From patchwork Thu Dec 8 19:38:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Matlack X-Patchwork-Id: 13068743 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3A5B5C001B2 for ; Thu, 8 Dec 2022 19:41:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID: References:Mime-Version:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=8nAkwKnL0vpbJWTPUND7RVS1zVc6zlzVRoxjoew1ghQ=; b=siYY1gzs8AYNFoqiUgjDOLw7rv sGzK1Cg5w9ltmWSoFhle6NIYPC2gVwmcqJrlGwoySxhdMn5VlCHX72i9o/53wktpJBPp7b8yhO8DD sI+KN74gYwpPNX2YtfrMssESv8xI648kZrtQl7bTZNEHmg/xkbMTJyRY+OqZNFsKhB/CAPftSg+Xf oHZa/p2SCNQaOnBf4yQKJ6wfHxmGmVPUhbjDJQCCvRCKmmCPe1bsLbhoOu738UwwWdJH1dVAo3fgA +9wCZKMDJAa8sCc7JOmHzqOYULggjzG4zB4cXMli6W0rQQno1UpevuxRbYNauq2s469qjCIfnx4yx pf4ZTdlg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3Mkj-009tPO-QE; Thu, 08 Dec 2022 19:40:17 +0000 Received: from mail-pg1-x54a.google.com ([2607:f8b0:4864:20::54a]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3MkT-009t2D-1S for linux-arm-kernel@lists.infradead.org; Thu, 08 Dec 2022 19:40:03 +0000 Received: by mail-pg1-x54a.google.com with SMTP id k16-20020a635a50000000b0042986056df6so1628042pgm.2 for ; Thu, 08 Dec 2022 11:39:58 -0800 (PST) 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:from:to:cc:subject:date:message-id:reply-to; bh=5KBqh+vKODV/WoeMK21JvgHm4EN7AAHrFHprSoZAMHM=; b=dgxL00zUKdsqPZ5BwEzchIDS0YimfPZdMBfaW+t1GD3oqv+/EkBpDPWncV98t5WdnV TBle0pbiXgVb8ZuL21bA0THizQHKychb2xBY5k3lsL418ll3MgYAwawojTcq9RnFZ3VC gp0JVFFhtOwaUQAjwCHxFRcjwkCDGdko0D8NkwhLAgADuuA/YgCHZFY/7eyI5fPHiQQh P3D22hbfX6yT3l3DPX4jYLR3Wh/wUR/jzAQOf03iuz6zdbNZOzxX9Oq4tp6kuycxWq7u Cl84n0bCDSkrJAp+5vHhyXqu5cM1FpccTofAXSy7fllgJw53/hy7Sw7ooPaKn/gbjJTT tssg== 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:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5KBqh+vKODV/WoeMK21JvgHm4EN7AAHrFHprSoZAMHM=; b=SkzqgCaSsgkYGwC/kMqUs4zy4sZs+hhPYI8Ibsbr+Ne6Gj+cbGMmvLsNXf4+0XTqyY 8mYaQAQFu9716Si7AKh24ljcVDM6MzqG3VfPravgZztaB6t/nHyf/FPlx9fPQnh1InLD qJm/dZ+jBNhQPEhXUyG2E6J48qC/XEUY+pFKx+Hq6nQ/eFi0JTtKgMXfOLpHq5fijt4j CCCEr4BaI6fPD2RZ+onIxR4FWxbKUtdc6hiiX6Fof/MUpMbUUoyksQpOonzUeExoVJgA 6pXcUbPduMS2+Hbl0dNixL+BnFDCgbbrH2Rhc0s7aYq1iwFggSbPNmo7fxUyH1AfrDFo FzCg== X-Gm-Message-State: ANoB5pm2p7vKWrvYcv62d0CvwYQGU/FqOIouL4K/ucXPP1S/oL7BWkKG stFlaIrujniOSb/MoCC1uDm/xtGBQ5eK8w== X-Google-Smtp-Source: AA0mqf54N4YTuY6bG4NbJkmo6GnKEgVcMOgySXZon5g0EbgRxJrycPbdzp1seojBkwcXkg4lld4eR/cLN9ZrOw== X-Received: from dmatlack-n2d-128.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:1309]) (user=dmatlack job=sendgmr) by 2002:a17:90b:f89:b0:219:5b3b:2b9f with SMTP id ft9-20020a17090b0f8900b002195b3b2b9fmr4096869pjb.2.1670528397168; Thu, 08 Dec 2022 11:39:57 -0800 (PST) Date: Thu, 8 Dec 2022 11:38:50 -0800 In-Reply-To: <20221208193857.4090582-1-dmatlack@google.com> Mime-Version: 1.0 References: <20221208193857.4090582-1-dmatlack@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221208193857.4090582-31-dmatlack@google.com> Subject: [RFC PATCH 30/37] KVM: x86/mmu: Rename