From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B0BCC26463A; Mon, 27 Oct 2025 09:50:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761558605; cv=none; b=VKbOR8RV4NHEK1JjMy2+XHWLHatptutQ24WIFyXboLR4NstrM4PFr+TBAPuX+Lbbfvt5tVD7Lw4TxSkhIXtu9tuYNwyE7TtYcmHpoEQ0O3Y4up9kuQcVCuQXAvLZ6Vhjm6YeVbqTnFR8HCMcubQAqUTcL7rlQztuIDlXY+u1x5s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761558605; c=relaxed/simple; bh=pC+eGt5qR3M3nYfPyNbPQUDtDiJDp1JmXs8kzQjP70M=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=S2RabYH6nlUIznb1xC1mZpviM/CdAzWn4ieboQm1cX6swWgtUs9+U3YLcQcDzzwHNOdhjxnFBFUIpLIwbGe3IjXTUZpJN6Q7PKGnM7+tVXQFYnlunukBkkXafRTLnHZdM/WkB3l0nM1bvlO675iFNguiYBt06jMYTdySprf4piU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aFKiBw30; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aFKiBw30" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1BA9DC4CEF1; Mon, 27 Oct 2025 09:49:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761558605; bh=pC+eGt5qR3M3nYfPyNbPQUDtDiJDp1JmXs8kzQjP70M=; h=From:To:Cc:Subject:Date:From; b=aFKiBw30yZAtpxPySbZuiysW1bdv54aEjmulI9JcVbBHTvBcqNnWedtKG4+QLBNHl /MwOb0JJ1QDaAGnCZZVoWvsefP0EoYKr3T3ziqgvZs8vhFL3ulxXDbdsr5ZDWDKAkB XJZUj0sd5SRavf0/7Ufhvx1Nd9rkFE31Inc+lNNrDgA9hCuuOw2gh0yQt7Sihy3rQX iMpflYSJ4oW7YmVVswCuv6tY+Kod8+PtQWaNz58T/OVCIX28J8EHALF0YEcAbehNFG vqXNvpsbbNX0Yj0X5n67Mto9jFaYaHcsFryxRVJKW/EUYNet5IuOD2R9aXbdNF9/6G rkQRveScw4HDw== From: "Aneesh Kumar K.V (Arm)" To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dan.j.williams@intel.com, aik@amd.com, lukas@wunner.de, Samuel Ortiz , Xu Yilun , Jason Gunthorpe , Suzuki K Poulose , Steven Price , Bjorn Helgaas , Jonathan Cameron , Catalin Marinas , Marc Zyngier , Will Deacon , Oliver Upton , "Aneesh Kumar K.V (Arm)" Subject: [PATCH 01/12] KVM: arm64: RMI: Export kvm_has_da_feature Date: Mon, 27 Oct 2025 15:18:52 +0530 Message-ID: <20251027094916.1153143-1-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This will be used in later patches Signed-off-by: Aneesh Kumar K.V (Arm) --- arch/arm64/include/asm/kvm_rmi.h | 1 + arch/arm64/include/asm/rmi_smc.h | 1 + arch/arm64/kvm/rmi.c | 6 ++++++ 3 files changed, 8 insertions(+) diff --git a/arch/arm64/include/asm/kvm_rmi.h b/arch/arm64/include/asm/kvm_rmi.h index 1b2cdaac6c50..a967061af6ed 100644 --- a/arch/arm64/include/asm/kvm_rmi.h +++ b/arch/arm64/include/asm/kvm_rmi.h @@ -90,6 +90,7 @@ u32 kvm_realm_ipa_limit(void); u32 kvm_realm_vgic_nr_lr(void); u8 kvm_realm_max_pmu_counters(void); unsigned int kvm_realm_sve_max_vl(void); +bool kvm_has_da_feature(void); u64 kvm_realm_reset_id_aa64dfr0_el1(const struct kvm_vcpu *vcpu, u64 val); diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h index 1000368f1bca..2ea657a87402 100644 --- a/arch/arm64/include/asm/rmi_smc.h +++ b/arch/arm64/include/asm/rmi_smc.h @@ -87,6 +87,7 @@ enum rmi_ripas { #define RMI_FEATURE_REGISTER_0_GICV3_NUM_LRS GENMASK(37, 34) #define RMI_FEATURE_REGISTER_0_MAX_RECS_ORDER GENMASK(41, 38) #define RMI_FEATURE_REGISTER_0_Reserved GENMASK(63, 42) +#define RMI_FEATURE_REGISTER_0_DA BIT(42) #define RMI_REALM_PARAM_FLAG_LPA2 BIT(0) #define RMI_REALM_PARAM_FLAG_SVE BIT(1) diff --git a/arch/arm64/kvm/rmi.c b/arch/arm64/kvm/rmi.c index 478a73e0b35a..08f3d2362dfd 100644 --- a/arch/arm64/kvm/rmi.c +++ b/arch/arm64/kvm/rmi.c @@ -1738,6 +1738,12 @@ int kvm_init_realm_vm(struct kvm *kvm) return 0; } +bool kvm_has_da_feature(void) +{ + return rmi_has_feature(RMI_FEATURE_REGISTER_0_DA); +} +EXPORT_SYMBOL_GPL(kvm_has_da_feature); + void kvm_init_rmi(void) { /* Only 4k page size on the host is supported */ -- 2.43.0