On Mon, Nov 11, 2013 at 11:19:07AM -0800, Ian Romanick wrote: > From: Ian Romanick <ian.d.roman...@intel.com> > > Systems with little physical memory installed will report less than > 2GiB, and some systems may (hypothetically?) have a larger address space > for the GPU. My IVB still reports 1534. > > Signed-off-by: Ian Romanick <ian.d.roman...@intel.com> > Cc: Daniel Vetter <dan...@ffwll.ch> > Cc: "10.0" <mesa-sta...@lists.freedesktop.org> > --- > src/mesa/drivers/dri/i965/intel_screen.c | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-) > > diff --git a/src/mesa/drivers/dri/i965/intel_screen.c > b/src/mesa/drivers/dri/i965/intel_screen.c > index e39d654..592150b 100644 > --- a/src/mesa/drivers/dri/i965/intel_screen.c > +++ b/src/mesa/drivers/dri/i965/intel_screen.c > @@ -823,10 +823,14 @@ brw_query_renderer_integer(__DRIscreen *psp, int param, > int *value) > /* Once a batch uses more than 75% of the maximum mappable size, we > * assume that there's some fragmentation, and we start doing extra > * flushing, etc. That's the big cliff apps will care about. > - * > - * Can only map 2G onto the GPU through the GTT. > */ > - const unsigned gpu_mappable_megabytes = 2 * 1024 * 3 / 4; > + size_t aper_size; > + size_t mappable_size; > + > + drm_intel_get_aperture_sizes(psp->fd, &mappable_size, &aper_size);
Hm, I haven't seen the (presumably) libdrm patch that adds this yet float by, but you really want to match the uint64_t libdrm uses internally for gtt_size here ... ;-) With that fixed both patches are Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch> I'll look at the wrapper as soon as it hits my inbox. -Daniel > + > + const unsigned gpu_mappable_megabytes = > + (aper_size / (1024 * 1024)) * 3 / 4; > > const long system_memory_pages = sysconf(_SC_PHYS_PAGES); > const long system_page_size = sysconf(_SC_PAGE_SIZE); > -- > 1.8.1.4 > -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
