From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>, <rusty@rustcorp.com.au>,
<alexinbeijing@gmail.com>, <paul.burton@imgtec.com>,
<david.daney@cavium.com>, <alex@alex-smith.me.uk>,
<linux-kernel@vger.kernel.org>, <james.hogan@imgtec.com>,
<markos.chandras@imgtec.com>, <macro@linux-mips.org>,
<eunb.song@samsung.com>, <manuel.lauss@gmail.com>,
<andreas.herrmann@caviumnetworks.com>
Subject: Re: [PATCH 1/2] MIPS: MSA: bugfix - disable MSA during thread switch correctly
Date: Fri, 22 May 2015 12:06:08 -0700 [thread overview]
Message-ID: <555F7E20.3040903@imgtec.com> (raw)
In-Reply-To: <555F776E.3070904@imgtec.com>
Ralf,
If there was TIF_USEDMSA in "prev" task then it means that all MSA HW is
in use.
And switch_to() checks this and transfers it to resume() to indicate
that MSA processing should be done.
Macro call "msa_save_all a0" right before disabling MSA in Config5
does a save of MSA registers. If it doesn't cause an exception then it
means that Config5 does exist and Config5.MIPS_CONF5_MSAEN does exist too.
- Leonid.
WARNING: multiple messages have this Message-ID (diff)
From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org, rusty@rustcorp.com.au,
alexinbeijing@gmail.com, paul.burton@imgtec.com,
david.daney@cavium.com, alex@alex-smith.me.uk,
linux-kernel@vger.kernel.org, james.hogan@imgtec.com,
markos.chandras@imgtec.com, macro@linux-mips.org,
eunb.song@samsung.com, manuel.lauss@gmail.com,
andreas.herrmann@caviumnetworks.com
Subject: Re: [PATCH 1/2] MIPS: MSA: bugfix - disable MSA during thread switch correctly
Date: Fri, 22 May 2015 12:06:08 -0700 [thread overview]
Message-ID: <555F7E20.3040903@imgtec.com> (raw)
Message-ID: <20150522190608.B-cf2VGNNXGf--mo6vHIrnJkzR1cvkIprrxdJs129os@z> (raw)
In-Reply-To: <555F776E.3070904@imgtec.com>
Ralf,
If there was TIF_USEDMSA in "prev" task then it means that all MSA HW is
in use.
And switch_to() checks this and transfers it to resume() to indicate
that MSA processing should be done.
Macro call "msa_save_all a0" right before disabling MSA in Config5
does a save of MSA registers. If it doesn't cause an exception then it
means that Config5 does exist and Config5.MIPS_CONF5_MSAEN does exist too.
- Leonid.
next prev parent reply other threads:[~2015-05-22 19:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-19 21:13 [PATCH 0/2] MIPS: MSA: bugfixes of context switch Leonid Yegoshin
2015-05-19 21:13 ` Leonid Yegoshin
2015-05-19 21:13 ` [PATCH 1/2] MIPS: MSA: bugfix - disable MSA during thread switch correctly Leonid Yegoshin
2015-05-19 21:13 ` Leonid Yegoshin
2015-05-21 9:12 ` Paul Burton
2015-05-21 9:12 ` Paul Burton
2015-05-21 16:11 ` Leonid Yegoshin
2015-05-21 16:11 ` Leonid Yegoshin
2015-05-21 16:20 ` [PATCH] MIPS: tidy up FPU context switching Paul Burton
2015-05-21 16:20 ` Paul Burton
2015-05-22 10:42 ` [PATCH v2] " Paul Burton
2015-05-22 10:42 ` Paul Burton
2015-05-22 9:38 ` [PATCH 1/2] MIPS: MSA: bugfix - disable MSA during thread switch correctly Ralf Baechle
2015-05-22 18:37 ` Leonid Yegoshin
2015-05-22 18:37 ` Leonid Yegoshin
2015-05-22 19:06 ` Leonid Yegoshin [this message]
2015-05-22 19:06 ` Leonid Yegoshin
2015-05-22 23:20 ` Ralf Baechle
2015-05-23 0:00 ` Leonid Yegoshin
2015-05-23 0:00 ` Leonid Yegoshin
2015-05-19 21:13 ` [PATCH 2/2] MIPS: MSA: bugfix of keeping MSA live context through clone or fork Leonid Yegoshin
2015-05-19 21:13 ` Leonid Yegoshin
2015-05-20 19:23 ` Leonid Yegoshin
2015-05-20 19:23 ` Leonid Yegoshin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=555F7E20.3040903@imgtec.com \
--to=leonid.yegoshin@imgtec.com \
--cc=alex@alex-smith.me.uk \
--cc=alexinbeijing@gmail.com \
--cc=andreas.herrmann@caviumnetworks.com \
--cc=david.daney@cavium.com \
--cc=eunb.song@samsung.com \
--cc=james.hogan@imgtec.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@linux-mips.org \
--cc=macro@linux-mips.org \
--cc=manuel.lauss@gmail.com \
--cc=markos.chandras@imgtec.com \
--cc=paul.burton@imgtec.com \
--cc=ralf@linux-mips.org \
--cc=rusty@rustcorp.com.au \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox