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hv: vlapic: remove TPR set/get API

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Since we always enable "Use TPR shadow", so operate on TPR will not
trigger VM exit. So remove these APIs.

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Li, Fei1
2019-03-15 00:10:57 +08:00
committed by Eddie Dong
parent 4a683ed10e
commit 40168e73ee
3 changed files with 0 additions and 73 deletions
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51
hypervisor/arch/x86/guest/vlapic.c
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@@ -1181,51 +1181,6 @@ vlapic_calc_dest_lapic_pt(struct acrn_vm *vm, uint64_t *dmask, uint32_t dest, bo
}
}
static void
vlapic_set_tpr(struct acrn_vlapic *vlapic, uint32_t val)
{
struct lapic_regs *lapic = &(vlapic->apic_page);
if (lapic->tpr.v != val) {
dev_dbg(ACRN_DBG_LAPIC,
"vlapic TPR changed from %#x to %#x", lapic->tpr, val);
lapic->tpr.v = val;
vlapic_update_ppr(vlapic);
}
}
static uint32_t
vlapic_get_tpr(const struct acrn_vlapic *vlapic)
{
const struct lapic_regs *lapic = &(vlapic->apic_page);
return lapic->tpr.v;
}
void
vlapic_set_cr8(struct acrn_vlapic *vlapic, uint64_t val)
{
uint32_t tpr;
if ((val & ~0xfUL) != 0U) {
struct acrn_vcpu *vcpu = vlapic->vcpu;
vcpu_inject_gp(vcpu, 0U);
} else {
/* It is safe to narrow val as the higher 60 bits are 0s. */
tpr = (uint32_t)val << 4U;
vlapic_set_tpr(vlapic, tpr);
}
}
uint64_t
vlapic_get_cr8(const struct acrn_vlapic *vlapic)
{
uint32_t tpr;
tpr = vlapic_get_tpr(vlapic);
return ((uint64_t)tpr >> 4UL);
}
static void
vlapic_process_init_sipi(struct acrn_vcpu* target_vcpu, uint32_t mode,
uint32_t icr_low, uint16_t vcpu_id)
@@ -1523,9 +1478,6 @@ vlapic_read(struct acrn_vlapic *vlapic, uint32_t offset_arg, uint64_t *data)
case APIC_OFFSET_VER:
*data = lapic->version.v;
break;
case APIC_OFFSET_TPR:
*data = vlapic_get_tpr(vlapic);
break;
case APIC_OFFSET_APR:
*data = lapic->apr.v;
break;
@@ -1644,9 +1596,6 @@ vlapic_write(struct acrn_vlapic *vlapic, uint32_t offset, uint64_t data)
case APIC_OFFSET_ID:
/* Force APIC ID as read only */
break;
case APIC_OFFSET_TPR:
vlapic_set_tpr(vlapic, data32 & 0xffU);
break;
case APIC_OFFSET_EOI:
vlapic_process_eoi(vlapic);
break;