Fixes: 651ec926fc1 "anv: Add support for 48-bit addresses" Tested-by: Grazvydas Ignotas <nota...@gmail.com>
On Sun, Apr 23, 2017 at 1:55 AM, Jason Ekstrand <ja...@jlekstrand.net> wrote: > This fixes rendering corruptions in DOOM. Hopefully, it will also make > Jenkins a bit more stable as we've been seeing some random failures and > GPU hangs ever since turning on 48bit. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100620 > Cc: "17.1" <mesa-sta...@lists.freedesktop.org> > --- > src/intel/vulkan/anv_allocator.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/src/intel/vulkan/anv_allocator.c > b/src/intel/vulkan/anv_allocator.c > index 78327df..28bfac4 100644 > --- a/src/intel/vulkan/anv_allocator.c > +++ b/src/intel/vulkan/anv_allocator.c > @@ -994,6 +994,22 @@ anv_scratch_pool_alloc(struct anv_device *device, > struct anv_scratch_pool *pool, > > anv_bo_init_new(&bo->bo, device, size); > > + /* Even though the Scratch base pointers in 3DSTATE_*S are 64 bits, > they > + * are still relative to the general state base address. When we emit > + * STATE_BASE_ADDRESS, we set general state base address to 0 and the > size > + * to the maximum (1 page under 4GB). This allows us to just place the > + * scratch buffers anywhere we wish in the bottom 32 bits of address > space > + * and just set the scratch base pointer in 3DSTATE_*S using a > relocation. > + * However, in order to do so, we need to ensure that the kernel does > not > + * place the scratch BO above the 32-bit boundary. > + * > + * NOTE: Technically, it can't go "anywhere" because the top page is > off > + * limits. However, it will never end up getting placed that high > because > + * the surface state and general state buffers will get placed first > and > + * the kernel likes to work top-down. > + */ > + bo->bo.flags &= ~EXEC_OBJECT_SUPPORTS_48B_ADDRESS; > + > /* Set the exists last because it may be read by other threads */ > __sync_synchronize(); > bo->exists = true; > -- > 2.5.0.400.gff86faf > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev >
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