From: Julien Grall <julien.grall@linaro.org>
To: Vijay Kilari <vijay.kilari@gmail.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Prasun Kapoor <Prasun.Kapoor@caviumnetworks.com>,
Vijaya Kumar K <vijaya.kumar@caviumnetworks.com>,
Tim Deegan <tim@xen.org>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
Stefano Stabellini <stefano.stabellini@citrix.com>,
manish.jaggi@caviumnetworks.com
Subject: Re: [RFC PATCH v2 12/22] xen/arm: its: Update irq descriptor for LPIs support
Date: Mon, 30 Mar 2015 16:29:04 +0100 [thread overview]
Message-ID: <55196BC0.1050104@linaro.org> (raw)
In-Reply-To: <CALicx6s_P5ybSDqPFZ4Td4itC7J-3t2pJhV=jMM_4RSR3K_eFw@mail.gmail.com>
On 30/03/15 15:32, Vijay Kilari wrote:
> Stefano suggested to use arch_irq_desc to hold virq and its_device
structure.
> Another question is why another structure irq_guest is created?. Can't we reuse
> arch_irq_desc?
Here is the answer I gave to Stefano when I introduced this new structure:
"I though about it. If we add another field in arch_irq_desc, we will
likely use more memory than xmalloc. This is because most of the
platform doesn't use 1024 interrupts but about 256 interrupts.
As the new field will be a pointer (on ARM64, 8 bytes), that would make
Xen use statically about 8K more.
We could allocate irq_desc dynamically during Xen boot."
This assumption was with only 1 pointer added. As you add 2 pointer, it
will add 16k which is mean increase 15% the current size of the final
Xen binary.
> Is this patch merged?.
Not yet. I sent a v4 2 weeks ago and I expect this patch to be merge as
soon as Ian has time to review it.
Regards,
--
Julien Grall
next prev parent reply other threads:[~2015-03-30 15:29 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-19 14:37 [RFC PATCH v2 00/22] xen/arm: Add ITS support vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 01/22] add linked list apis vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 02/22] Use linked list accessors for page_list helper function vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 03/22] xen/arm: Add bitmap_find_next_zero_area " vijay.kilari
2015-03-20 13:35 ` Julien Grall
2015-03-19 14:37 ` [RFC PATCH v2 04/22] xen/arm: its: Import GICv3 ITS driver from linux vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 05/22] xen/arm: gicv3: Refactor redistributor information vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 06/22] xen/arm: its: Port ITS driver to xen vijay.kilari
2015-03-20 15:06 ` Julien Grall
2015-03-23 12:24 ` Vijay Kilari
2015-03-23 13:27 ` Julien Grall
2015-04-01 11:34 ` Ian Campbell
2015-04-02 8:25 ` Vijay Kilari
2015-04-02 9:25 ` Ian Campbell
2015-04-02 10:05 ` Vijay Kilari
2015-04-02 13:57 ` Julien Grall
2015-03-19 14:37 ` [RFC PATCH v2 07/22] xen/arm: its: Move ITS command encode helper functions vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 08/22] xen/arm: its: Remove unused code in ITS driver vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 09/22] xen/arm: its: Add helper functions to decode ITS Command vijay.kilari
2015-04-01 11:40 ` Ian Campbell
2015-05-11 14:14 ` Vijay Kilari
2015-05-11 14:25 ` Julien Grall
2015-05-11 14:25 ` Julien Grall
2015-05-11 14:36 ` Vijay Kilari
2015-05-11 22:06 ` Julien Grall
2015-03-19 14:37 ` [RFC PATCH v2 10/22] xen/arm: Add helper function to get domain page vijay.kilari
2015-03-20 16:39 ` Julien Grall
2015-03-19 14:37 ` [RFC PATCH v2 11/22] xen/arm: its: Move its_device structure to header file vijay.kilari
