[Xen-devel] [PATCH 04/34] x86/mm: don't reference hvm_funcs directly

[Wei Liu <wei.liu2@xxxxxxxxxx>]

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>
---
 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 85ccf48..8ac4412 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 4f720ad..146720c 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))
-- 
git-series 0.9.1

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