From patchwork Mon Mar 31 09:43:17 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 14033395 Received: from szxga07-in.huawei.com (szxga07-in.huawei.com [45.249.212.35]) (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 CD1221DF73A; Mon, 31 Mar 2025 09:59:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.35 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743415155; cv=none; b=eHUjEvBLr6wxRoyeY8ybw3LaLubx7CoYmivn9HLPtKqyjeHaMO1NLAWofWRWIPH6n1ACz4D+PQDonwp7il5rTmdaSQ5cy5RoNqZblfRvSXE+zND3Mq5Cl007cHMybGgi2I/5BSXnLf5YljXruDIp6eA9Aw4RrMTZPWP0ihy2hn4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743415155; c=relaxed/simple; bh=uy4m4/M92J6R2ojWgHdIk4DB3btveuB6CD280a+JYu8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=EquUTdEW7CV93VZKxq7U1iyiPPU4fcW/yvtqFT5UBU8scnzgze0jZrozfrJGL17Xdl9R8LiP4j4t2ONcmbcAT9PI90gap0pQ93QC+RDZF9V8NDSmRxBna+C+KRTB9W6JLQkKHe5Q48Dk/cirwfjBgEOr3IxXRJiU45uCa2sNgQQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.35 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.214]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4ZR5fS4cpSz1f1jg; Mon, 31 Mar 2025 17:38:24 +0800 (CST) Received: from kwepemd200014.china.huawei.com (unknown [7.221.188.8]) by mail.maildlp.com (Postfix) with ESMTPS id EF8A91A016C; Mon, 31 Mar 2025 17:43:10 +0800 (CST) Received: from localhost.localdomain (10.50.165.33) by kwepemd200014.china.huawei.com (7.221.188.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Mon, 31 Mar 2025 17:43:10 +0800 From: Yicong Yang To: , , , , , , , , CC: , , , , , , , , , , Subject: [PATCH v2 3/6] KVM: arm64: Enable FEAT_{LS64, LS64_V} in the supported guest Date: Mon, 31 Mar 2025 17:43:17 +0800 Message-ID: <20250331094320.35226-4-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20250331094320.35226-1-yangyicong@huawei.com> References: <20250331094320.35226-1-yangyicong@huawei.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemd200014.china.huawei.com (7.221.188.8) From: Yicong Yang Using FEAT_{LS64, LS64_V} instructions in a guest is also controlled by HCRX_EL2.{EnALS, EnASR}. Enable it if guest has related feature. Signed-off-by: Yicong Yang --- arch/arm64/include/asm/kvm_emulate.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index d7cf66573aca..9165fcf719ab 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -684,6 +684,12 @@ static inline void vcpu_set_hcrx(struct kvm_vcpu *vcpu) if (kvm_has_fpmr(kvm)) vcpu->arch.hcrx_el2 |= HCRX_EL2_EnFPM; + + if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64)) + vcpu->arch.hcrx_el2 |= HCRX_EL2_EnALS; + + if (kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_V)) + vcpu->arch.hcrx_el2 |= HCRX_EL2_EnASR; } } #endif /* __ARM64_KVM_EMULATE_H__ */