2015-03-19 14:37 ` [RFC PATCH v2 12/22] xen/arm: its: Update irq descriptor for LPIs support vijay.kilari
2015-03-20 16:44 ` Julien Grall
2015-03-30 14:32 ` Vijay Kilari
2015-03-30 15:29 ` Julien Grall [this message]
2015-03-19 14:38 ` [RFC PATCH v2 13/22] xen/arm: its: Add virtual ITS command support vijay.kilari
2015-03-21 0:28 ` Julien Grall
2015-03-23 15:52 ` Julien Grall
2015-03-24 11:48 ` Julien Grall
2015-03-30 15:02 ` Vijay Kilari
2015-03-30 15:47 ` Julien Grall
2015-04-01 11:46 ` Ian Campbell
2015-04-01 12:02 ` Julien Grall
2015-04-02 9:13 ` Ian Campbell
2015-04-02 11:06 ` Julien Grall
2015-04-02 11:18 ` Ian Campbell
2015-04-02 13:47 ` Julien Grall
2015-04-28 9:28 ` Vijay Kilari
2015-04-28 9:56 ` Stefano Stabellini
2015-04-28 10:35 ` Julien Grall
2015-04-28 11:36 ` Vijay Kilari
2015-04-28 16:15 ` Julien Grall
2015-04-29 1:44 ` Vijay Kilari
2015-04-29 11:56 ` Julien Grall
2015-04-29 12:12 ` Manish Jaggi
2015-04-29 12:21 ` Julien Grall
2015-04-29 12:33 ` Manish Jaggi
2015-04-29 13:01 ` Julien Grall
2015-04-29 13:08 ` Manish Jaggi
2015-04-29 13:16 ` Julien Grall
2015-04-29 13:35 ` Julien Grall
2015-04-29 16:26 ` Vijay Kilari
2015-04-29 16:30 ` Vijay Kilari
2015-04-29 18:04 ` Julien Grall
2015-04-30 10:02 ` Stefano Stabellini
2015-04-30 10:09 ` Julien Grall
2015-04-30 10:15 ` Stefano Stabellini
2015-04-30 10:20 ` Julien Grall
2015-04-30 10:50 ` Stefano Stabellini
2015-04-30 13:19 ` Vijay Kilari
2015-04-30 13:47 ` Stefano Stabellini
2015-04-30 14:29 ` Julien Grall
2015-05-04 12:58 ` Vijay Kilari
2015-05-04 13:04 ` Julien Grall
2015-05-04 13:27 ` Vijay Kilari
2015-05-04 13:44 ` Julien Grall
2015-05-04 13:54 ` Julien Grall
2015-05-04 15:19 ` Vijay Kilari
2015-05-04 17:00 ` Julien Grall
2015-05-05 10:28 ` Stefano Stabellini
2015-05-05 11:06 ` Vijay Kilari
2015-05-05 11:47 ` Julien Grall
2015-05-05 12:00 ` Vijay Kilari
2015-05-05 12:08 ` Julien Grall
2015-05-05 11:08 ` Julien Grall
2015-05-05 11:45 ` Vijay Kilari
2015-05-05 11:54 ` Stefano Stabellini
2015-05-05 10:39 ` Stefano Stabellini
2015-05-05 11:10 ` Julien Grall
2015-05-05 11:57 ` Stefano Stabellini
2015-05-05 12:03 ` Julien Grall
2015-03-19 14:38 ` [RFC PATCH v2 14/22] xen/arm: its: Add emulation of ITS control registers vijay.kilari
2015-03-24 17:12 ` Julien Grall
2015-03-19 14:38 ` [RFC PATCH v2 15/22] xen/arm: its: Add support to emulate GICR register for LPIs vijay.kilari
2015-03-27 15:46 ` Julien Grall
2015-03-19 14:38 ` [RFC PATCH v2 16/22] xen/arm: its: implement hw_irq_controller " vijay.kilari
2015-03-27 17:02 ` Julien Grall
2015-03-19 14:38 ` [RFC PATCH v2 17/22] xen/arm: its: Map ITS translation space vijay.kilari
2015-03-27 17:07 ` Julien Grall
2015-03-19 14:38 ` [RFC PATCH v2 18/22] xen/arm: its: Dynamic allocation of LPI descriptors vijay.kilari
2015-03-19 14:38 ` [RFC PATCH v2 19/22] xen/arm: its: Support ITS interrupt handling vijay.kilari
2015-03-19 14:38 ` [RFC PATCH v2 20/22] xen/arm: its: Generate ITS node for Dom0 vijay.kilari
2015-03-19 14:38 ` [RFC PATCH v2 21/22] xen/arm: its: Initialize virtual and physical ITS driver vijay.kilari
2015-03-19 14:38 ` [RFC PATCH v2 22/22] xen/arm: its: Generate ITS dt node for DomU vijay.kilari
2015-03-20 13:37 ` [RFC PATCH v2 00/22] xen/arm: Add ITS support Julien Grall
2015-03-20 16:23 ` Julien Grall
2015-03-23 12:37 ` Vijay Kilari
2015-03-23 13:11 ` Julien Grall
2015-03-23 15:18 ` Vijay Kilari
2015-03-23 15:30 ` Julien Grall
2015-03-23 16:09 ` Vijay Kilari
2015-03-23 16:18 ` Julien Grall
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