From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45B863064A3 for ; Wed, 17 Sep 2025 21:22:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758144128; cv=none; b=sA2oSkRug/2X0XiYqvv6Y2+d+VtYn79Eo/7L49Yk/G7IDGjCVGWmobnlu0KmB+3KPASBhMqIZFcgXAiU6U9GFG2AkZIJd3R0B1MruNIQGYnS4LF2TNMnpLwGDRky7wPBws3h2+pO3P5GHf/ZabwZmpQR9ScLigln872lF8q4/aI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758144128; c=relaxed/simple; bh=2ECb426czea2SYpYkhE4DmYNqWooTIHU5M0c80YM+So=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fIptEOnqkPW9ASi+x1nDVo5ZU1y7L/muHGvwbSobGN8IP0V4ZCR7j/417BYD/5qD/19ZdYsN78ITpFDKSnM2hhh1RjFzOog9cDuJgFQNkt25COnjEsYqsmEC8+7CkDDxSCUMtbhIMrlF0uW/sM51INEu64jcOgaKlFikxbrkrCk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=C66xWBll; arc=none smtp.client-ip=91.218.175.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="C66xWBll" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1758144125; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=X0/Qc2BPdulXzfpw/A9mgu/rx012qP724b25vcBgdKs=; b=C66xWBllv8a5VboTd2riAgHmMXWq8+fWcdel1J+qLpm06LzgAK5neOKLGikjzY9ZGLKy29 f0ubT/b1OgANBHzxEyoZ2fEKpNMvLtVa+/Tv+wgcHX4sWeBEs05eehFv2i76hqpCOf7/AE NzeRnmYVg+X/qjRyIY3i/L8WpgWa0ek= From: Oliver Upton To: kvmarm@lists.linux.dev Cc: Marc Zyngier , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Paolo Bonzini , Sean Christopherson , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , David Hildenbrand , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Oliver Upton Subject: [PATCH 11/13] KVM: arm64: selftests: Initialize HCR_EL2 Date: Wed, 17 Sep 2025 14:20:41 -0700 Message-ID: <20250917212044.294760-12-oliver.upton@linux.dev> In-Reply-To: <20250917212044.294760-1-oliver.upton@linux.dev> References: <20250917212044.294760-1-oliver.upton@linux.dev> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Initialize HCR_EL2 such that EL2&0 is considered 'InHost', allowing the use of (mostly) unmodified EL1 selftests at EL2. Signed-off-by: Oliver Upton --- tools/testing/selftests/kvm/lib/arm64/processor.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/kvm/lib/arm64/processor.c b/tools/testing/selftests/kvm/lib/arm64/processor.c index 5ae65fefd48c..4339de2fc482 100644 --- a/tools/testing/selftests/kvm/lib/arm64/processor.c +++ b/tools/testing/selftests/kvm/lib/arm64/processor.c @@ -369,6 +369,12 @@ void aarch64_vcpu_setup(struct kvm_vcpu *vcpu, struct kvm_vcpu_init *init) vcpu_set_reg(vcpu, ctxt_reg_alias(vcpu, SYS_MAIR_EL1), DEFAULT_MAIR_EL1); vcpu_set_reg(vcpu, ctxt_reg_alias(vcpu, SYS_TTBR0_EL1), ttbr0_el1); vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_TPIDR_EL1), vcpu->id); + + if (!vcpu_has_el2(vcpu)) + return; + + vcpu_set_reg(vcpu, KVM_ARM64_SYS_REG(SYS_HCR_EL2), + HCR_EL2_RW | HCR_EL2_TGE | HCR_EL2_E2H); } void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, uint8_t indent) -- 2.47.3