From nobody Thu Dec 18 15:44:31 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 42325C77B73 for ; Wed, 19 Apr 2023 22:17:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231334AbjDSWR5 (ORCPT ); Wed, 19 Apr 2023 18:17:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41200 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229793AbjDSWRk (ORCPT ); Wed, 19 Apr 2023 18:17:40 -0400 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12C821718 for ; Wed, 19 Apr 2023 15:17:39 -0700 (PDT) Received: by mail-pg1-x531.google.com with SMTP id 41be03b00d2f7-524b02cc166so64221a12.0 for ; Wed, 19 Apr 2023 15:17:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20221208.gappssmtp.com; s=20221208; t=1681942658; x=1684534658; 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=ur77tHINwX+qbUdlSGnRNMwUnwDaAVVcewhgSBhFUx0=; b=c18b6HjhB6xZTijYQX2nimbdoBlIXr9qBNm2sHraX79sumJ2mnHyyAF4iUwGRyqfEL BhG5ZneVkTF9bRo5tCCiGvsNVcpWUKCNmPy0vd1ZqJvuNoQxq1qR6f9cnB7vi+C19Hpt 5xUpfFR1k+6B8FbGHFbFXaZtvW/H2sqgRRevhtG9hluShqAQzpot/WQd/qsXuDNgOnpx pk3tmGjn1iUOEgqZ0Ek3rQdbQ5Ky98ttJ9TAom0YVfPe7HTavUoUAmMw/LDuEdRosyc4 CHRnQ9rCEYyXJCmVNUHBEGkpIQ2ljog3inmdpJcdTAOUNGgtwJP32aGziItUDdOFTV+8 kKew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681942658; x=1684534658; 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=ur77tHINwX+qbUdlSGnRNMwUnwDaAVVcewhgSBhFUx0=; b=fLMJ2VtdZliSRcJ4JmEFRare4caZIk5hSSto2Evw/0ZbLPXL7Da8iyHG4fsqO6OzkQ 3Da4immakuz1Ee5JO2ASqqh1Qy4iUD9b8HR700H7AhObf16GOsONzULnQybAzFgwLyoQ 6kxw4ZEUG8HYqySAIT20K7L4D0niAsZWf0k/BsZ0IQomhWhbfxhFiuPA7EO/xCCuEb39 gdQWXcPIqqf2zIOhwpj33Li4g0Yi3PpUtO86fYmz4TB3kq7uTVlWi2QqfcZazlana83D US9iAkunXCHFwCW8sFNJCLB0TfDzQZpd6G7ucs8qfUYBsrH1xs/mv0z0kv0zNy35y3ga wpvw== X-Gm-Message-State: AAQBX9dpS0gaVQ+IEjdAg3AO000k6RvWE5BAjbaFNqrj42N0yICPjFmQ VQEUruW6hq7+DF5xH5DpHgQVnW8ptufUoEYYq8Q= X-Google-Smtp-Source: AKy350ZqgGYrfhLdHBkYHvd+cLv1LSY5KY8FQdwstau4aKvHx0NnJWKbJ8fq3mAaGG3s8B2dSOXS2Q== X-Received: by 2002:a17:903:1210:b0:1a6:4a64:4d27 with SMTP id l16-20020a170903121000b001a64a644d27mr7782580plh.40.1681942658444; Wed, 19 Apr 2023 15:17:38 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([66.220.2.162]) by smtp.gmail.com with ESMTPSA id jn11-20020a170903050b00b00196807b5189sm11619190plb.292.2023.04.19.15.17.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 15:17:38 -0700 (PDT) From: Atish Patra To: linux-kernel@vger.kernel.org Cc: Atish Patra , Alexandre Ghiti , Andrew Jones , Andrew Morton , Anup Patel , Atish Patra , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Suzuki K Poulose , Will Deacon , Marc Zyngier , Sean Christopherson , linux-coco@lists.linux.dev, Dylan Reid , abrestic@rivosinc.com, Samuel Ortiz , Christoph Hellwig , Conor Dooley , Greg Kroah-Hartman , Guo Ren , Heiko Stuebner , Jiri Slaby , kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Mayuresh Chitale , Palmer Dabbelt , Paolo Bonzini , Paul Walmsley , Rajnesh Kanwal , Uladzislau Rezki Subject: [RFC 04/48] RISC-V: KVM: Add a helper function to get pgd size Date: Wed, 19 Apr 2023 15:16:32 -0700 Message-Id: <20230419221716.3603068-5-atishp@rivosinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230419221716.3603068-1-atishp@rivosinc.com> References: <20230419221716.3603068-1-atishp@rivosinc.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" The cove support will require to find out the pgd size to be used for the gstage page table directory. Export the value via an additional helper. Signed-off-by: Atish Patra --- arch/riscv/include/asm/kvm_host.h | 1 + arch/riscv/kvm/mmu.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm= _host.h index 8714325..63c46af 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -313,6 +313,7 @@ void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcp= u); void __init kvm_riscv_gstage_mode_detect(void); unsigned long __init kvm_riscv_gstage_mode(void); int kvm_riscv_gstage_gpa_bits(void); +unsigned long kvm_riscv_gstage_pgd_size(void); =20 void __init kvm_riscv_gstage_vmid_detect(void); unsigned long kvm_riscv_gstage_vmid_bits(void); diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index f0fff56..6b037f7 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -797,3 +797,8 @@ int kvm_riscv_gstage_gpa_bits(void) { return gstage_gpa_bits; } + +unsigned long kvm_riscv_gstage_pgd_size(void) +{ + return gstage_pgd_size; +} --=20 2.25.1