[xen master] x86/mtrr: address violations of MISRA C:2012 Directive 4.10

[patchbot@xxxxxxx]

commit ec2587ab4b2af90d9ad09e52f081b3f7517e55eb
Author:     Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>
AuthorDate: Thu Mar 14 13:52:32 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Mar 14 13:52:32 2024 +0100

    x86/mtrr: address violations of MISRA C:2012 Directive 4.10
    
    Add inclusion guard to address violations of
    MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order to
    prevent the contents of a header file being included more than once").
    Mechanical change.
    
    Signed-off-by: Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>
    Signed-off-by: Simone Ballarin <simone.ballarin@xxxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/cpu/mtrr/mtrr.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/cpu/mtrr/mtrr.h b/xen/arch/x86/cpu/mtrr/mtrr.h
index a9741e0cb0..632bf658be 100644
--- a/xen/arch/x86/cpu/mtrr/mtrr.h
+++ b/xen/arch/x86/cpu/mtrr/mtrr.h
@@ -1,6 +1,8 @@
 /*
  * local mtrr defines.
  */
+#ifndef X86_CPU_MTRR_MTRR_H
+#define X86_CPU_MTRR_MTRR_H
 
 #define MTRR_CHANGE_MASK_FIXED     0x01
 #define MTRR_CHANGE_MASK_VARIABLE  0x02
@@ -25,3 +27,5 @@ extern u64 size_or_mask, size_and_mask;
 extern unsigned int num_var_ranges;
 
 void mtrr_state_warn(void);
+
+#endif /* X86_CPU_MTRR_MTRR_H */
--
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