurt
> the performance of other platforms which use the common gic code.
It probably doesn't hurt the general case too much (I expect a bit more
pressure on the d-cache because of the per-cpu stuff, but nothing to be
too worried about).
> I'll re-work the exynos4 interrupt code based on your patch though
> I'm not sure that it's possible to be merged in merge window.
My main concern at the moment is that mainline is broken as far as
EXYNOS4 is concerned (there's a race with the EOI hook), so that should
get fixed first.
Cheers,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2011-10-11 13:30 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-20 7:34 [PATCH 0/7] ARM: EXYNOS4: Adds External GIC Changhwan Youn
2011-06-20 7:34 ` [PATCH 1/7] ARM: EXYNOS4: Add external GIC io memory mapping Changhwan Youn
2011-06-30 5:14 ` MyungJoo Ham
2011-06-30 6:54 ` MyungJoo Ham
2011-07-04 10:25 ` Kukjin Kim
2011-06-20 7:34 ` [PATCH 2/7] ARM: EXYNOS4: modify interrupt mappings for external GIC Changhwan Youn
2011-06-20 7:34 ` [PATCH 3/7] ARM: EXYNOS4: set the affinity of mct1 interrupt using IRQ_MCT_L1 Changhwan Youn
2011-06-20 7:34 ` [PATCH 4/7] ARM: GIC: move gic_chip_data structure declaration to header Changhwan Youn
2011-07-04 9:38 ` Kukjin Kim
2011-06-20 7:34 ` [PATCH 5/7] ARM: EXYNOS4: Add support external GIC Changhwan Youn
2011-10-05 13:55 ` Marc Zyngier
2011-10-06 6:30 ` Kukjin Kim
2011-10-06 8:18 ` Marc Zyngier
2011-10-07 9:44 ` Marc Zyngier
2011-10-07 10:54 ` Kukjin Kim
2011-10-07 15:16 ` Will Deacon
2011-10-10 13:02 ` Marc Zyngier
2011-10-11 12:22 ` Changhwan Youn
2011-10-11 13:30 ` Marc Zyngier [this message]
2011-10-12 5:16 ` Kukjin Kim
2011-11-02 11:15 ` Marc Zyngier
2011-11-02 11:29 ` Kukjin Kim
2011-10-13 11:09 ` Russell King - ARM Linux
2011-10-13 17:51 ` Will Deacon
2011-06-20 7:34 ` [PATCH 6/7] ARM: EXYNOS4: Remove clock event timers using ARM private timers Changhwan Youn
2011-06-20 7:34 ` [PATCH 7/7] ARM: EXYNOS4: Add chained enrty/exit function to uart interrupt handler Changhwan Youn
2011-06-21 0:01 ` [PATCH 0/7] ARM: EXYNOS4: Adds External GIC Kyungmin Park
2011-07-16 6:55 ` Kukjin Kim
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