kvm_flush_remote_tlbs_with_address() From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Huacai Chen , Aleksandar Markovic , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Andrew Morton , David Matlack , Anshuman Khandual , Nadav Amit , "Matthew Wilcox (Oracle)" , Vlastimil Babka , "Liam R. Howlett" , Suren Baghdasaryan , Peter Xu , xu xin , Arnd Bergmann , Yu Zhao , Colin Cross , Hugh Dickins , Ben Gardon , Mingwei Zhang , Krish Sadhukhan , Ricardo Koller , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221208_114001_160403_A16C6D42 X-CRM114-Status: GOOD ( 14.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rename kvm_flush_remote_tlbs_with_address() to kvm_flush_remote_tlbs_range(). This name is shorter, which reduces the number of callsites that need to be broken up across multiple lines, and more readable since it conveys a range of memory is being flushed rather than a single address. No functional change intended. Signed-off-by: David Matlack --- arch/x86/kvm/mmu/mmu.c | 32 ++++++++++++++------------------ arch/x86/kvm/mmu/mmu_internal.h | 3 +-- arch/x86/kvm/mmu/paging_tmpl.h | 4 ++-- arch/x86/kvm/mmu/tdp_mmu.c | 7 +++---- 4 files changed, 20 insertions(+), 26 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index b7bbabac9127..4a28adaa92b4 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -244,8 +244,7 @@ static inline bool kvm_available_flush_tlb_with_range(void) return kvm_x86_ops.tlb_remote_flush_with_range; } -void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, - u64 start_gfn, u64 pages) +void kvm_flush_remote_tlbs_range(struct kvm *kvm, u64 start_gfn, u64 pages) { struct kvm_tlb_range range; int ret = -EOPNOTSUPP; @@ -804,7 +803,7 @@ static void account_shadowed(struct kvm *kvm, struct kvm_mmu_page *sp) kvm_mmu_gfn_disallow_lpage(slot, gfn); if (kvm_mmu_slot_gfn_write_protect(kvm, slot, gfn, PG_LEVEL_4K)) - kvm_flush_remote_tlbs_with_address(kvm, gfn, 1); + kvm_flush_remote_tlbs_range(kvm, gfn, 1); } void track_possible_nx_huge_page(struct kvm *kvm, struct kvm_mmu_page *sp) @@ -1178,7 +1177,7 @@ static void drop_large_spte(struct kvm *kvm, u64 *sptep, bool flush) drop_spte(kvm, sptep); if (flush) - kvm_flush_remote_tlbs_with_address(kvm, sp->gfn, + kvm_flush_remote_tlbs_range(kvm, sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level)); } @@ -1460,7 +1459,7 @@ static bool kvm_set_pte_rmap(struct kvm *kvm, struct kvm_rmap_head *rmap_head, } if (need_flush && kvm_available_flush_tlb_with_range()) { - kvm_flush_remote_tlbs_with_address(kvm, gfn, 1); + kvm_flush_remote_tlbs_range(kvm, gfn, 1); return false; } @@ -1630,8 +1629,8 @@ static void __rmap_add(struct kvm *kvm, kvm->stat.max_mmu_rmap_size = rmap_count; if (rmap_count > RMAP_RECYCLE_THRESHOLD) { kvm_zap_all_rmap_sptes(kvm, rmap_head); - kvm_flush_remote_tlbs_with_address( - kvm, sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level)); + kvm_flush_remote_tlbs_range(kvm, sp->gfn, + KVM_PAGES_PER_HPAGE(sp->role.level)); } } @@ -2389,7 +2388,7 @@ static void