| Message ID | 20240610134202.54893-26-steven.price@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show
Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 029B61552F9; Mon, 10 Jun 2024 13:43:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718027022; cv=none; b=VwwcYZZxvrHovnbj4153nKKlw45GmWhh9vVrQripgzVtP4hYBSzv++4QYfwxTQ408ifjnjS3ljGL6eYFJOD2GakbA61ZPd1BbMSwPJbUAOJE0NTWm5SpoRwG2uNesK9GX6iswziBTZQ5aaS9WoYY1326aLuTS8IPZEdolKJPLys= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718027022; c=relaxed/simple; bh=/ylcxNjyNjOH/FxoiCWd7H6320+ueYCpQ0azhp+BuI4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=CbOrcOex00Ld3lxDSUg4wxJShytr1X3rF+Sh9qgj1Y93CjTBzRns/pOO4KgoLM5+mgoEq2ZvX5YnCShOGQJ4TnsiN1eyBtHIu6dEg8fT9m9m1zPvd+IYm/BNkgEznrte5BnpqDxYUDwWIB8aIlyCL/1+pfts8/sE+Nlptoa8vOM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 324751688; Mon, 10 Jun 2024 06:44:05 -0700 (PDT) Received: from e122027.cambridge.arm.com (e122027.cambridge.arm.com [10.1.35.41]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6FCB63F58B; Mon, 10 Jun 2024 06:43:37 -0700 (PDT) From: Steven Price <steven.price@arm.com> To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price <steven.price@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>, Oliver Upton <oliver.upton@linux.dev>, Suzuki K Poulose <suzuki.poulose@arm.com>, Zenghui Yu <yuzenghui@huawei.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly <joey.gouly@arm.com>, Alexandru Elisei <alexandru.elisei@arm.com>, Christoffer Dall <christoffer.dall@arm.com>, Fuad Tabba <tabba@google.com>, linux-coco@lists.linux.dev, Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com> Subject: [PATCH v3 25/43] KVM: arm64: WARN on injected undef exceptions Date: Mon, 10 Jun 2024 14:41:44 +0100 Message-Id: <20240610134202.54893-26-steven.price@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240610134202.54893-1-steven.price@arm.com> References: <20240610134202.54893-1-steven.price@arm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: <kvm.vger.kernel.org> List-Subscribe: <mailto:kvm+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:kvm+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit |
| Series |
arm64: Support for Arm CCA in KVM
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expand
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diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c index a640e839848e..44ce1c9bdc2e 100644 --- a/arch/arm64/kvm/inject_fault.c +++ b/arch/arm64/kvm/inject_fault.c @@ -224,6 +224,8 @@ void kvm_inject_size_fault(struct kvm_vcpu *vcpu) */ void kvm_inject_undefined(struct kvm_vcpu *vcpu) { + if (vcpu_is_rec(vcpu)) + WARN(1, "Cannot inject undefined exception into REC. Continuing with unknown behaviour"); if (vcpu_el1_is_32bit(vcpu)) inject_undef32(vcpu); else
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@arm.com> --- arch/arm64/kvm/inject_fault.c | 2 ++ 1 file changed, 2 insertions(+)