commit b4b6d4a02fa8aa8187d426b508fb7f3b69df0dcc
author Andrew Scull <ascull@google.com> Wed Jan 02 15:54:55 2019 +0000
committer Andrew Scull <ascull@google.com> Wed Jan 02 15:54:55 2019 +0000
tree fdf4498bc30cb80757eaf20b46ea866b23141a93

v4.19.13 snapshot.

arch/x86/include/asm/iommu.h

diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h
new file mode 100644
index 0000000..baedab8
--- /dev/null
+++ b/arch/x86/include/asm/iommu.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_IOMMU_H
+#define _ASM_X86_IOMMU_H
+
+extern int force_iommu, no_iommu;
+extern int iommu_detected;
+extern int iommu_pass_through;
+
+/* 10 seconds */
+#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
+
+#endif /* _ASM_X86_IOMMU_H */