linux-kernel - Re: [RFC PATCH v1] KVM: arm64: Introduce KVM_CAP_ARM_SIGBUS_ON

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Message-ID: <877c98u8zq.wl-maz@kernel.org>
Date: Tue, 12 Nov 2024 08:55:21 +0000
From: Marc Zyngier <maz@...nel.org>
To: Jiaqi Yan <jiaqiyan@...gle.com>
Cc: oliver.upton@...ux.dev,
	joey.gouly@....com,
	suzuki.poulose@....com,
	yuzenghui@...wei.com,
	catalin.marinas@....com,
	will@...nel.org,
	pbonzini@...hat.com,
	linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,
	kvm@...r.kernel.org,
	duenwen@...gle.com,
	rananta@...gle.com,
	James Houghton <jthoughton@...gle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH v1] KVM: arm64: Introduce KVM_CAP_ARM_SIGBUS_ON_SEA

On Fri, 08 Nov 2024 21:18:50 +0000,
Jiaqi Yan <jiaqiyan@...gle.com> wrote:
> 
> There is also a kernel config called ARM64_RAS_EXTN but I believe it
> is for the host CPU, not about VM's RAS.
> 
> But taking Oliver's opinion into account, I think we want to remove
> KVM_CAP_ARM_SIGBUS_ON_SEA. Wonder what your thoughts are.

If we stick to a signal-based signalling (which I still dislike with a
burning passion), then I agree it can be removed, as this is no
different from a signal being delivered from the rest of the kernel.

	M.

-- 
Without deviation from the norm, progress is not possible.