linux-kernel - Re: [PATCH v7 25/45] KVM: arm64: WARN on injected undef exceptions

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Message-ID: <bf568862-5435-4c88-9364-0190f30a3d9a@redhat.com>
Date: Tue, 4 Mar 2025 15:39:51 +1000
From: Gavin Shan <gshan@...hat.com>
To: Steven Price <steven.price@....com>, kvm@...r.kernel.org,
 kvmarm@...ts.linux.dev
Cc: Catalin Marinas <catalin.marinas@....com>, Marc Zyngier <maz@...nel.org>,
 Will Deacon <will@...nel.org>, James Morse <james.morse@....com>,
 Oliver Upton <oliver.upton@...ux.dev>,
 Suzuki K Poulose <suzuki.poulose@....com>, Zenghui Yu
 <yuzenghui@...wei.com>, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Joey Gouly <joey.gouly@....com>,
 Alexandru Elisei <alexandru.elisei@....com>,
 Christoffer Dall <christoffer.dall@....com>, Fuad Tabba <tabba@...gle.com>,
 linux-coco@...ts.linux.dev,
 Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
 Shanker Donthineni <sdonthineni@...dia.com>, Alper Gun
 <alpergun@...gle.com>, "Aneesh Kumar K . V" <aneesh.kumar@...nel.org>
Subject: Re: [PATCH v7 25/45] KVM: arm64: WARN on injected undef exceptions

On 2/14/25 2:14 AM, Steven Price wrote:
> The RMM doesn't allow injection of a undefined exception into a realm
> guest. Add a WARN to catch if this ever happens.
> 
> Signed-off-by: Steven Price <steven.price@....com>
> ---
> Changes since v6:
>   * if (x) WARN(1, ...) makes no sense, just WARN(x, ...)!
> ---
>   arch/arm64/kvm/inject_fault.c | 1 +
>   1 file changed, 1 insertion(+)
> 

Reviewed-by: Gavin Shan <gshan@...hat.com>