linux-kernel - Re: [PATCH 2/2] KVM: arm64: Map hyp text as RO and dump instr on panic

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Message-ID: <aL7H4-KdLba3VVlX@willie-the-truck>
Date: Mon, 8 Sep 2025 13:11:15 +0100
From: Will Deacon <will@...nel.org>
To: Mostafa Saleh <smostafa@...gle.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	kvmarm@...ts.linux.dev, catalin.marinas@....com, maz@...nel.org,
	oliver.upton@...ux.dev, joey.gouly@....com, suzuki.poulose@....com,
	yuzenghui@...wei.com, qperret@...gle.com, keirf@...gle.com
Subject: Re: [PATCH 2/2] KVM: arm64: Map hyp text as RO and dump instr on
 panic

On Thu, Jul 17, 2025 at 11:47:44PM +0000, Mostafa Saleh wrote:
> Map the hyp text section as RO, there are no secrets there
> and that allows the kernel extract info for debugging.
> 
> As in case of panic we can now dump the faulting instructions
> similar to the kernel.
> 
> Signed-off-by: Mostafa Saleh <smostafa@...gle.com>
> ---
>  arch/arm64/kvm/handle_exit.c    |  4 +---
>  arch/arm64/kvm/hyp/nvhe/setup.c | 12 ++++++++++--
>  2 files changed, 11 insertions(+), 5 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Will