[PATCH] KVM: selftests: Add missing header file needed by xAPIC IPI tests

[Sean Christopherson <seanjc@google.com>]

From: Peter Shier <pshier@google.com>

Fixes: 678e90a349a4 ("KVM: selftests: Test IPI to halted vCPU in xAPIC while backing page moves")
Cc: Andrew Jones <drjones@redhat.com>
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Peter Shier <pshier@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---

Delta patch taken verbatim from Peter's original submission.  Applying the
original patch directly is mildly annoying due to conflicts with kvm/next
in other files.

 tools/testing/selftests/kvm/include/numaif.h | 55 ++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 tools/testing/selftests/kvm/include/numaif.h

diff --git a/tools/testing/selftests/kvm/include/numaif.h b/tools/testing/selftests/kvm/include/numaif.h
new file mode 100644
index 000000000000..b020547403fd
--- /dev/null
+++ b/tools/testing/selftests/kvm/include/numaif.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * tools/testing/selftests/kvm/include/numaif.h
+ *
+ * Copyright (C) 2020, Google LLC.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ *
+ * Header file that provides access to NUMA API functions not explicitly
+ * exported to user space.
+ */
+
+#ifndef SELFTEST_KVM_NUMAIF_H
+#define SELFTEST_KVM_NUMAIF_H
+
+#define __NR_get_mempolicy 239
+#define __NR_migrate_pages 256
+
+/* System calls */
+long get_mempolicy(int *policy, const unsigned long *nmask,
+		   unsigned long maxnode, void *addr, int flags)
+{
+	return syscall(__NR_get_mempolicy, policy, nmask,
+		       maxnode, addr, flags);
+}
+
+long migrate_pages(int pid, unsigned long maxnode,
+		   const unsigned long *frommask,
+		   const unsigned long *tomask)
+{
+	return syscall(__NR_migrate_pages, pid, maxnode, frommask, tomask);
+}
+
+/* Policies */
+#define MPOL_DEFAULT	 0
+#define MPOL_PREFERRED	 1
+#define MPOL_BIND	 2
+#define MPOL_INTERLEAVE	 3
+
+#define MPOL_MAX MPOL_INTERLEAVE
+
+/* Flags for get_mem_policy */
+#define MPOL_F_NODE	    (1<<0)  /* return next il node or node of address */
+				    /* Warning: MPOL_F_NODE is unsupported and
+				     * subject to change. Don't use.
+				     */
+#define MPOL_F_ADDR	    (1<<1)  /* look up vma using address */
+#define MPOL_F_MEMS_ALLOWED (1<<2)  /* query nodes allowed in cpuset */
+
+/* Flags for mbind */
+#define MPOL_MF_STRICT	     (1<<0) /* Verify existing pages in the mapping */
+#define MPOL_MF_MOVE	     (1<<1) /* Move pages owned by this process to conform to mapping */
+#define MPOL_MF_MOVE_ALL     (1<<2) /* Move every page to conform to mapping */
+
+#endif /* SELFTEST_KVM_NUMAIF_H */
-- 
2.30.0.478.g8a0d178c01-goog