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KVM: arm/arm64: Log PSTATE for unhandled sysregs 

When KVM traps an unhandled sysreg/coproc access from a guest, it logs
the guest PC. To aid debugging, it would be helpful to know which
exception level the trap came from, along with other PSTATE/CPSR bits,
so let's log the PSTATE/CPSR too.

Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Mark Rutland 2018-12-06 12:31:44 +00:00 committed by Marc Zyngier
parent fb544d1ca6
commit d1878af3a5
2 changed files with 6 additions and 6 deletions
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4
arch/arm/kvm/coproc.c
View File

@ -602,8 +602,8 @@ static int emulate_cp15(struct kvm_vcpu *vcpu,
}
} else {
/* If access function fails, it should complain. */
kvm_err("Unsupported guest CP15 access at: %08lx\n",
*vcpu_pc(vcpu));
kvm_err("Unsupported guest CP15 access at: %08lx [%08lx]\n",
*vcpu_pc(vcpu), *vcpu_cpsr(vcpu));
print_cp_instr(params);
kvm_inject_undefined(vcpu);
}

8
arch/arm64/kvm/sys_regs.c
View File

@ -1912,8 +1912,8 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
WARN_ON(1);
}
kvm_err("Unsupported guest CP%d access at: %08lx\n",
cp, *vcpu_pc(vcpu));
kvm_err("Unsupported guest CP%d access at: %08lx [%08lx]\n",
cp, *vcpu_pc(vcpu), *vcpu_cpsr(vcpu));
print_sys_reg_instr(params);
kvm_inject_undefined(vcpu);
}
@ -2063,8 +2063,8 @@ static int emulate_sys_reg(struct kvm_vcpu *vcpu,
if (likely(r)) {
perform_access(vcpu, params, r);
} else {
kvm_err("Unsupported guest sys_reg access at: %lx\n",
*vcpu_pc(vcpu));
kvm_err("Unsupported guest sys_reg access at: %lx [%08lx]\n",
*vcpu_pc(vcpu), *vcpu_cpsr(vcpu));
print_sys_reg_instr(params);
kvm_inject_undefined(vcpu);
}