Use get_desc_base() and get_desc_limit() to get the base address and
limit in desc_struct.
Cc: Avi Kivity <avi@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
---
arch/x86/kvm/x86.c | 18 +++++-------------
1 files changed, 5 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fe5474a..38d9b53 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -132,8 +132,7 @@ unsigned long segment_base(u16 selector)
table_base = segment_base(ldt_selector);
}
d = (struct desc_struct *)(table_base + (selector & ~7));
- v = d->base0 | ((unsigned long)d->base1 << 16) |
- ((unsigned long)d->base2 << 24);
+ 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;
@@ -3617,11 +3616,8 @@ static void kvm_set_segment(struct kvm_vcpu *vcpu,
static void seg_desct_to_kvm_desct(struct desc_struct *seg_desc, u16 selector,
struct kvm_segment *kvm_desct)
{
- kvm_desct->base = seg_desc->base0;
- kvm_desct->base |= seg_desc->base1 << 16;
- kvm_desct->base |= seg_desc->base2 << 24;
- kvm_desct->limit = seg_desc->limit0;
- kvm_desct->limit |= seg_desc->limit << 16;
+ kvm_desct->base = get_desc_base(seg_desc);
+ kvm_desct->limit = get_desc_limit(seg_desc);
if (seg_desc->g) {
kvm_desct->limit <<= 12;
kvm_desct->limit |= 0xfff;
@@ -3700,11 +3696,7 @@ static int save_guest_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
static u32 get_tss_base_addr(struct kvm_vcpu *vcpu,
struct desc_struct *seg_desc)
{
- u32 base_addr;
-
- base_addr = seg_desc->base0;
- base_addr |= (seg_desc->base1 << 16);
- base_addr |= (seg_desc->base2 << 24);
+ u32 base_addr = get_desc_base(seg_desc);
return vcpu->arch.mmu.gva_to_gpa(vcpu, base_addr);
}
@@ -3993,7 +3985,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason)
}
}
- if (!nseg_desc.p || (nseg_desc.limit0 | nseg_desc.limit << 16) < 0x67) {
+ if (!nseg_desc.p || get_desc_limit(&nseg_desc) < 0x67) {
kvm_queue_exception_e(vcpu, TS_VECTOR, tss_selector & 0xfffc);
return 1;
}
--
1.6.0.6
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