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From: Oliver Upton <oupton@kernel.org>
To: Marc Zyngier <maz@kernel.org>,
	Karl Mehltretter <kmehltretter@gmail.com>
Cc: Oliver Upton <oupton@kernel.org>,
	Fuad Tabba <fuad.tabba@linux.dev>,
	Joey Gouly <joey.gouly@arm.com>,
	Steffen Eiden <seiden@linux.ibm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.linux.dev,
	linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH v2] KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID
Date: Wed, 12 Aug 2026 23:49:43 -0700
Message-ID: <178660378177.666424.79190290228047804.b4-ty@kernel.org>
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On Sun, 26 Jul 2026 19:48:03 +0200, Karl Mehltretter wrote:
> vgic_v2_deactivate() passes the INTID a guest wrote to GICV_DIR straight
> to vgic_get_vcpu_irq(), and treats a failed lookup as a "can't happen"
> condition with WARN_ON_ONCE().
> 
> The guest can make it happen at will, though: for any INTID outside of
> the implemented SGI, PPI and SPI ranges the lookup returns NULL, since
> GICv2 has no LPIs. A guest running with EOImode==1 writing such an INTID
> to GICV_DIR triggers the WARN, and panics hosts running with
> panic_on_warn.
> 
> [...]

Applied to next, thanks!

[1/1] KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID
      https://git.kernel.org/kvmarm/kvmarm/c/c6d9c8ac6521

--
Best,
Oliver