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Subject[RFC PATCH v2 1/6] KVM: emulate: move init_decode_cache to emulate.c
Date
Core emulator functions all belong in emulator.c,
x86 should have no knowledge of emulator internals

Signed-off-by: Bandan Das <bsd@redhat.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 d085f73..ad4cca8 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 8ca292c..8e2b866 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -4550,6 +4550,19 @@ 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 4fad05d..122410d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4951,19 +4951,6 @@ 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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