After TPR Shadow feature introduced, many TPR access won't cause vmexit, so the ordinary point of catching TPR and updating PPR is insufficient.
This patch updates PPR everytime when possible reading PPR action
occurs.
Signed-off-by: Sheng Yang <[EMAIL PROTECTED]>
---
drivers/kvm/lapic.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/kvm/lapic.c b/drivers/kvm/lapic.c
index 98a3719..b0665fa 100644
--- a/drivers/kvm/lapic.c
+++ b/drivers/kvm/lapic.c
@@ -496,6 +496,7 @@ static u32 __apic_read(struct kvm_lapic *apic,
unsigned int offset)
break;
default:
+ apic_update_ppr(apic);
val = apic_get_reg(apic, offset);
break;
}
@@ -963,6 +964,7 @@ int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu)
if (!apic || !apic_enabled(apic))
return -1;
+ apic_update_ppr(apic);
highest_irr = apic_find_highest_irr(apic);
if ((highest_irr == -1) ||
((highest_irr & 0xF0) <= apic_get_reg(apic, APIC_PROCPRI)))
--
1.5.2
Fix-the-updating-of-PPR-after-TPR-shadow-introduced.patch
Description: Fix-the-updating-of-PPR-after-TPR-shadow-introduced.patch
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