arm/arm64: KVM: Don't panic on failure to properly reset system registers
Failing to properly reset system registers is pretty bad. But not quite as bad as bringing the whole machine down... So warn loudly, but slightly more gracefully. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Christoffer Dall <christoffer.dall@arm.com>
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358b28f09f
Коммит
20589c8cc4
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@ -1450,6 +1450,6 @@ void kvm_reset_coprocs(struct kvm_vcpu *vcpu)
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reset_coproc_regs(vcpu, table, num);
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for (num = 1; num < NR_CP15_REGS; num++)
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if (vcpu_cp15(vcpu, num) == 0x42424242)
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panic("Didn't reset vcpu_cp15(vcpu, %zi)", num);
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WARN(vcpu_cp15(vcpu, num) == 0x42424242,
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"Didn't reset vcpu_cp15(vcpu, %zi)", num);
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}
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@ -2608,7 +2608,9 @@ void kvm_reset_sys_regs(struct kvm_vcpu *vcpu)
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table = get_target_table(vcpu->arch.target, true, &num);
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reset_sys_reg_descs(vcpu, table, num);
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for (num = 1; num < NR_SYS_REGS; num++)
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if (__vcpu_sys_reg(vcpu, num) == 0x4242424242424242)
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panic("Didn't reset __vcpu_sys_reg(%zi)", num);
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for (num = 1; num < NR_SYS_REGS; num++) {
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if (WARN(__vcpu_sys_reg(vcpu, num) == 0x4242424242424242,
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"Didn't reset __vcpu_sys_reg(%zi)\n", num))
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break;
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}
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}
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