linux-kernel - Re: kvm: nVHE hyp panic at: __kvm_nvhe_kvm_hyp_handle

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Message-ID: <3902208d-8814-46fe-ba98-3db833b9a886@stanley.mountain>
Date: Wed, 12 Feb 2025 14:41:38 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Marc Zyngier <maz@...nel.org>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>, kvmarm@...ts.linux.dev,
	Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>,
	virtualization@...ts.linux.dev, Mark Brown <broonie@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Anders Roxell <anders.roxell@...aro.org>,
	Aishwarya TCV <Aishwarya.TCV@....com>
Subject: Re: kvm: nVHE hyp panic at: __kvm_nvhe_kvm_hyp_handle_sysre

On Tue, Feb 11, 2025 at 11:36:31AM +0000, Marc Zyngier wrote:
> For the crash at hand, which clearly shows nVHE, can you report
> whether the following hack fixes it for you?
> 
> 	M.

No luck, I'm afraid.  It still crashes the same way.

https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/anders/tests/2steTT4f2J8ZJjc3jNJFMuow9Cb

Click on "Logs: html" for the dmesg.

regards,
dan carpenter

> 
> diff --git a/arch/arm64/kvm/hyp/include/hyp/switch.h b/arch/arm64/kvm/hyp/include/hyp/switch.h
> index f838a45665f26..cb57420a07de2 100644
> --- a/arch/arm64/kvm/hyp/include/hyp/switch.h
> +++ b/arch/arm64/kvm/hyp/include/hyp/switch.h
> @@ -556,7 +556,7 @@ static bool kvm_handle_cntxct(struct kvm_vcpu *vcpu)
>  		return false;
>  	}
>  
> -	val = compute_counter_value(ctxt);
> +	val = compute_counter_value(kern_hyp_va(ctxt));
>  
>  	vcpu_set_reg(vcpu, kvm_vcpu_sys_get_rt(vcpu), val);
>  	__kvm_skip_instr(vcpu);
> 
> -- 
> Without deviation from the norm, progress is not possible.