From nobody Fri Dec 19 17:17:32 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 14A0A30DED5; Thu, 6 Nov 2025 09:40:36 +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=1762422038; cv=none; b=rITRrlssftHycRp7buQ6rudW98YKdy4Y3Ut7HDKAt9FloAuuBXolUcK1rf4kun5r5J8+0Lv7gSmVk+i4SWhcLqJ8l04cqMNrB6Oxoudvdqk1Bv8D725flsaZ5/YFKg74JV7u6iqIbvAw4CnjVoix9vBAPKSFi/otxZQzH19xeHo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762422038; c=relaxed/simple; bh=MKadygP1lUHNKc/jE7Dp8GoOTd34OpPPkLdDG0S2Dm0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=M6Pl9GpzuXjn6/aOULzr11LCTtNOWUcbxjDSxlWOISdSzYgm0ys+iGVw3uJVUlhA/BSJxYVG7XtcBfcg74OT2OCXnVsmpP8XeVh2/CgLT7kB/r0BSkRo6Yq9nGFX8xxNlmmXponNQL8/ZXfT3uqpn76uDNqox805VpdR3kIZJSk= 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 AABF81655; Thu, 6 Nov 2025 01:40:28 -0800 (PST) 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 44D5B3F63F; Thu, 6 Nov 2025 01:40:33 -0800 (PST) From: Yeoreum Yun To: catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, broonie@kernel.org, oliver.upton@linux.dev, miko.lenczewski@arm.com, kevin.brodsky@arm.com, ardb@kernel.org, suzuki.poulose@arm.com, lpieralisi@kernel.org, yangyicong@hisilicon.com, scott@os.amperecomputing.com, joey.gouly@arm.com, yuzenghui@huawei.com, pbonzini@redhat.com, shuah@kernel.org, mark.rutland@arm.com Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, Yeoreum Yun Subject: [PATCH v11 2/9] KVM: arm64: expose FEAT_LSUI to guest Date: Thu, 6 Nov 2025 09:40:16 +0000 Message-Id: <20251106094023.1371246-3-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251106094023.1371246-1-yeoreum.yun@arm.com> References: <20251106094023.1371246-1-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 e67eb39ddc11..c1ac45058fae 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1790,7 +1790,7 @@ 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; @@ -3231,6 +3231,7 @@ 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}