From nobody Wed Dec 17 11:00:23 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD942C4167B for ; Tue, 28 Nov 2023 14:54:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346427AbjK1Oyi (ORCPT ); Tue, 28 Nov 2023 09:54:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346279AbjK1OyZ (ORCPT ); Tue, 28 Nov 2023 09:54:25 -0500 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80B411BDD for ; Tue, 28 Nov 2023 06:54:28 -0800 (PST) Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1cf8c462766so39941695ad.1 for ; Tue, 28 Nov 2023 06:54:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1701183268; x=1701788068; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=vqxVg8l3Hg6Frv7KJ86Slj6nrb0o+W/dOYeQGaFJwTE=; b=RwnLmE4rkrQMvGRi/+5v+L5fyf0KqiEjfivfQtk29e0o0NlGtHVDzFrB6WV41va5Dn 37UM8/GTdAKsQy0/2BdVsa2BlEZS5DkVJ48dgSTjILpcoVXEjeDSgsQ6Mun9i0Muicux vuM3jpyyYilBA1VRqPD66VZwX1gqUKNB7K4bwD6tfH+qGzXRZPCXbrF/+m7ixduyEel4 DqEdlwhbzt7ppX++rAwqaxfi5mi4vfwtvJmLLVHHFyPdrRl3zulTyl859b5Segj4HpPD nppb//Ov0jqf6FS6C8mjsD/Ajyns9q/NbmEPe1DD0aX79WeJbCBST3Dt2CQTQPVcaSAq tfSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701183268; x=1701788068; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=vqxVg8l3Hg6Frv7KJ86Slj6nrb0o+W/dOYeQGaFJwTE=; b=gKP1bwfBgy7dF9OtXgZyO8i42q0+f5T7wTfpOxrvQG4R1wS1fMeid3if+BnHEoaUBc 6i+FBaDBVTLgleEhnFBbnnBm88go5NOA7ykHH16TJHHRfw9P5I+zZz5cGwwp2jIZsKJR Ds1F6n7y2xYbfc/4+9OGF8Ix9f1TMZbU7Vt+/UKRemrTSrrVJKoo7blFxlUvBNnzl6d0 UB3lxMfMKveI+pnCwjKJadn7WTPn8qiOKLRi8Q8Bc5POaKUsVRYM5DkfOh8c+YRlsoKN 0mFQG/rY2kQeT/b+3TbNMQ/rd9To9NJ5n7XLNVbh14WRW3vt3LxkEGg0M6s0WLvo9elT bzCw== X-Gm-Message-State: AOJu0YwG9piYP4X8QmvrFjJpJmV/Zs9BcjDenOIywb2tVbrDpnorN+TY y5GwhTzpFWX4mUlrpQBW8q+Bqw== X-Google-Smtp-Source: AGHT+IFcoaA2hxnFbXCCUocOR1sG99CREnANM1PmTY3hLfSSQRNudLUWraMAAhbsdJoHp2lrLA44uw== X-Received: by 2002:a17:903:11c4:b0:1cc:4072:22c6 with SMTP id q4-20020a17090311c400b001cc407222c6mr17937667plh.24.1701183267919; Tue, 28 Nov 2023 06:54:27 -0800 (PST) Received: from anup-ubuntu-vm.localdomain ([103.97.165.210]) by smtp.gmail.com with ESMTPSA id u11-20020a170902e80b00b001bf11cf2e21sm10281552plg.210.2023.11.28.06.54.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Nov 2023 06:54:27 -0800 (PST) From: Anup Patel To: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Shuah Khan Cc: Anup Patel , Andrew Jones , devicetree@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Anup Patel Subject: [PATCH 04/15] RISC-V: KVM: Allow scalar crypto extensions for Guest/VM Date: Tue, 28 Nov 2023 20:23:46 +0530 Message-Id: <20231128145357.413321-5-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231128145357.413321-1-apatel@ventanamicro.com> References: <20231128145357.413321-1-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" We extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable scalar crypto extensions for Guest/VM. This includes extensions Zbkb, Zbkc, Zbkx, Zknd, Zkne, Zknh, Zkr, Zksed, Zksh, and Zkt. