linux-kernel - Re: [PATCH 1/2] KVM: arm64: Dump instruction on hyp panic

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Message-ID: <4a807c89-d57b-463a-9166-836301ee9947@linux.dev>
Date: Thu, 31 Jul 2025 20:58:44 +0800
From: Kunwu Chan <kunwu.chan@...ux.dev>
To: Mostafa Saleh <smostafa@...gle.com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] KVM: arm64: Dump instruction on hyp panic

Hi Mostafa,
On 2025/7/18 07:47, Mostafa Saleh wrote:

... ....

> +	/* Dump the faulting instruction */
> +	if (!is_protected_kvm_enabled() ||
> +	    IS_ENABLED(CONFIG_NVHE_EL2_DEBUG))
> +		dump_instr(panic_addr + kaslr_offset());
> +
This part seem like unnecessary, cause it'll be remove in patch 2(Only 
the comment left).

>   	/*
>   	 * Hyp has panicked and we're going to handle that by panicking the
>   	 * kernel. The kernel offset will be revealed in the panic so we're
Another confusion is that no similar wording to what you mentioned in 
the cover—specifically "Cannot dump pKVM nVHE stacktrace: 
!CONFIG_PROTECTED_NVHE_STACKTRACE"—has been found in the code.


-- 
Thanks,
        Kunwu Chan.