From: Laurent Vivier <Laurent.Vivier-6ktuUTfB/bM@public.gmane.org>
To: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: [PATCH 1/6] Consolidate the various functions that read and write guest memory
Date: Mon, 30 Jul 2007 11:37:38 +0200 [thread overview]
Message-ID: <46ADB162.6010100@bull.net> (raw)
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emulator_read_std() uses struct kvm_vcpu instead of x86_emulate_ctxt to be
called in place of kvm_read_guest().
Signed-off-by: Laurent Vivier <Laurent.Vivier-6ktuUTfB/bM@public.gmane.org>
--
------------- Laurent.Vivier-6ktuUTfB/bM@public.gmane.org --------------
"Software is hard" - Donald Knuth
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Index: kvm/drivers/kvm/kvm_main.c
===================================================================
--- kvm.orig/drivers/kvm/kvm_main.c 2007-07-30 10:11:01.000000000 +0200
+++ kvm/drivers/kvm/kvm_main.c 2007-07-30 10:11:06.000000000 +0200
@@ -975,9 +975,8 @@
static int emulator_read_std(unsigned long addr,
void *val,
unsigned int bytes,
- struct x86_emulate_ctxt *ctxt)
+ struct kvm_vcpu *vcpu)
{
- struct kvm_vcpu *vcpu = ctxt->vcpu;
void *data = val;
while (bytes) {
@@ -1048,7 +1047,7 @@
memcpy(val, vcpu->mmio_data, bytes);
vcpu->mmio_read_completed = 0;
return X86EMUL_CONTINUE;
- } else if (emulator_read_std(addr, val, bytes, ctxt)
+ } else if (emulator_read_std(addr, val, bytes, vcpu)
== X86EMUL_CONTINUE)
return X86EMUL_CONTINUE;
@@ -1221,7 +1220,7 @@
if (reported)
return;
- emulator_read_std(rip_linear, (void *)opcodes, 4, ctxt);
+ emulator_read_std(rip_linear, (void *)opcodes, 4, ctxt->vcpu);
printk(KERN_ERR "emulation failed but !mmio_needed?"
" rip %lx %02x %02x %02x %02x\n",
Index: kvm/drivers/kvm/x86_emulate.c
===================================================================
--- kvm.orig/drivers/kvm/x86_emulate.c 2007-07-30 10:11:01.000000000 +0200
+++ kvm/drivers/kvm/x86_emulate.c 2007-07-30 10:11:06.000000000 +0200
@@ -420,7 +420,7 @@
#define insn_fetch(_type, _size, _eip) \
({ unsigned long _x; \
rc = ops->read_std((unsigned long)(_eip) + ctxt->cs_base, &_x, \
- (_size), ctxt); \
+ (_size), ctxt->vcpu); \
if ( rc != 0 ) \
goto done; \
(_eip) += (_size); \
@@ -469,10 +469,12 @@
if (op_bytes == 2)
op_bytes = 3;
*address = 0;
- rc = ops->read_std((unsigned long)ptr, (unsigned long *)size, 2, ctxt);
+ rc = ops->read_std((unsigned long)ptr, (unsigned long *)size, 2,
+ ctxt->vcpu);
if (rc)
return rc;
- rc = ops->read_std((unsigned long)ptr + 2, address, op_bytes, ctxt);
+ rc = ops->read_std((unsigned long)ptr + 2, address, op_bytes,
+ ctxt->vcpu);
return rc;
}
@@ -963,7 +965,7 @@
dst.bytes = 8;
if ((rc = ops->read_std(register_address(ctxt->ss_base,
_regs[VCPU_REGS_RSP]),
- &dst.val, dst.bytes, ctxt)) != 0)
+ &dst.val, dst.bytes, ctxt->vcpu)) != 0)
goto done;
register_address_increment(_regs[VCPU_REGS_RSP], dst.bytes);
break;
@@ -1048,7 +1050,7 @@
dst.bytes = 8;
if ((rc = ops->read_std((unsigned long)dst.ptr,
&dst.val, 8,
- ctxt)) != 0)
+ ctxt->vcpu)) != 0)
goto done;
}
register_address_increment(_regs[VCPU_REGS_RSP],
@@ -1171,7 +1173,8 @@
pop_instruction:
if ((rc = ops->read_std(register_address(ctxt->ss_base,
- _regs[VCPU_REGS_RSP]), dst.ptr, op_bytes, ctxt)) != 0)
+ _regs[VCPU_REGS_RSP]), dst.ptr, op_bytes, ctxt->vcpu))
+ != 0)
goto done;
register_address_increment(_regs[VCPU_REGS_RSP], op_bytes);
Index: kvm/drivers/kvm/x86_emulate.h
===================================================================
--- kvm.orig/drivers/kvm/x86_emulate.h 2007-07-30 10:11:01.000000000 +0200
+++ kvm/drivers/kvm/x86_emulate.h 2007-07-30 10:11:06.000000000 +0200
@@ -60,7 +60,7 @@
* @bytes: [IN ] Number of bytes to read from memory.
*/
int (*read_std)(unsigned long addr, void *val,
- unsigned int bytes, struct x86_emulate_ctxt * ctxt);
+ unsigned int bytes, struct kvm_vcpu *vcpu);
/*
* write_std: Write bytes of standard (non-emulated/special) memory.
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