From nobody Sat Oct 4 14:13:11 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id F3D7B2F83C0 for ; Sat, 16 Aug 2025 15:19:39 +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=1755357581; cv=none; b=D9aO2P0fvu93fq+7IuhYspf8i8fB21n7lZcFb7a+5ji2YVOU1i2qNHtTqyfm9OYH0lAqqIitJwcMC/MVCkK4BAYzAj3F575/UO9/LgmBJzr1Eliq+lZtE0JcjDU5XZ5bYAai9oAZYUL7eEq4O0poA6f2+1j/+mMr2yZ7mg3z5Ck= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755357581; c=relaxed/simple; bh=fK6BIl0bRf8TDA36YUrZnKnjDme5iDAORJ48zBkuJE8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=kU2ACKRz7SfluWbEirYkrPk1uU3WCshk6UUXEZ2CMqHXY35/X6CpbdZXiDGha5uE9JFiEUyqmVuYdQgOqGQLrA0FH1N42+2cy9RXDp01TRROrCVRCK3JoJ3VSuEmGy3o+n+P1ET9Gy73hFTbj3zGBnKB4Afm7N/iw/90qVFrM1M= 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 518931D13; Sat, 16 Aug 2025 08:19:31 -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 426123F5A1; Sat, 16 Aug 2025 08:19:37 -0700 (PDT) From: Yeoreum Yun To: catalin.marinas@arm.com, will@kernel.org, broonie@kernel.org, maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, james.morse@arm.com, ardb@kernel.org, scott@os.amperecomputing.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, mark.rutland@arm.com Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, Yeoreum Yun Subject: [PATCH RESEND v7 2/6] KVM: arm64: expose FEAT_LSUI to guest Date: Sat, 16 Aug 2025 16:19:25 +0100 Message-Id: <20250816151929.197589-3-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250816151929.197589-1-yeoreum.yun@arm.com> References: <20250816151929.197589-1-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 | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 82ffb3b3b3cf..fb6c154aa37d 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1642,7 +1642,8 @@ static u64 __kvm_read_sanitised_id_reg(const struct k= vm_vcpu *vcpu, val &=3D ~ARM64_FEATURE_MASK(ID_AA64ISAR2_EL1_WFxT); break; case SYS_ID_AA64ISAR3_EL1: - val &=3D ID_AA64ISAR3_EL1_FPRCVT | ID_AA64ISAR3_EL1_FAMINMAX; + val &=3D ID_AA64ISAR3_EL1_FPRCVT | ID_AA64ISAR3_EL1_FAMINMAX | + ID_AA64ISAR3_EL1_LSUI; break; case SYS_ID_AA64MMFR2_EL1: val &=3D ~ID_AA64MMFR2_EL1_CCIDX_MASK; @@ -2991,7 +2992,7 @@ static const struct sys_reg_desc sys_reg_descs[] =3D { ID_AA64ISAR2_EL1_APA3 | ID_AA64ISAR2_EL1_GPA3)), ID_WRITABLE(ID_AA64ISAR3_EL1, (ID_AA64ISAR3_EL1_FPRCVT | - ID_AA64ISAR3_EL1_FAMINMAX)), + ID_AA64ISAR3_EL1_FAMINMAX | ID_AA64ISAR3_EL1_LSUI)), ID_UNALLOCATED(6,4), ID_UNALLOCATED(6,5), ID_UNALLOCATED(6,6), -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}