From: Oliver Upton <oupton@kernel.org>
To: Marc Zyngier <maz@kernel.org>,
kvmarm@lists.linux.dev, 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>,
Mark Rutland <mark.rutland@arm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Shuah Khan <shuah@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 0/2] KVM: arm64: Return -EINVAL for an empty SMCCC filter range at base 0
Date: Tue, 15 Sep 2026 15:25:37 -0700 [thread overview]
Message-ID: <178951103699.10790.2965757289938875509.b4-ty@kernel.org> (raw)
In-Reply-To: <20260829054856.70549-1-kmehltretter@gmail.com>
On Sat, 29 Aug 2026 07:48:54 +0200, Karl Mehltretter wrote:
> KVM_ARM_VM_SMCCC_FILTER rejects an empty range (nr_functions == 0) with
> -EINVAL for every base except 0. kvm_smccc_set_filter() only rejects a
> range if its inclusive end, base + nr_functions - 1, is below base; for
> base 0 that end wraps to U32_MAX, and KVM then tries to insert
> [0, U32_MAX], which overlaps the reserved Arm Architecture Calls
> ranges, so the attribute returns -EEXIST instead of -EINVAL.
>
> [...]
Applied to fixes, thanks!
[1/2] KVM: arm64: Return -EINVAL for an empty SMCCC filter range at base 0
https://git.kernel.org/kvmarm/kvmarm/c/64dc6f1db7e6
[2/2] KVM: arm64: selftests: Test empty SMCCC filter range at base 0
https://git.kernel.org/kvmarm/kvmarm/c/0a46eb5719fa
--
Best,
Oliver
prev parent reply other threads:[~2026-09-15 22:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-29 5:48 Karl Mehltretter
2026-08-29 5:48 ` [PATCH 1/2] " Karl Mehltretter
2026-08-29 15:04 ` Fuad Tabba
2026-08-29 15:53 ` Karl Mehltretter
2026-08-29 15:55 ` Fuad Tabba
2026-09-01 7:38 ` Steffen Eiden
2026-08-29 5:48 ` [PATCH 2/2] KVM: arm64: selftests: Test " Karl Mehltretter
2026-08-29 15:04 ` Fuad Tabba
2026-09-01 7:39 ` Steffen Eiden
2026-09-15 22:25 ` Oliver Upton [this message]
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