What we call GROWABLE in Mesa corresponds to the HEAP BO flag in the kernel. These buffers cannot be memory mapped in the CPU side at the moment, so make sure they are also marked INVISIBLE.
This allows us to allocate a big heap upfront (16MB) without actually reserving space unless it's needed. Signed-off-by: Tomeu Vizoso <tomeu.viz...@collabora.com> Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzw...@collabora.com> --- src/gallium/drivers/panfrost/pan_drm.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/gallium/drivers/panfrost/pan_drm.c b/src/gallium/drivers/panfrost/pan_drm.c index 6d1e0c08d33d..71eda2d1e328 100644 --- a/src/gallium/drivers/panfrost/pan_drm.c +++ b/src/gallium/drivers/panfrost/pan_drm.c @@ -91,10 +91,16 @@ panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size, /* To maximize BO cache usage, don't allocate tiny BOs */ size = MAX2(size, 4096); + /* GROWABLE BOs cannot be mmapped */ + if (flags & PAN_ALLOCATE_GROWABLE) + assert(flags & PAN_ALLOCATE_INVISIBLE); + unsigned translated_flags = 0; if (screen->kernel_version->version_major > 1 || screen->kernel_version->version_minor >= 1) { + if (flags & PAN_ALLOCATE_GROWABLE) + translated_flags |= PANFROST_BO_HEAP; if (!(flags & PAN_ALLOCATE_EXECUTE)) translated_flags |= PANFROST_BO_NOEXEC; } -- 2.20.1 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev