Hi Marek,
it looks like the hardware sign extends bit 47 into bits 48-63. E.g.
0x8000 gets extended to 0xffff8000.
Christian.
Am 03.02.2018 um 03:02 schrieb Marek Olšák:
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.leichtzumer...@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.koe...@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
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