[PATCH v3 17/30] drm/xe: Enable CPU address mirror uAPI

[Matthew Brost <matthew.brost@intel.com>]

Support for CPU address mirror bindings in SRAM fully in place, enable the
implementation.

v3:
 - s/system allocator/CPU address mirror (Thomas)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
 drivers/gpu/drm/xe/xe_svm.c | 10 ++++++++++
 drivers/gpu/drm/xe/xe_vm.c  |  6 ------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_svm.c b/drivers/gpu/drm/xe/xe_svm.c
index 8237b534a65b..3cbf29732249 100644
--- a/drivers/gpu/drm/xe/xe_svm.c
+++ b/drivers/gpu/drm/xe/xe_svm.c
@@ -428,6 +428,16 @@ int xe_svm_handle_pagefault(struct xe_vm *vm, struct xe_vma *vma,
 	return err;
 }
 
+/**
+ * xe_svm_has_mapping() - SVM has mappings
+ * @vm: The VM.
+ * @start: Start address.
+ * @end: End address.
+ *
+ * Check if an address range has SVM mappings.
+ *
+ * Return: True is address range has a SVM mapping, False otherwise
+ */
 bool xe_svm_has_mapping(struct xe_vm *vm, u64 start, u64 end)
 {
 	return drm_gpusvm_has_mapping(&vm->svm.gpusvm, start, end);
diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 613a68498a24..12cbb140404d 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -3020,12 +3020,6 @@ static int vm_bind_ioctl_check_args(struct xe_device *xe, struct xe_vm *vm,
 		u16 pat_index = (*bind_ops)[i].pat_index;
 		u16 coh_mode;
 
-		/* FIXME: Disabling CPU address mirror for now */
-		if (XE_IOCTL_DBG(xe, is_cpu_addr_mirror)) {
-			err = -EOPNOTSUPP;
-			goto free_bind_ops;
-		}
-
 		if (XE_IOCTL_DBG(xe, is_cpu_addr_mirror &&
 				 !xe_vm_in_fault_mode(vm))) {
 			err = -EINVAL;
-- 
2.34.1