From nobody Wed Dec 17 11:00:26 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 A4410C07E97 for ; Tue, 28 Nov 2023 14:54:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346445AbjK1OyU (ORCPT ); Tue, 28 Nov 2023 09:54:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345866AbjK1OyL (ORCPT ); Tue, 28 Nov 2023 09:54:11 -0500 Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7415C10CC for ; Tue, 28 Nov 2023 06:54:18 -0800 (PST) Received: by mail-pg1-x52f.google.com with SMTP id 41be03b00d2f7-5c1acc1fa98so4804301a12.0 for ; Tue, 28 Nov 2023 06:54:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1701183258; x=1701788058; 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=zWjJzXo4ydUM1qBdZFj/A/LBdPnzjXBTEeDQn9bxklc=; b=SR+B9bwQXi1BDIf/KEeufLybH3ombV18cVXRQqpJImYLpG8SpO+cdSbaVDIqnQ2z84 JLxtK+Wynfvo7HT3RPHaPeNVq1IGraDhjzk9PYH5I+QPmIjjeBz76mM0BLj3ZJEWGKMZ 5emkb6wQAPk1p0MEFurduanGw9AI6Pt8s+mBDGdd4PuJrkRLJj0LZEIGn1KBXftxHaB2 v0ZM5QIt/I8JhGLB5o/BGhfMGFBFzzyFJLRQotvpMz6FpTHlYUpE4P3k2Y8L9MtxOfu4 SzJzILJYi2fMEC4+nbRwzoKTHpLHu75c/QblP+axsASgrroErSlhMupJTxipK3jTpdpR dyaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701183258; x=1701788058; 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=zWjJzXo4ydUM1qBdZFj/A/LBdPnzjXBTEeDQn9bxklc=; b=SFwO5Bugw8n5v0nEen9S3v0Mf02bH4mP8k36quJc0tMD3j170L7gS09stBUInlLGcL YWStnvRLZXVF7SH6K1nNHf/QJLSirAOb0mWhMa97eHFqkIvekksWxEPrYCHb4MD09XUG AybTZQXbQJq0/4dxMWpzNU0iVBnYb/1pDl0/dh+uDGu4B8Hmh6lw0f6VtYqXr+WPh+dH 8YUhzYw1KukBcFFfdZrI4WYapnd6X9QxuQNDtaHq4rwV8i0Cxop/oiAQbRmWzpYyBDFE AgkbmafIW4ZafwqHB2l3UyiJh1vWODAN0qFHpupTr2Uj913PYCZ8qkKzWrzDcH0RaHkK iagw== X-Gm-Message-State: AOJu0YzdDUuWwB6vcK794eD8gZQS8ign04FsTsUPSt6sd8+I8ERwWKbr 27YmikeULL7m+8N1RjuFXrblKg== X-Google-Smtp-Source: AGHT+IGxW136Vwz0iG0z8Bd+73y8peGGLL8YdmZ8vllqxs8AnDN8I+cKti2HazA7AW6wj4+a/QmmRQ== X-Received: by 2002:a17:90b:4b0e:b0:285:b687:b831 with SMTP id lx14-20020a17090b4b0e00b00285b687b831mr14391825pjb.10.1701183257699; Tue, 28 Nov 2023 06:54:17 -0800 (PST) Received: from anup-ubuntu-vm.localdomain ([103.97.165.210]) by smtp.gmail.com with ESMTPSA id u11-20020a170902e80b00b001bf11cf2e21sm10281552plg.210.2023.11.28.06.54.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Nov 2023 06:54:17 -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 02/15] RISC-V: KVM: Allow Zbc extension for Guest/VM Date: Tue, 28 Nov 2023 20:23:44 +0530 Message-Id: <20231128145357.413321-3-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 Zbc extension for Guest/VM. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones --- arch/riscv/include/uapi/asm/kvm.h | 1 + arch/riscv/kvm/vcpu_onereg.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/as= m/kvm.h index 60d3b21dead7..518b368b41e5 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -139,6 +139,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZIHPM, KVM_RISCV_ISA_EXT_SMSTATEEN, KVM_RISCV_ISA_EXT_ZICOND, + KVM_RISCV_ISA_EXT_ZBC, KVM_RISCV_ISA_EXT_MAX, }; =20 diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index f8c9fa0c03c5..f789517c9fae 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -42,6 +42,7 @@ static const unsigned long kvm_isa_ext_arr[] =3D { KVM_ISA_EXT_ARR(SVPBMT), KVM_ISA_EXT_ARR(ZBA), KVM_ISA_EXT_ARR(ZBB), + KVM_ISA_EXT_ARR(ZBC), KVM_ISA_EXT_ARR(ZBS), KVM_ISA_EXT_ARR(ZICBOM), KVM_ISA_EXT_ARR(ZICBOZ), @@ -92,6 +93,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned l= ong ext) case KVM_RISCV_ISA_EXT_SVNAPOT: case KVM_RISCV_ISA_EXT_ZBA: case KVM_RISCV_ISA_EXT_ZBB: + case KVM_RISCV_ISA_EXT_ZBC: case KVM_RISCV_ISA_EXT_ZBS: case KVM_RISCV_ISA_EXT_ZICNTR: case KVM_RISCV_ISA_EXT_ZICOND: --=20 2.34.1