Re: [PATCH 2/2] MIPS: MSA: bugfix of keeping MSA live context through clone or fork

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To: <linux-mips@xxxxxxxxxxxxxx>, <rusty@xxxxxxxxxxxxxxx>, <alexinbeijing@xxxxxxxxx>, <paul.burton@xxxxxxxxxx>, <david.daney@xxxxxxxxxx>, <alex@xxxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <ralf@xxxxxxxxxxxxxx>, <james.hogan@xxxxxxxxxx>, <markos.chandras@xxxxxxxxxx>, <macro@xxxxxxxxxxxxxx>, <eunb.song@xxxxxxxxxxx>, <manuel.lauss@xxxxxxxxx>, <andreas.herrmann@xxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 2/2] MIPS: MSA: bugfix of keeping MSA live context through clone or fork
From: Leonid Yegoshin <Leonid.Yegoshin@xxxxxxxxxx>
Date: Wed, 20 May 2015 12:23:00 -0700
In-reply-to: <20150519211359.35859.24907.stgit@ubuntu-yegoshin>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

Cancel this, please.

Reason - MSA registers are not supposed to be preserved throughcaller-called interface, including syscall.

In other side, keeping MSA context is expensive.

- Leonid.

References:
- [PATCH 0/2] MIPS: MSA: bugfixes of context switch
  - From: Leonid Yegoshin
- [PATCH 2/2] MIPS: MSA: bugfix of keeping MSA live context through clone or fork
  - From: Leonid Yegoshin

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