From: wuyun.wu@huawei.com (Yun Wu (Abel))
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] irqchip: gicv3-its: allocate proper size for DT
Date: Sat, 31 Jan 2015 09:57:06 +0800 [thread overview]
Message-ID: <54CC3672.4050406@huawei.com> (raw)
In-Reply-To: <54CBD715.9040000@arm.com>
On 2015/1/31 3:10, Marc Zyngier wrote:
> On 30/01/15 07:46, Yun Wu wrote:
>> A hardware implementation may be designed to search the device
>> table (DT) using a direct mapping between device ID and memory
>> address, and in this scenario a single page, currently allocated
>> for DT in ITS driver, will be probably not enough.
>>
>> This patch will try best to get this addressed by enlarging DT
>> size with a limitation of MAX_ORDER pages.
>>
>> Signed-off-by: Yun Wu <wuyun.wu@huawei.com>
>
> A similar patch has been posted already (and is already in my queue):
>
> https://git.kernel.org/cgit/linux/kernel/git/maz/arm-platforms.git/commit/?h=irq/gic-fixes&id=4be3de2af2a58476f84d678f3e8a3596f23f80d5
>
Oh, now I see it. How about allocating a order of MAX_ORDER pages and
throwing out a warning if the number of device id bits exceeds maximum
order kernel supports, instead of letting the ITS fail in probing.
Thanks,
Abel
WARNING: multiple messages have this Message-ID (diff)
From: "Yun Wu (Abel)" <wuyun.wu@huawei.com>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: "tglx@linutronix.de" <tglx@linutronix.de>,
"jason@lakedaemon.net" <jason@lakedaemon.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 1/5] irqchip: gicv3-its: allocate proper size for DT
Date: Sat, 31 Jan 2015 09:57:06 +0800 [thread overview]
Message-ID: <54CC3672.4050406@huawei.com> (raw)
In-Reply-To: <54CBD715.9040000@arm.com>
On 2015/1/31 3:10, Marc Zyngier wrote:
> On 30/01/15 07:46, Yun Wu wrote:
>> A hardware implementation may be designed to search the device
>> table (DT) using a direct mapping between device ID and memory
>> address, and in this scenario a single page, currently allocated
>> for DT in ITS driver, will be probably not enough.
>>
>> This patch will try best to get this addressed by enlarging DT
>> size with a limitation of MAX_ORDER pages.
>>
>> Signed-off-by: Yun Wu <wuyun.wu@huawei.com>
>
> A similar patch has been posted already (and is already in my queue):
>
> https://git.kernel.org/cgit/linux/kernel/git/maz/arm-platforms.git/commit/?h=irq/gic-fixes&id=4be3de2af2a58476f84d678f3e8a3596f23f80d5
>
Oh, now I see it. How about allocating a order of MAX_ORDER pages and
throwing out a warning if the number of device id bits exceeds maximum
order kernel supports, instead of letting the ITS fail in probing.
Thanks,
Abel
next prev parent reply other threads:[~2015-01-31 1:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-30 7:46 [PATCH 0/5] enhance configuring an ITS Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 7:46 ` [PATCH 1/5] irqchip: gicv3-its: allocate proper size for DT Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 19:10 ` Marc Zyngier
2015-01-30 19:10 ` Marc Zyngier
2015-01-31 1:57 ` Yun Wu (Abel) [this message]
2015-01-31 1:57 ` Yun Wu (Abel)
2015-01-30 7:46 ` [PATCH 2/5] irqchip: gicv3-its: zero itt before handling to hardware Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 19:24 ` Marc Zyngier
2015-01-30 19:24 ` Marc Zyngier
2015-01-30 7:46 ` [PATCH 3/5] irqchip: gicv3-its: use 64KB page as default granule Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 19:18 ` Marc Zyngier
2015-01-30 19:18 ` Marc Zyngier
2015-01-31 1:33 ` Yun Wu (Abel)
2015-01-31 1:33 ` Yun Wu (Abel)
2015-01-30 7:46 ` [PATCH 4/5] irqchip: gicv3-its: define macros for GITS_CTLR fields Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 7:46 ` [PATCH 5/5] irqchip: gicv3-its: add support for power down Yun Wu
2015-01-30 7:46 ` Yun Wu
2015-01-30 19:23 ` Marc Zyngier
2015-01-30 19:23 ` Marc Zyngier
2015-01-31 1:43 ` Yun Wu (Abel)
2015-01-31 1:43 ` Yun Wu (Abel)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=54CC3672.4050406@huawei.com \
--to=wuyun.wu@huawei.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.