From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Jan Kiszka <jan.kiszka@siemens.com>
Message-ID: <a8f62c37-5c4c-a85a-1638-95efb38d55b3@siemens.com>
Date: Tue, 25 Sep 2018 22:16:47 +0200
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Subject: Re: [Xenomai] compat_ioctl?
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To: Richard Weinberger <richard.weinberger@gmail.com>, xenomai@xenomai.org

On 25.09.18 21:30, Richard Weinberger wrote:
> Hi!
> 
> I'm evaluating how to migrate an 32-bit system to x86_64.
> The plan is having just the kernel 64-bit and userspace still 32-bit.
> Since we have plenty of custom kernel drivers which are used by the
> real-time application,
> I wonder whether Xenomai has a concept like Linux's compat_ioctl()?
> Somehow I have to convert data when userspace does ioctl() to 64-bit
> kernel drivers.

Yes, this exists in Xenomai / RTDM as well, see e.g. the drivers under 
kernel/drivers/ipc.

Jan

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