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yaml
---
r: 197641
b: refs/heads/master
c: 2d49ec7
h: refs/heads/master
i:
  197639: eee66d7
v: v3
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Gleb Natapov authored and Avi Kivity committed Apr 25, 2010
1 parent dfce38e commit 5a48b2e
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Showing 4 changed files with 38 additions and 40 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 254d4d48a56925622a5592ad590a738735b66135
refs/heads/master: 2d49ec72d3fab0aa90510a64a973d594c48b1fd1
9 changes: 0 additions & 9 deletions trunk/arch/x86/include/asm/kvm_host.h
Original file line number Diff line number Diff line change
Expand Up @@ -644,8 +644,6 @@ int emulator_write_emulated(unsigned long addr,
unsigned int bytes,
struct kvm_vcpu *vcpu);

unsigned long segment_base(u16 selector);

void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
const u8 *new, int bytes,
Expand Down Expand Up @@ -723,13 +721,6 @@ static inline void kvm_get_idt(struct desc_ptr *table)
asm("sidt %0" : "=m"(*table));
}

static inline unsigned long kvm_read_tr_base(void)
{
u16 tr;
asm("str %0" : "=g"(tr));
return segment_base(tr);
}

#ifdef CONFIG_X86_64
static inline unsigned long read_msr(unsigned long msr)
{
Expand Down
37 changes: 37 additions & 0 deletions trunk/arch/x86/kvm/vmx.c
Original file line number Diff line number Diff line change
Expand Up @@ -634,6 +634,43 @@ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
return true;
}

static unsigned long segment_base(u16 selector)
{
struct desc_ptr gdt;
struct desc_struct *d;
unsigned long table_base;
unsigned long v;

if (!(selector & ~3))
return 0;

native_store_gdt(&gdt);
table_base = gdt.address;

if (selector & 4) { /* from ldt */
u16 ldt_selector = kvm_read_ldt();

if (!(ldt_selector & ~3))
return 0;

table_base = segment_base(ldt_selector);
}
d = (struct desc_struct *)(table_base + (selector & ~7));
v = get_desc_base(d);
#ifdef CONFIG_X86_64
if (d->s == 0 && (d->type == 2 || d->type == 9 || d->type == 11))
v |= ((unsigned long)((struct ldttss_desc64 *)d)->base3) << 32;
#endif
return v;
}

static inline unsigned long kvm_read_tr_base(void)
{
u16 tr;
asm("str %0" : "=g"(tr));
return segment_base(tr);
}

static void vmx_save_host_state(struct kvm_vcpu *vcpu)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
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30 changes: 0 additions & 30 deletions trunk/arch/x86/kvm/x86.c
Original file line number Diff line number Diff line change
Expand Up @@ -223,36 +223,6 @@ static void drop_user_return_notifiers(void *ignore)
kvm_on_user_return(&smsr->urn);
}

unsigned long segment_base(u16 selector)
{
struct desc_ptr gdt;
struct desc_struct *d;
unsigned long table_base;
unsigned long v;

if (!(selector & ~3))
return 0;

native_store_gdt(&gdt);
table_base = gdt.address;

if (selector & 4) { /* from ldt */
u16 ldt_selector = kvm_read_ldt();

if (!(ldt_selector & ~3))
return 0;
table_base = segment_base(ldt_selector);
}
d = (struct desc_struct *)(table_base + (selector & ~7));
v = get_desc_base(d);
#ifdef CONFIG_X86_64
if (d->s == 0 && (d->type == 2 || d->type == 9 || d->type == 11))
v |= ((unsigned long)((struct ldttss_desc64 *)d)->base3) << 32;
#endif
return v;
}
EXPORT_SYMBOL_GPL(segment_base);

u64 kvm_get_apic_base(struct kvm_vcpu *vcpu)
{
if (irqchip_in_kernel(vcpu->kvm))
Expand Down

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