| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 1 Jan 2008 17:35:39 +0200
From: Avi Kivity <avi@...ranet.com>
To: linux-kernel@...r.kernel.org, kvm-devel@...ts.sourceforge.net
Cc: Sheng Yang <sheng.yang@...el.com>
Subject: [PATCH 13/54] KVM: x86 emulator: Rename 'cr2' to 'memop'
From: Sheng Yang <sheng.yang@...el.com>
Previous patches have removed the dependency on cr2; we can now stop passing
it to the emulator and rename uses to 'memop'.
Signed-off-by: Sheng Yang <sheng.yang@...el.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
drivers/kvm/x86.c | 1 -
drivers/kvm/x86_emulate.c | 18 +++++++++---------
drivers/kvm/x86_emulate.h | 1 -
3 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c
index 5e58156..12f1d6f 100644
--- a/drivers/kvm/x86.c
+++ b/drivers/kvm/x86.c
@@ -1702,7 +1702,6 @@ int emulate_instruction(struct kvm_vcpu *vcpu,
vcpu->emulate_ctxt.vcpu = vcpu;
vcpu->emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
- vcpu->emulate_ctxt.cr2 = cr2;
vcpu->emulate_ctxt.mode =
(vcpu->emulate_ctxt.eflags & X86_EFLAGS_VM)
? X86EMUL_MODE_REAL : cs_l
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 3be506a..22fdf0a 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1127,13 +1127,13 @@ static inline int emulate_grp45(struct x86_emulate_ctxt *ctxt,
static inline int emulate_grp9(struct x86_emulate_ctxt *ctxt,
struct x86_emulate_ops *ops,
- unsigned long cr2)
+ unsigned long memop)
{
struct decode_cache *c = &ctxt->decode;
u64 old, new;
int rc;
- rc = ops->read_emulated(cr2, &old, 8, ctxt->vcpu);
+ rc = ops->read_emulated(memop, &old, 8, ctxt->vcpu);
if (rc != 0)
return rc;
@@ -1148,7 +1148,7 @@ static inline int emulate_grp9(struct x86_emulate_ctxt *ctxt,
new = ((u64)c->regs[VCPU_REGS_RCX] << 32) |
(u32) c->regs[VCPU_REGS_RBX];
- rc = ops->cmpxchg_emulated(cr2, &old, &new, 8, ctxt->vcpu);
+ rc = ops->cmpxchg_emulated(memop, &old, &new, 8, ctxt->vcpu);
if (rc != 0)
return rc;
ctxt->eflags |= EFLG_ZF;
@@ -1211,7 +1211,7 @@ static inline int writeback(struct x86_emulate_ctxt *ctxt,
int
x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
{
- unsigned long cr2 = ctxt->cr2;
+ unsigned long memop = 0;
u64 msr_data;
unsigned long saved_eip = 0;
struct decode_cache *c = &ctxt->decode;
@@ -1226,10 +1226,10 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
saved_eip = c->eip;
if (((c->d & ModRM) && (c->modrm_mod != 3)) || (c->d & MemAbs))
- cr2 = c->modrm_ea;
+ memop = c->modrm_ea;
if (c->src.type == OP_MEM) {
- c->src.ptr = (unsigned long *)cr2;
+ c->src.ptr = (unsigned long *)memop;
c->src.val = 0;
rc = ops->read_emulated((unsigned long)c->src.ptr,
&c->src.val,
@@ -1245,7 +1245,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
if (c->dst.type == OP_MEM) {
- c->dst.ptr = (unsigned long *)cr2;
+ c->dst.ptr = (unsigned long *)memop;
c->dst.bytes = (c->d & ByteOp) ? 1 : c->op_bytes;
c->dst.val = 0;
if (c->d & BitOp) {
@@ -1677,7 +1677,7 @@ twobyte_insn:
&ctxt->eflags);
break;
case 7: /* invlpg*/
- emulate_invlpg(ctxt->vcpu, cr2);
+ emulate_invlpg(ctxt->vcpu, memop);
break;
default:
goto cannot_emulate;
@@ -1848,7 +1848,7 @@ twobyte_special_insn:
break;
}
case 0xc7: /* Grp9 (cmpxchg8b) */
- rc = emulate_grp9(ctxt, ops, cr2);
+ rc = emulate_grp9(ctxt, ops, memop);
if (rc != 0)
goto done;
break;
diff --git a/drivers/kvm/x86_emulate.h b/drivers/kvm/x86_emulate.h
index 644086e..7db91b9 100644
--- a/drivers/kvm/x86_emulate.h
+++ b/drivers/kvm/x86_emulate.h
@@ -145,7 +145,6 @@ struct x86_emulate_ctxt {
/* Linear faulting address (if emulating a page-faulting instruction). */
unsigned long eflags;
- unsigned long cr2;
/* Emulated execution mode, represented by an X86EMUL_MODE value. */
int mode;
--
1.5.3.7
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists