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arm: KVM: Add Virtual Abort injection helper

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Now that we're able to context switch the HCR.VA bit, let's
introduce a helper that injects an Abort into a vcpu.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Marc Zyngier 2016-09-06 14:02:09 +01:00 committed by Christoffer Dall
parent 1f7e378d12
commit bfb78b5c98
2 changed files with 13 additions and 0 deletions
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1
arch/arm/include/asm/kvm_emulate.h
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@ -43,6 +43,7 @@ static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, u8 reg_num,
bool kvm_condition_valid32(const struct kvm_vcpu *vcpu); bool kvm_condition_valid32(const struct kvm_vcpu *vcpu);
void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr); void kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr);
void kvm_inject_undefined(struct kvm_vcpu *vcpu); void kvm_inject_undefined(struct kvm_vcpu *vcpu);
void kvm_inject_vabt(struct kvm_vcpu *vcpu);
void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);

12
arch/arm/kvm/emulate.c
View File

@ -303,3 +303,15 @@ void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr)
{ {
inject_abt(vcpu, true, addr); inject_abt(vcpu, true, addr);
} }
/**
* kvm_inject_vabt - inject an async abort / SError into the guest
* @vcpu: The VCPU to receive the exception
*
* It is assumed that this code is called from the VCPU thread and that the
* VCPU therefore is not currently executing guest code.
*/
void kvm_inject_vabt(struct kvm_vcpu *vcpu)
{
vcpu_set_hcr(vcpu, vcpu_get_hcr(vcpu) | HCR_VA);
}