[Intel-gfx] [PATCH v3] tests/gem_reg_read: Extend and check for valid 36b counter

[Damien Lespiau]

On Thu, Jul 16, 2015 at 12:24:19PM +0100, Chris Wilson wrote:
> On Thu, Jul 16, 2015 at 01:19:09PM +0200, Michał Winiarski wrote:
> > When reading the timestamp register with single 64b read, we are observing
> > invalid values on x86_64:
> > 
> >     [f = valid counter value | X = garbage]
> > 
> >     i386:   0x0000000fffffffff
> >     x86_64: 0xffffffffXXXXXXXX
> > 
> > Test checks if the counter is moving and increasing.
> > Add a check to see if we can use (reg | 1) flag to get a proper 36b timestamp,
> > shifting the value on x86_64 if we can't.
> > 
> > v2: More iterations of monotonic test, comments, minor fixups (Chris)
> > v3: Skip tests if reg_read is not supported
> > 
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Signed-off-by: Michał Winiarski <michal.winiarski at intel.com>
> 
> Lgtm,
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

Pushed! thanks for the patch and review.

-- 
Damien