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-rw-r--r--arch/x86/entry/entry.S22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/entry/entry.S b/arch/x86/entry/entry.S
new file mode 100644
index 000000000..bfb7bcb36
--- /dev/null
+++ b/arch/x86/entry/entry.S
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Common place for both 32- and 64-bit entry routines.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+#include <asm/msr-index.h>
+
+.pushsection .noinstr.text, "ax"
+
+SYM_FUNC_START(entry_ibpb)
+ movl $MSR_IA32_PRED_CMD, %ecx
+ movl $PRED_CMD_IBPB, %eax
+ xorl %edx, %edx
+ wrmsr
+ RET
+SYM_FUNC_END(entry_ibpb)
+/* For KVM */
+EXPORT_SYMBOL_GPL(entry_ibpb);
+
+.popsection