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Date:	Sun, 26 Oct 2014 12:25:08 +0000
From:	"Skidanov, Alexey" <>
To:	"" <>
Subject: 32 bit user space compatibility


Running 32 bit user space needs some work to be done with ioctls. I understand that there are two options to implement:
1.       Use only fixed size types. Pad IOCTLS params to multiple of 64 bits - simple; don't know if it covers all compatibility issues; 
2.       32 bit compatibility layer (through compat_ioctl, just like many drivers in kernel implement)  - just a little bit simple code with some translations; really covers all issues;
Which one is preferred by kernel community?

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