[xen staging] x86/traps: Move percpu_traps_init() into traps-setup.c

[patchbot@xxxxxxx]

commit 2e26220e52cc46e49105f7e4a74ac11b1b8129b8
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Tue Dec 31 15:56:34 2024 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Mar 21 11:52:39 2025 +0000

    x86/traps: Move percpu_traps_init() into traps-setup.c
    
    Move the declaration from asm/system.h into asm/traps.h.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/acpi/power.c         |  1 +
 xen/arch/x86/include/asm/system.h |  1 -
 xen/arch/x86/include/asm/traps.h  |  2 ++
 xen/arch/x86/setup.c              |  1 +
 xen/arch/x86/smpboot.c            |  1 +
 xen/arch/x86/traps-setup.c        | 15 +++++++++++++++
 xen/arch/x86/traps.c              |  8 --------
 7 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/xen/arch/x86/acpi/power.c b/xen/arch/x86/acpi/power.c
index fe70257864..3196a33b19 100644
--- a/xen/arch/x86/acpi/power.c
+++ b/xen/arch/x86/acpi/power.c
@@ -31,6 +31,7 @@
 #include <asm/spec_ctrl.h>
 #include <asm/tboot.h>
 #include <asm/trampoline.h>
+#include <asm/traps.h>
 
 #include <public/platform.h>
 
diff --git a/xen/arch/x86/include/asm/system.h 
b/xen/arch/x86/include/asm/system.h
index 73cb16ca68..73364056c7 100644
--- a/xen/arch/x86/include/asm/system.h
+++ b/xen/arch/x86/include/asm/system.h
@@ -266,7 +266,6 @@ static inline int local_irq_is_enabled(void)
 void trap_init(void);
 void init_idt_traps(void);
 void load_system_tables(void);
-void percpu_traps_init(void);
 void subarch_percpu_traps_init(void);
 
 #endif
diff --git a/xen/arch/x86/include/asm/traps.h b/xen/arch/x86/include/asm/traps.h
index 01ef362edc..825f7441c8 100644
--- a/xen/arch/x86/include/asm/traps.h
+++ b/xen/arch/x86/include/asm/traps.h
@@ -7,6 +7,8 @@
 #ifndef ASM_TRAP_H
 #define ASM_TRAP_H
 
+void percpu_traps_init(void);
+
 const char *vector_name(unsigned int vec);
 
 #endif /* ASM_TRAP_H */
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 5daa70fc0f..67463482dc 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -56,6 +56,7 @@
 #include <asm/spec_ctrl.h>
 #include <asm/tboot.h>
 #include <asm/trampoline.h>
+#include <asm/traps.h>
 
 #include <xsm/xsm.h>
 
diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index b63a9ce13e..54207e6d88 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -41,6 +41,7 @@
 #include <asm/tboot.h>
 #include <asm/time.h>
 #include <asm/trampoline.h>
+#include <asm/traps.h>
 
 uint32_t __ro_after_init trampoline_phys;
 enum ap_boot_method __read_mostly ap_boot_method = AP_BOOT_NORMAL;
diff --git a/xen/arch/x86/traps-setup.c b/xen/arch/x86/traps-setup.c
index 3ee2831958..fa78a35a7e 100644
--- a/xen/arch/x86/traps-setup.c
+++ b/xen/arch/x86/traps-setup.c
@@ -3,5 +3,20 @@
  * Configuration of event handling for all CPUs.
  */
 #include <asm/idt.h>
+#include <asm/msr.h>
+#include <asm/system.h>
+#include <asm/traps.h>
 
 DEFINE_PER_CPU_READ_MOSTLY(idt_entry_t *, idt);
+
+/*
+ * Set up per-CPU linkage registers for exception, interrupt and syscall
+ * handling.
+ */
+void percpu_traps_init(void)
+{
+    subarch_percpu_traps_init();
+
+    if ( cpu_has_xen_lbr )
+        wrmsrl(MSR_IA32_DEBUGCTLMSR, IA32_DEBUGCTLMSR_LBR);
+}
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index a89f4f4f34..29d7e4123f 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -1864,14 +1864,6 @@ void asmlinkage do_entry_CP(struct cpu_user_regs *regs)
     panic("CONTROL-FLOW PROTECTION FAULT: #CP[%04x] %s\n", ec, err);
 }
 
-void percpu_traps_init(void)
-{
-    subarch_percpu_traps_init();
-
-    if ( cpu_has_xen_lbr )
-        wrmsrl(MSR_IA32_DEBUGCTLMSR, IA32_DEBUGCTLMSR_LBR);
-}
-
 void nocall entry_PF(void);
 
 void __init init_idt_traps(void)
--
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