linux-kernel - [PATCH 13/25] KVM: emulate: move init_decode

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Message-Id: <1402318753-23362-14-git-send-email-pbonzini@redhat.com>
Date:	Mon,  9 Jun 2014 14:59:01 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	bdas@...hat.com, gleb@...nel.org, Bandan Das <bsd@...hat.com>
Subject: [PATCH 13/25] KVM: emulate: move init_decode_cache to emulate.c

From: Bandan Das <bsd@...hat.com>

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

Signed-off-by: Bandan Das <bsd@...hat.com>
Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/include/asm/kvm_emulate.h |  1 +
 arch/x86/kvm/emulate.c             | 13 +++++++++++++
 arch/x86/kvm/x86.c                 | 13 -------------
 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 f596976a3ab2..b8456835eddb 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -436,6 +436,7 @@ 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 eaf0853ffaf9..34a04ba26c23 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4608,6 +4608,19 @@ 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 02678c2f3721..401bdef24d54 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4952,19 +4952,6 @@ 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;
-- 
1.8.3.1


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