Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
KVM: arm64: Add a generic synchronous exception injection primitive
Maybe in a surprising way, we don't currently have a generic way
to inject a synchronous exception at the EL the vcpu is currently
running at.
Extract such primitive from the UNDEF injection code.
Reviewed-by: Ben Horgan <ben.horgan@arm.com>
Reviewed-by: Yuan Yao <yaoyuan@linux.alibaba.com>
Link: https://patch.msgid.link/20260108173233.2911955-4-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
+8
-3
+1
arch/arm64/include/asm/kvm_emulate.h
+1
arch/arm64/include/asm/kvm_emulate.h
···
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void kvm_skip_instr32(struct kvm_vcpu *vcpu);
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void kvm_inject_undefined(struct kvm_vcpu *vcpu);
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+
void kvm_inject_sync(struct kvm_vcpu *vcpu, u64 esr);
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int kvm_inject_serror_esr(struct kvm_vcpu *vcpu, u64 esr);
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int kvm_inject_sea(struct kvm_vcpu *vcpu, bool iabt, u64 addr);
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void kvm_inject_size_fault(struct kvm_vcpu *vcpu);
+7
-3
arch/arm64/kvm/inject_fault.c
+7
-3
arch/arm64/kvm/inject_fault.c
···
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vcpu_write_sys_reg(vcpu, esr, exception_esr_elx(vcpu));
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}
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+
void kvm_inject_sync(struct kvm_vcpu *vcpu, u64 esr)
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+
{
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+
pend_sync_exception(vcpu);
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+
vcpu_write_sys_reg(vcpu, esr, exception_esr_elx(vcpu));
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+
}
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+
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static void inject_undef64(struct kvm_vcpu *vcpu)
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{
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u64 esr = (ESR_ELx_EC_UNKNOWN << ESR_ELx_EC_SHIFT);
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-
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-
pend_sync_exception(vcpu);
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/*
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* Build an unknown exception, depending on the instruction
···
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if (kvm_vcpu_trap_il_is32bit(vcpu))
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esr |= ESR_ELx_IL;
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-
vcpu_write_sys_reg(vcpu, esr, exception_esr_elx(vcpu));
178
+
kvm_inject_sync(vcpu, esr);
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}
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#define DFSR_FSC_EXTABT_LPAE 0x10