From nobody Sun Apr 5 19:50:06 2026 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id A0B842EC0A7; Sat, 14 Mar 2026 17:51:43 +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=1773510705; cv=none; b=eLL8f3eAcYwjTWe3X30JvavagqHwWQU/wu927CkghBDsfDsN6sHTPuWYyxppJ+O1tVporhJlZP4Tbw3QTmO7N0qgB+fEmXyEuhLDVjmXfrRetRvCWQB5Gnyv6qgJzxd3Mcuh2ATWlJXAcxBgs4declinGj1FFbvNl2/K2NGjnrk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773510705; c=relaxed/simple; bh=4Gv8iwjh1zDT2SeKSMMFrQ3dnzhmmicacYc/sIOILow=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=n5dkLXKIGz9JvkA4TTcJawVTNYfKxKJ5se68lLqkCEedMOQKRQxjIk4faI02ZJreFzA18giyGK9Y23xeDc7yHLK5yCV1Tde4S9WSxjVy19s9hUL7O8B5Ker+6zOrVhNgjA/z3T5Sm9Y6fjAPWCPeNUjbDePtPu6w7gQOuleSl0U= 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 19F92175D; Sat, 14 Mar 2026 10:51:37 -0700 (PDT) Received: from e129823.cambridge.arm.com (e129823.arm.com [10.1.197.6]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B08E23F73B; Sat, 14 Mar 2026 10:51:40 -0700 (PDT) From: Yeoreum Yun To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, oupton@kernel.org, miko.lenczewski@arm.com, kevin.brodsky@arm.com, broonie@kernel.org, ardb@kernel.org, suzuki.poulose@arm.com, lpieralisi@kernel.org, joey.gouly@arm.com, yuzenghui@huawei.com, yeoreum.yun@arm.com Subject: [PATCH v17 2/8] KVM: arm64: expose FEAT_LSUI to guest Date: Sat, 14 Mar 2026 17:51:27 +0000 Message-Id: <20260314175133.1084528-3-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260314175133.1084528-1-yeoreum.yun@arm.com> References: <20260314175133.1084528-1-yeoreum.yun@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" expose FEAT_LSUI to guest. Signed-off-by: Yeoreum Yun Acked-by: Marc Zyngier Reviewed-by: Catalin Marinas --- arch/arm64/kvm/sys_regs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 1b4cacb6e918..484f98eaf6d4 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1805,7 +1805,7 @@ static u64 __kvm_read_sanitised_id_reg(const struct k= vm_vcpu *vcpu, break; case SYS_ID_AA64ISAR3_EL1: val &=3D ID_AA64ISAR3_EL1_FPRCVT | ID_AA64ISAR3_EL1_LSFE | - ID_AA64ISAR3_EL1_FAMINMAX; + ID_AA64ISAR3_EL1_FAMINMAX | ID_AA64ISAR3_EL1_LSUI; break; case SYS_ID_AA64MMFR2_EL1: val &=3D ~ID_AA64MMFR2_EL1_CCIDX_MASK; @@ -3252,6 +3252,7 @@ static const struct sys_reg_desc sys_reg_descs[] =3D { ID_AA64ISAR2_EL1_GPA3)), ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT | ID_AA64ISAR3_EL1_LSFE | + ID_AA64ISAR3_EL1_LSUI | ID_AA64ISAR3_EL1_FAMINMAX)), ID_UNALLOCATED(6,4), ID_UNALLOCATED(6,5), --=20 LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}