Hi Christian,
How does this work with 48-bit addresses that the 3D engine uses? It
can't set 0xffff8000 for the high bits. It's trimmed to 0x8000.
Thanks,
Marek
On Sun, Jan 7, 2018 at 10:11 AM, Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
> Retire the low range on Vega10 this frees up everything below 0xffff800000000000 for HMM.
>
> v2: keep the 32bit range working.
>
> Signed-off-by: Christian König <christian.koenig at amd.com>
> ---
> amdgpu/amdgpu_device.c | 18 ++++++++++++++----
> 1 file changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/amdgpu/amdgpu_device.c b/amdgpu/amdgpu_device.c
> index d7077184..a0d01727 100644
> --- a/amdgpu/amdgpu_device.c
> +++ b/amdgpu/amdgpu_device.c
> @@ -264,13 +264,23 @@ int amdgpu_device_initialize(int fd,
> goto cleanup;
> }
>
> - start = dev->dev_info.virtual_address_offset;
> - max = MIN2(dev->dev_info.virtual_address_max, 0x100000000ULL);
> + if (dev->dev_info.high_va_offset && dev->dev_info.high_va_max) {
> + start = dev->dev_info.high_va_offset;
> + max = dev->dev_info.high_va_max;
> + } else {
> + start = dev->dev_info.virtual_address_offset;
> + max = dev->dev_info.virtual_address_max;
> + }
> +
> + max = MIN2(max, (start & ~0xffffffff) + 0x100000000ULL);
> amdgpu_vamgr_init(&dev->vamgr_32, start, max,
> dev->dev_info.virtual_address_alignment);
>
> - start = MAX2(dev->dev_info.virtual_address_offset, 0x100000000ULL);
> - max = MAX2(dev->dev_info.virtual_address_max, 0x100000000ULL);
> + start = max;
> + if (dev->dev_info.high_va_offset && dev->dev_info.high_va_max)
> + max = dev->dev_info.high_va_max;
> + else
> + max = dev->dev_info.virtual_address_max;
> amdgpu_vamgr_init(&dev->vamgr, start, max,
> dev->dev_info.virtual_address_alignment);
>
> --
> 2.11.0
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
