[Xen-changelog] [xen master] x86/mm: don't reference hvm_funcs directly

[patchbot@xxxxxxx]

commit 502f75514737f598d1b2134091b364f425bee703
Author:     Wei Liu <wei.liu2@xxxxxxxxxx>
AuthorDate: Fri Aug 17 16:12:22 2018 +0100
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Tue Aug 21 14:57:31 2018 +0100

    x86/mm: don't reference hvm_funcs directly
    
    It is generally not a good idea to reference the internal data
    structure of the another subsystem directly. Introduce a wrapper
    function for the invlpg hook.
    
    No functional change.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/mm.c             | 2 +-
 xen/include/asm-x86/hvm/hvm.h | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 85ccf488f5..8ac4412554 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -5800,7 +5800,7 @@ void paging_invlpg(struct vcpu *v, unsigned long va)
     if ( is_pv_vcpu(v) )
         flush_tlb_one_local(va);
     else
-        hvm_funcs.invlpg(v, va);
+        hvm_invlpg(v, va);
 }
 
 /* Build a 32bit PSE page table using 4MB pages. */
diff --git a/xen/include/asm-x86/hvm/hvm.h b/xen/include/asm-x86/hvm/hvm.h
index 4f720ade4b..146720c356 100644
--- a/xen/include/asm-x86/hvm/hvm.h
+++ b/xen/include/asm-x86/hvm/hvm.h
@@ -454,6 +454,11 @@ static inline int hvm_event_pending(struct vcpu *v)
     return hvm_funcs.event_pending(v);
 }
 
+static inline void hvm_invlpg(struct vcpu *v, unsigned long va)
+{
+    hvm_funcs.invlpg(v, va);
+}
+
 /* These bits in CR4 are owned by the host. */
 #define HVM_CR4_HOST_MASK (mmu_cr4_features & \
     (X86_CR4_VMXE | X86_CR4_PAE | X86_CR4_MCE))
--
generated by git-patchbot for /home/xen/git/xen.git#master

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