From patchwork Wed Nov 2 23:18:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13029210 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 0CBA9C43219 for ; Wed, 2 Nov 2022 23:24:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229570AbiKBXYH (ORCPT ); Wed, 2 Nov 2022 19:24:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231171AbiKBXWz (ORCPT ); Wed, 2 Nov 2022 19:22:55 -0400 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C427FB4A7 for ; Wed, 2 Nov 2022 16:20:12 -0700 (PDT) Received: by mail-pl1-x64a.google.com with SMTP id l1-20020a170902f68100b00187117d8e44so242994plg.2 for ; Wed, 02 Nov 2022 16:20:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=QZsBYUGDC2IkAwbx22iS+bX782/JjRlyYtWOGf9fm5w=; b=gOl3cNoBRYj8Qpc32NlIEZiSXsQpB/DCyQ/znrDYIZGa+s4IthUOkEHZQZ1ojKZDv7 pTCluXhDLSbuLtIDsd06JUGzyqeVDBKsjduC6joRT5sGTNYRsVo9p/G6Hqiv2ugKa8LH rdr0QZPkDK278uG4dV/k1t11BIQxvRWGgZaRWsIg0DoysUSAp2Ijq63EEZdxc0KL4gix 0HGUBH8kF/zweMHI/2v4mLjob8+u7zdHCmj600jDg7rYDwZddIyY/q/ZMJIgho4CGwiq Rf68OjR0Rg0ygAgFFNEea3lYykknrXRPiTB8JjAsW5m8iBtmAm27VPmRKJbUJVbPKnmY wuxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=QZsBYUGDC2IkAwbx22iS+bX782/JjRlyYtWOGf9fm5w=; b=CT2py7Gu/WiirPTQscUoP52GrDCepvio7CxZwuw0hRlPFti0AJHEPDSZHSDuz6ZO6N 46Irbru7DNXH7Scv+zXu9ITZZ86dPB3F6fydhqq1wnejhorj3dYtTCH5wKUr4AIyxi2f nHLrbI4o+0Nlxc/4a817zaBaiGsW4VCvLbKf+VMUKCNY92vqtecvMNLgvklWHCu1cYmJ Uwh2eP+XPFPiPgB8YaJyYB3EEg7v9KEsHgoMVYQWJ2/7w2dP1ehFT98Or55LzXEhfYOR u3e+mOrw8nwZEwkrAFV0c4YtE1Jg8dVRc+7BsRVq6Fzxnu8k6mmgsOvHfd/XWZcQqQF3 Ke2A== X-Gm-Message-State: ACrzQf2Zb/NGOBMMD0piKra7ZwcpBZkUya5KpdBv4Q5ZuZ/7DNA0YSpT InDSmInErMIt7pPMxM+wb06lD1IE5Ok= X-Google-Smtp-Source: AMsMyM4F5G3DDnuJC2f+gpo6muVhVlP37u9Rx2CD7FgkZCjySGE+h3yA4RelKa6dFXDwgnEtjORGLCa20Ec= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:90b:384a:b0:213:2907:a528 with SMTP id nl10-20020a17090b384a00b002132907a528mr27758885pjb.183.1667431193502; Wed, 02 Nov 2022 16:19:53 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 2 Nov 2022 23:18:50 +0000 In-Reply-To: <20221102231911.3107438-1-seanjc@google.com> Mime-Version: 1.0 References: <20221102231911.3107438-1-seanjc@google.com> X-Mailer: git-send-email 2.38.1.431.g37b22c650d-goog Message-ID: <20221102231911.3107438-24-seanjc@google.com> Subject: [PATCH 23/44] KVM: RISC-V: Tag init functions and data with __init, __ro_after_init From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Matthew Rosato , Eric Farman , Sean Christopherson , Vitaly Kuznetsov Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Atish Patra , David Hildenbrand , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Isaku Yamahata , Fabiano Rosas , Michael Ellerman , Chao Gao , Thomas Gleixner , Yuan Yao Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Now that KVM setup is handled directly in riscv_kvm_init(), tag functions and data that are used/set only during init with __init/__ro_after_init. Signed-off-by: Sean Christopherson Acked-by: Anup Patel --- arch/riscv/include/asm/kvm_host.h | 6 +++--- arch/riscv/kvm/mmu.c | 12 ++++++------ arch/riscv/kvm/vmid.c | 4 ++-- 3 files changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index 8c771fc4f5d2..778ff0f282b7 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -295,11 +295,11 @@ int kvm_riscv_gstage_map(struct kvm_vcpu *vcpu, int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm); void kvm_riscv_gstage_free_pgd(struct kvm *kvm); void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu); -void kvm_riscv_gstage_mode_detect(void); -unsigned long kvm_riscv_gstage_mode(void); +void __init kvm_riscv_gstage_mode_detect(void); +unsigned long __init kvm_riscv_gstage_mode(void); int kvm_riscv_gstage_gpa_bits(void); -void kvm_riscv_gstage_vmid_detect(void); +void __init kvm_riscv_gstage_vmid_detect(void); unsigned long kvm_riscv_gstage_vmid_bits(void); int kvm_riscv_gstage_vmid_init(struct kvm *kvm); bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid); diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index 3620ecac2fa1..f42a34c7879a 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -20,12 +20,12 @@ #include #ifdef CONFIG_64BIT -static unsigned long gstage_mode = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT); -static unsigned long gstage_pgd_levels = 3; +static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT); +static unsigned long gstage_pgd_levels __ro_after_init = 3; #define gstage_index_bits 9 #else -static unsigned long gstage_mode = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT); -static unsigned long gstage_pgd_levels = 2; +static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT); +static unsigned long gstage_pgd_levels __ro_after_init = 2; #define gstage_index_bits 10 #endif @@ -760,7 +760,7 @@ void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu) kvm_riscv_local_hfence_gvma_all(); } -void kvm_riscv_gstage_mode_detect(void) +void __init kvm_riscv_gstage_mode_detect(void) { #ifdef CONFIG_64BIT /* Try Sv57x4 G-stage mode */ @@ -784,7 +784,7 @@ void kvm_riscv_gstage_mode_detect(void) #endif } -unsigned long kvm_riscv_gstage_mode(void) +unsigned long __init kvm_riscv_gstage_mode(void) { return gstage_mode >> HGATP_MODE_SHIFT; } diff --git a/arch/riscv/kvm/vmid.c b/arch/riscv/kvm/vmid.c index 6cd93995fb65..5246da1c9167 100644 --- a/arch/riscv/kvm/vmid.c +++ b/arch/riscv/kvm/vmid.c @@ -17,10 +17,10 @@ static unsigned long vmid_version = 1; static unsigned long vmid_next; -static unsigned long vmid_bits; +static unsigned long vmid_bits __ro_after_init; static DEFINE_SPINLOCK(vmid_lock); -void kvm_riscv_gstage_vmid_detect(void) +void __init kvm_riscv_gstage_vmid_detect(void) { unsigned long old;