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Re: [Qemu-devel] [PATCH v2] linux-user: Simplify timerid checks on g_pos
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH v2] linux-user: Simplify timerid checks on g_posix_timers range |
Date: |
Fri, 22 Aug 2014 14:29:48 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:31.0) Gecko/20100101 Thunderbird/31.0 |
On 22.08.14 14:25, Peter Maydell wrote:
> On 22 August 2014 13:12, Alexander Graf <address@hidden> wrote:
>> In Linux, the timer id is a "key" into a hash table that the kernel
>> searches to find its timer. In QEMU it's an offset into an array.
>>
>> In both cases the syscall user receives it as a token from a create
>> function and should treat it as opaque.
>>
>> So in the QEMU case it is unsigned, regardless of what the kernel allows
>> it to be, because it's an array offset.
>
> It's a number between 0 and 32. That doesn't imply that it has
> to be an unsigned variable, and we already have it in a
> signed variable arg1...
Yes, so the end result will be the same. What's the point of this bike
shedding?
Alex
Re: [Qemu-devel] [PATCH v2] linux-user: Simplify timerid checks on g_posix_timers range, Laurent Vivier, 2014/08/22