From: Iurii Konovalenko <iurii.konovalenko@globallogic.com>
To: Julien Grall <julien.grall@linaro.org>
Cc: Embedded-pv-devel@lists.xenproject.org,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Size of irq field
Date: Thu, 2 Apr 2015 18:05:18 +0300 [thread overview]
Message-ID: <CABc08z+1KgYoXtG7TZTzokOVqT42tAN3NKSeYhGFp+sV1JufMg@mail.gmail.com> (raw)
Hi, Julien!
During bringing up Xen on Renesas Lager board we faced with problem.
A lot of Xen sources relies on statement, that IRQ number is less then
256 and variables, parameters, fields etc. are of type uint8_t. But we
can have IRQs, that are greater then 255, for example on RCar H2 SoC.
Also, as I saw from one of your latest commits, GICv supports 1020
physical interrupts. As a result, overflow can occur. So it seems
logical to increase all irq staff to uint16_t or uint32_t. We have
local patches for increasing some structures, functions etc.
But before pushing these patches I want to know your opinion, what do
you think about this problem? What type should we use uint16_t or
uint32_t? How to find all places where uint8_t type is used for IRQ?
Best regards.
Iurii Konovalenko | Senior Software Engineer
GlobalLogic
next reply other threads:[~2015-04-02 15:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-02 15:05 Iurii Konovalenko [this message]
2015-04-02 15:19 ` Size of irq field Ian Campbell
2015-04-02 15:34 ` Julien Grall
2015-04-03 12:40 ` Iurii Konovalenko
2015-04-03 13:31 ` Julien Grall
2015-04-14 10:33 ` Ian Campbell
2015-04-14 10:34 ` Julien Grall
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