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones --- arch/riscv/include/uapi/asm/kvm.h | 10 ++++++++++ arch/riscv/kvm/vcpu_onereg.c | 20 ++++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/as= m/kvm.h index 518b368b41e5..7b54fa215d6d 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -140,6 +140,16 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_SMSTATEEN, KVM_RISCV_ISA_EXT_ZICOND, KVM_RISCV_ISA_EXT_ZBC, + KVM_RISCV_ISA_EXT_ZBKB, + KVM_RISCV_ISA_EXT_ZBKC, + KVM_RISCV_ISA_EXT_ZBKX, + KVM_RISCV_ISA_EXT_ZKND, + KVM_RISCV_ISA_EXT_ZKNE, + KVM_RISCV_ISA_EXT_ZKNH, + KVM_RISCV_ISA_EXT_ZKR, + KVM_RISCV_ISA_EXT_ZKSED, + KVM_RISCV_ISA_EXT_ZKSH, + KVM_RISCV_ISA_EXT_ZKT, KVM_RISCV_ISA_EXT_MAX, }; =20 diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index f789517c9fae..b0beebd4f86e 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -43,6 +43,9 @@ static const unsigned long kvm_isa_ext_arr[] =3D { KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), KVM_ISA_EXT_ARR(ZBC), + KVM_ISA_EXT_ARR(ZBKB), + KVM_ISA_EXT_ARR(ZBKC), + KVM_ISA_EXT_ARR(ZBKX), KVM_ISA_EXT_ARR(ZBS), KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), @@ -52,6 +55,13 @@ static const unsigned long kvm_isa_ext_arr[] =3D { KVM_ISA_EXT_ARR(ZIFENCEI), KVM_ISA_EXT_ARR(ZIHINTPAUSE), KVM_ISA_EXT_ARR(ZIHPM), + KVM_ISA_EXT_ARR(ZKND), + KVM_ISA_EXT_ARR(ZKNE), + KVM_ISA_EXT_ARR(ZKNH), + KVM_ISA_EXT_ARR(ZKR), + KVM_ISA_EXT_ARR(ZKSED), + KVM_ISA_EXT_ARR(ZKSH), + KVM_ISA_EXT_ARR(ZKT), }; =20 static unsigned long kvm_riscv_vcpu_base2isa_ext(unsigned long base_ext) @@ -94,6 +104,9 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned = long ext) case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: case KVM_RISCV_ISA_EXT_ZBC: + case KVM_RISCV_ISA_EXT_ZBKB: + case KVM_RISCV_ISA_EXT_ZBKC: + case KVM_RISCV_ISA_EXT_ZBKX: case KVM_RISCV_ISA_EXT_ZBS: case KVM_RISCV_ISA_EXT_ZICNTR: case KVM_RISCV_ISA_EXT_ZICOND: @@ -101,6 +114,13 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigne= d long ext) case KVM_RISCV_ISA_EXT_ZIFENCEI: case KVM_RISCV_ISA_EXT_ZIHINTPAUSE: case KVM_RISCV_ISA_EXT_ZIHPM: + case KVM_RISCV_ISA_EXT_ZKND: + case KVM_RISCV_ISA_EXT_ZKNE: + case KVM_RISCV_ISA_EXT_ZKNH: + case KVM_RISCV_ISA_EXT_ZKR: + case KVM_RISCV_ISA_EXT_ZKSED: + case KVM_RISCV_ISA_EXT_ZKSH: + case KVM_RISCV_ISA_EXT_ZKT: return false; /* Extensions which can be disabled using Smstateen */ case KVM_RISCV_ISA_EXT_SSAIA: --=20 2.34.1