diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a99aff747cc2fee3d24985d4edbc96f0c57b0315..f828096114c3b0f484f7fd777019620c27898b81 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -580,11 +580,11 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
 			dev_info.ids_flags |= AMDGPU_IDS_FLAGS_PREEMPTION;
 
 		vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
+		vm_size -= AMDGPU_VA_RESERVED_SIZE;
 		dev_info.virtual_address_offset = AMDGPU_VA_RESERVED_SIZE;
 		dev_info.virtual_address_max =
 			min(vm_size, AMDGPU_VA_HOLE_START);
 
-		vm_size -= AMDGPU_VA_RESERVED_SIZE;
 		if (vm_size > AMDGPU_VA_HOLE_START) {
 			dev_info.high_va_offset = AMDGPU_VA_HOLE_END;
 			dev_info.high_va_max = AMDGPU_VA_HOLE_END | vm_size;
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index b99c5cfc05648da9aae4081228c13ce547420f12..1945fe84218814675be5eabfe0dc2f763614716d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -469,7 +469,8 @@ static void gmc_v6_0_set_prt(struct amdgpu_device *adev, bool enable)
 
 	if (enable) {
 		uint32_t low = AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT;
-		uint32_t high = adev->vm_manager.max_pfn;
+		uint32_t high = adev->vm_manager.max_pfn -
+			(AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT);
 
 		WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, low);
 		WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, low);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index 1137f395ed667722eb8a5d72d21fbae7d8cae39c..761def04f93f701ce11dd4cf64302a8036429320 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -562,7 +562,8 @@ static void gmc_v7_0_set_prt(struct amdgpu_device *adev, bool enable)
 
 	if (enable) {
 		uint32_t low = AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT;
-		uint32_t high = adev->vm_manager.max_pfn;
+		uint32_t high = adev->vm_manager.max_pfn -
+			(AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT);
 
 		WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, low);
 		WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, low);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index ce1819612d63a315748223d1c5abfd8d8831e878..2489be7ad62b472406a5c1a77206ada7e46f4b1e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -762,7 +762,8 @@ static void gmc_v8_0_set_prt(struct amdgpu_device *adev, bool enable)
 
 	if (enable) {
 		uint32_t low = AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT;
-		uint32_t high = adev->vm_manager.max_pfn;
+		uint32_t high = adev->vm_manager.max_pfn -
+			(AMDGPU_VA_RESERVED_SIZE >> AMDGPU_GPU_PAGE_SHIFT);
 
 		WREG32(mmVM_PRT_APERTURE0_LOW_ADDR, low);
 		WREG32(mmVM_PRT_APERTURE1_LOW_ADDR, low);