Re: [v4] powerpc: Export thread_struct.used_vr/used_vsr to user space

Michael, Ben,
On Fri, Jul 08, 2016 at 08:02:42PM +1000, Michael Ellerman wrote:

Benjamin Herrenschmidt [off-list ref] writes:

quoted

On Thu, 2016-07-07 at 23:21 +1000, Benjamin Herrenschmidt wrote:

quoted

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

Simon Guo [off-list ref] writes:

Michael, Ben,
On Fri, Jul 08, 2016 at 08:02:42PM +1000, Michael Ellerman wrote:

quoted

Benjamin Herrenschmidt [off-list ref] writes:
=20

quoted

On Thu, 2016-07-07 at 23:21 +1000, Benjamin Herrenschmidt wrote:

quoted

=C2=A0
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)

=20
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.

Can one of you send a properly formatted and signed-off patch.

cheers