From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3FA9C433F5 for ; Wed, 29 Sep 2021 04:30:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB8C061406 for ; Wed, 29 Sep 2021 04:30:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244162AbhI2Ebz (ORCPT ); Wed, 29 Sep 2021 00:31:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244014AbhI2Eb1 (ORCPT ); Wed, 29 Sep 2021 00:31:27 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D003C061753 for ; Tue, 28 Sep 2021 21:29:46 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id x4so643912pln.5 for ; Tue, 28 Sep 2021 21:29:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=OcDKPT+o8pM718i3RLMaqx3xW7Im6h5PXbupy2CRXlk=; b=AlxJKNLVCtbK//MPu0SwfjNSQbHwwFNaK/3A0HUgxYAYkHcIT+rlmMLLt2qZrpyAyp C5t1oA+CT6G5meEEeMzD5kZ8i4MvQTTRPGyO+QzHMZUkoUC3ZJlQo5YNYhLT1Gzx9doh asWRl+ES1erLKQgBHQzTmUb6DExqco2ElcumI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=OcDKPT+o8pM718i3RLMaqx3xW7Im6h5PXbupy2CRXlk=; b=lBUzEBCqH2q0y0y09io25h/380ybGkrSPfUWo03DypH4k3Lj+BmpoC6My7SAS4HOLo 65soTAortNJ0sk+ae6dK6/iqYN865dyDn7OJYgCeT6wl+t/j21rG2r4h41SI4Udcw7oV WXERka9PU137o4Zv8SKp6CTPKPoPRCRcX6fKdCiVOhBx5rHv7WuHO2YxzdvGY2KzhSx4 uGUh4YLPnz9/rinzKTAeaS1QD7u96D6gm2Jr41cSd390vDtCjNob5A3yi5gn/EcvE1ln CdG3L9fniZjbkls/493OCU2XOocuipoFvmNHxuCQG9E/BU20c7Xw1+YhQe1dbptu9Ile BjnQ== X-Gm-Message-State: AOAM531yql7TYNXIixcp3Wm+xoRM70XZiIgZONI10SCFqfKt0kPiPa9L TKeeWw6xK3FNraOanHz6HWJfyQ== X-Google-Smtp-Source: ABdhPJzx/fGyiGUmfwWIVEkifAtKjOaGFTb3lns1h2o/LCiNDuEd1upLa4vG7ByFxiynE/6fn+dXhQ== X-Received: by 2002:a17:90a:f196:: with SMTP id bv22mr4057172pjb.212.1632889785769; Tue, 28 Sep 2021 21:29:45 -0700 (PDT) Received: from localhost ([2401:fa00:8f:203:f818:368:93ef:fa36]) by smtp.gmail.com with UTF8SMTPSA id p17sm268006pjg.54.2021.09.28.21.29.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Sep 2021 21:29:45 -0700 (PDT) From: David Stevens X-Google-Original-From: David Stevens To: Marc Zyngier , Paolo Bonzini Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Will Deacon , Sean Christopherson , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, David Stevens Subject: [PATCH v4 3/4] KVM: arm64/mmu: use gfn_to_pfn_page Date: Wed, 29 Sep 2021 13:29:07 +0900 Message-Id: <20210929042908.1313874-4-stevensd@google.com> X-Mailer: git-send-email 2.33.0.685.g46640cef36-goog In-Reply-To: <20210929042908.1313874-1-stevensd@google.com> References: <20210929042908.1313874-1-stevensd@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Stevens Covert usages of the deprecated gfn_to_pfn functions to the new gfn_to_pfn_page functions. Signed-off-by: David Stevens --- arch/arm64/kvm/mmu.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 1a94a7ca48f2..dc03cc66858e 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -829,7 +829,7 @@ static bool fault_supports_stage2_huge_mapping(struct kvm_memory_slot *memslot, static unsigned long transparent_hugepage_adjust(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long hva, kvm_pfn_t *pfnp, - phys_addr_t *ipap) + struct page **page, phys_addr_t *ipap) { kvm_pfn_t pfn = *pfnp; @@ -838,7 +838,8 @@ transparent_hugepage_adjust(struct kvm *kvm, struct kvm_memory_slot *memslot, * sure that the HVA and IPA are sufficiently aligned and that the * block map is contained within the memslot. */ - if (fault_supports_stage2_huge_mapping(memslot, hva, PMD_SIZE) && + if (*page && + fault_supports_stage2_huge_mapping(memslot, hva, PMD_SIZE) && get_user_mapping_size(kvm, hva) >= PMD_SIZE) { /* * The address we faulted on is backed by a transparent huge @@ -859,10 +860,11 @@ transparent_hugepage_adjust(struct kvm *kvm, struct kvm_memory_slot *memslot, * page accordingly. */ *ipap &= PMD_MASK; - kvm_release_pfn_clean(pfn); + put_page(*page); pfn &= ~(PTRS_PER_PMD - 1); - get_page(pfn_to_page(pfn)); *pfnp = pfn; + *page = pfn_to_page(pfn); + get_page(*page); return PMD_SIZE; } @@ -955,6 +957,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, short vma_shift; gfn_t gfn; kvm_pfn_t pfn; + struct page *page; bool logging_active = memslot_is_logging(memslot); unsigned long fault_level = kvm_vcpu_trap_get_fault_level(vcpu); unsigned long vma_pagesize, fault_granule; @@ -1056,8 +1059,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, */ smp_rmb(); - pfn = __gfn_to_pfn_memslot(memslot, gfn, false, NULL, - write_fault, &writable, NULL); + pfn = __gfn_to_pfn_page_memslot(memslot, gfn, false, NULL, + write_fault, &writable, NULL, &page); if (pfn == KVM_PFN_ERR_HWPOISON) { kvm_send_hwpoison_signal(hva, vma_shift); return 0; @@ -1102,7 +1105,8 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, vma_pagesize = fault_granule; else vma_pagesize = transparent_hugepage_adjust(kvm, memslot, - hva, &pfn, + hva, + &pfn, &page, &fault_ipa); } @@ -1142,14 +1146,17 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, /* Mark the page dirty only if the fault is handled successfully */ if (writable && !ret) { - kvm_set_pfn_dirty(pfn); + if (page) + kvm_set_pfn_dirty(pfn); mark_page_dirty_in_slot(kvm, memslot, gfn); } out_unlock: spin_unlock(&kvm->mmu_lock); - kvm_set_pfn_accessed(pfn); - kvm_release_pfn_clean(pfn); + if (page) { + kvm_set_pfn_accessed(pfn); + put_page(page); + } return ret != -EAGAIN ? ret : 0; } -- 2.33.0.685.g46640cef36-goog