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From: Simon Guo <wei.guo.simon@gmail.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Laurent Dufour <ldufour@linux.vnet.ibm.com>,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	Paul Mackerras <paulus@samba.org>,
	Kees Cook <keescook@chromium.org>,
	Rashmica Gupta <rashmicy@gmail.com>,
	"cyrilbur@gmail.com" <cyrilbur@gmail.com>
Subject: Re: [v4] powerpc: Export thread_struct.used_vr/used_vsr to user space
Date: Fri, 15 Jul 2016 15:15:46 +0800	[thread overview]
Message-ID: <20160715071546.GA5290@simonLocalRHEL7.x64> (raw)
In-Reply-To: <577f7a45.568f6b0a.bd0eb.4aa8SMTPIN_ADDED_BROKEN@mx.google.com>

Michael, Ben,
On Fri, Jul 08, 2016 at 08:02:42PM +1000, Michael Ellerman wrote:
> Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:
> 
> > On Thu, 2016-07-07 at 23:21 +1000, Benjamin Herrenschmidt wrote:
> >> 
> >> I think the right fix is that if a restore_sigcontext() has the MSR
> >> bits set,
> >> it should set the corresponding used_* flag.
> >
> > Something like this:
> >
> > (totally untested)
> 
> Simon/Laurent, can you guys test this and let me know if it works for
> your usecase.
> 

Sorry for the late reply. I tested Ben's patch and the fix works for the CRIU
case mentioned before.

Thanks,
Simon

  parent reply	other threads:[~2016-07-15  7:15 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-07  7:49 [PATCH v4] powerpc: Export thread_struct.used_vr/used_vsr to user space wei.guo.simon
2016-07-07 11:15 ` [v4] " Michael Ellerman
2016-07-07 13:12   ` Laurent Dufour
2016-07-07 13:21     ` Benjamin Herrenschmidt
2016-07-07 13:29       ` Benjamin Herrenschmidt
2016-07-08 10:02         ` Michael Ellerman
     [not found]         ` <577f7a45.568f6b0a.bd0eb.4aa8SMTPIN_ADDED_BROKEN@mx.google.com>
2016-07-11 17:39           ` Simon Guo
2016-07-15  7:15           ` Simon Guo [this message]
2016-07-21 10:57             ` Michael Ellerman
     [not found]             ` <5790aa9c.05296b0a.adf58.5901SMTPIN_ADDED_BROKEN@mx.google.com>
2016-07-25  8:52               ` Simon Guo
2016-07-07 13:40       ` Laurent Dufour
2016-07-08  8:26         ` Michael Ellerman
2016-07-08  5:39       ` Simon Guo

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