Revert "libhsakmt: add XNACK API set/get mode"

This reverts commit 2c1c2cfdf8.
SVM is not ready yet. This was merged by accident.

Change-Id: I7c0d835a0d3a448f2ac1094f818601e5d6363045
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>


[ROCm/ROCR-Runtime commit: a8f4c43fef]

projects/rocr-runtime/src/libhsakmt.ver

@@ -77,8 +77,6 @@ hsaKmtSPMRelease;
 hsaKmtSPMSetDestBuffer;
 hsaKmtSVMSetAttr;
 hsaKmtSVMGetAttr;
-hsaKmtSetXNACKMode;
-hsaKmtGetXNACKMode;
 
 local: *;
 };

projects/rocr-runtime/src/svm.c

@@ -183,42 +183,3 @@ hsaKmtSVMGetAttr(void *start_addr, HSAuint64 size, unsigned int nattr,
 
 	return HSAKMT_STATUS_SUCCESS;
 }
-
-static HSAKMT_STATUS
-hsaKmtSetGetXNACKMode(HSAint32 * enable)
-{
-	struct kfd_ioctl_set_xnack_mode_args args;
-
-	CHECK_KFD_OPEN();
-
-	args.xnack_enabled = *enable;
-
-	if (kmtIoctl(kfd_fd, AMDKFD_IOC_SET_XNACK_MODE, &args)) {
-		if (errno == EPERM) {
-			pr_debug("set mode not supported %s\n",
-				 strerror(errno));
-			return HSAKMT_STATUS_NOT_SUPPORTED;
-		} else if (errno == EBUSY) {
-			pr_debug("kmtIoctl queues not empty %s\n",
-				 strerror(errno));
-		}
-		return HSAKMT_STATUS_ERROR;
-	}
-
-	*enable = args.xnack_enabled;
-
-	return HSAKMT_STATUS_SUCCESS;
-}
-
-HSAKMT_STATUS HSAKMTAPI
-hsaKmtSetXNACKMode(HSAint32 enable)
-{
-	return hsaKmtSetGetXNACKMode(&enable);
-}
-
-HSAKMT_STATUS HSAKMTAPI
-hsaKmtGetXNACKMode(HSAint32 * enable)
-{
-	*enable = -1;
-	return hsaKmtSetGetXNACKMode(enable);
-}