[Xen-changelog] [xen master] x86/HVM: constify VMFUNC emulation hook

[patchbot@xxxxxxx]

commit 6d9d597713ad8ef1d83d6479f5864818a177db20
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Jan 3 09:44:43 2017 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jan 3 09:44:43 2017 +0100

    x86/HVM: constify VMFUNC emulation hook
    
    ... to clarify that the register state does not get altered (behind the
    back of the emulator).
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vmx.c    | 2 +-
 xen/include/asm-x86/hvm/hvm.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 68db0cb..15d66a2 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2006,7 +2006,7 @@ static void vmx_vcpu_update_vmfunc_ve(struct vcpu *v)
     vmx_vmcs_exit(v);
 }
 
-static int vmx_vcpu_emulate_vmfunc(struct cpu_user_regs *regs)
+static int vmx_vcpu_emulate_vmfunc(const struct cpu_user_regs *regs)
 {
     int rc = X86EMUL_EXCEPTION;
     struct vcpu *curr = current;
diff --git a/xen/include/asm-x86/hvm/hvm.h b/xen/include/asm-x86/hvm/hvm.h
index 9817646..8c95c08 100644
--- a/xen/include/asm-x86/hvm/hvm.h
+++ b/xen/include/asm-x86/hvm/hvm.h
@@ -208,7 +208,7 @@ struct hvm_function_table {
     void (*altp2m_vcpu_update_p2m)(struct vcpu *v);
     void (*altp2m_vcpu_update_vmfunc_ve)(struct vcpu *v);
     bool_t (*altp2m_vcpu_emulate_ve)(struct vcpu *v);
-    int (*altp2m_vcpu_emulate_vmfunc)(struct cpu_user_regs *regs);
+    int (*altp2m_vcpu_emulate_vmfunc)(const struct cpu_user_regs *regs);
 
     /*
      * Parameters and callbacks for hardware-assisted TSC scaling,
--
generated by git-patchbot for /home/xen/git/xen.git#master

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