KVM: emulate: move init_decode_cache to emulate.c

Core emulator functions all belong in emulator.c,
x86 should have no knowledge of emulator internals

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 14 insertions, 13 deletions

diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index 432447370044..c22bd9af4311 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -409,6 +409,7 @@ bool x86_page_table_writing_insn(struct x86_emulate_ctxt *ctxt);
 #define EMULATION_OK 0
 #define EMULATION_RESTART 1
 #define EMULATION_INTERCEPTED 2
+void init_decode_cache(struct x86_emulate_ctxt *ctxt);
 int x86_emulate_insn(struct x86_emulate_ctxt *ctxt);
 int emulator_task_switch(struct x86_emulate_ctxt *ctxt,
                          u16 tss_selector, int idt_index, int reason,
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 32d3da82da2e..851315d93bf7 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4534,6 +4534,19 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *))
         return X86EMUL_CONTINUE;
 }
 
+void init_decode_cache(struct x86_emulate_ctxt *ctxt)
+{
+        memset(&ctxt->opcode_len, 0,
+               (void *)&ctxt->_regs - (void *)&ctxt->opcode_len);
+
+        ctxt->fetch.start = 0;
+        ctxt->fetch.end = 0;
+        ctxt->io_read.pos = 0;
+        ctxt->io_read.end = 0;
+        ctxt->mem_read.pos = 0;
+        ctxt->mem_read.end = 0;
+}
+
 int x86_emulate_insn(struct x86_emulate_ctxt *ctxt)
 {
         const struct x86_emulate_ops *ops = ctxt->ops;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cd9316786dca..905edf8557e7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4888,19 +4888,6 @@ static void inject_emulated_exception(struct kvm_vcpu *vcpu)
                 kvm_queue_exception(vcpu, ctxt->exception.vector);
 }
 
-static void init_decode_cache(struct x86_emulate_ctxt *ctxt)
-{
-        memset(&ctxt->opcode_len, 0,
-               (void *)&ctxt->_regs - (void *)&ctxt->opcode_len);
-
-        ctxt->fetch.start = 0;
-        ctxt->fetch.end = 0;
-        ctxt->io_read.pos = 0;
-        ctxt->io_read.end = 0;
-        ctxt->mem_read.pos = 0;
-        ctxt->mem_read.end = 0;
-}
-
 static void init_emulate_ctxt(struct kvm_vcpu *vcpu)
 {
         struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;