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From 20352d2851d0702e665a42985f9ab52b6c45837e Mon Sep 17 00:00:00 2001
From: Gang Ba <gaba@amd.com>
Date: Wed, 14 Aug 2019 11:00:19 -0400
Subject: [PATCH 3454/4256] drm/amd/amdgpu: Update VM function pointer
When VM state changed and system in large bar mode,
make sure to use CPU update function, otherwise use
SDMA function.
Change-Id: Ibcfada560a00c9aeebfd922ae48de920e44a5866
Signed-off-by: Gang Ba <gaba@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3ed870f294f5..c55e7aba2f99 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2815,6 +2815,13 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
WARN_ONCE((vm->use_cpu_for_update && !amdgpu_gmc_vram_full_visible(&adev->gmc)),
"CPU update of VM recommended only for large BAR system\n");
+ if (vm->use_cpu_for_update)
+ vm->update_funcs = &amdgpu_vm_cpu_funcs;
+ else
+ vm->update_funcs = &amdgpu_vm_sdma_funcs;
+ dma_fence_put(vm->last_update);
+ vm->last_update = NULL;
+
if (vm->pasid) {
unsigned long flags;
--
2.17.1
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