validate_direct_spte(struct kvm_vcpu *vcpu, u64 *sptep, return; drop_parent_pte(child, sptep); - kvm_flush_remote_tlbs_with_address(vcpu->kvm, child->gfn, 1); + kvm_flush_remote_tlbs_range(vcpu->kvm, child->gfn, 1); } } @@ -2873,8 +2872,8 @@ static int mmu_set_spte(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot, } if (flush) - kvm_flush_remote_tlbs_with_address(vcpu->kvm, gfn, - KVM_PAGES_PER_HPAGE(level)); + kvm_flush_remote_tlbs_range(vcpu->kvm, gfn, + KVM_PAGES_PER_HPAGE(level)); pgprintk("%s: setting spte %llx\n", __func__, *sptep); @@ -5809,9 +5808,8 @@ slot_handle_level_range(struct kvm *kvm, const struct kvm_memory_slot *memslot, if (need_resched() || rwlock_needbreak(&kvm->mmu_lock)) { if (flush && flush_on_yield) { - kvm_flush_remote_tlbs_with_address(kvm, - start_gfn, - iterator.gfn - start_gfn + 1); + kvm_flush_remote_tlbs_range(kvm, start_gfn, + iterator.gfn - start_gfn + 1); flush = false; } cond_resched_rwlock_write(&kvm->mmu_lock); @@ -6166,8 +6164,7 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end) } if (flush) - kvm_flush_remote_tlbs_with_address(kvm, gfn_start, - gfn_end - gfn_start); + kvm_flush_remote_tlbs_range(kvm, gfn_start, gfn_end - gfn_start); kvm_mmu_invalidate_end(kvm, gfn_start, gfn_end); @@ -6506,7 +6503,7 @@ static bool kvm_mmu_zap_collapsible_spte(struct kvm *kvm, kvm_zap_one_rmap_spte(kvm, rmap_head, sptep); if (kvm_available_flush_tlb_with_range()) - kvm_flush_remote_tlbs_with_address(kvm, sp->gfn, + kvm_flush_remote_tlbs_range(kvm, sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level)); else need_tlb_flush = 1; @@ -6557,8 +6554,7 @@ void kvm_arch_flush_remote_tlbs_memslot(struct kvm *kvm, * is observed by any other operation on the same memslot. */ lockdep_assert_held(&kvm->slots_lock); - kvm_flush_remote_tlbs_with_address(kvm, memslot->base_gfn, - memslot->npages); + kvm_flush_remote_tlbs_range(kvm, memslot->base_gfn, memslot->npages); } void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm, diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index 4aa60d5d87b0..d35a5b408b98 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -65,8 +65,7 @@ void kvm_mmu_gfn_allow_lpage(const struct kvm_memory_slot *slot, gfn_t gfn); bool kvm_mmu_slot_gfn_write_protect(struct kvm *kvm, struct kvm_memory_slot *slot, u64 gfn, int min_level); -void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, - u64 start_gfn, u64 pages); +void kvm_flush_remote_tlbs_range(struct kvm *kvm, u64 start_gfn, u64 pages); unsigned int pte_list_count(struct kvm_rmap_head *rmap_head); extern int nx_huge_pages; diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index daf9c7731edc..bfee5e0d1ee1 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -929,8 +929,8 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa) mmu_page_zap_pte(vcpu->kvm, sp, sptep, NULL); if (is_shadow_present_pte(old_spte)) - kvm_flush_remote_tlbs_with_address(vcpu->kvm, - sp->gfn, KVM_PAGES_PER_HPAGE(sp->role.level)); + kvm_flush_remote_tlbs_range(vcpu->kvm, sp->gfn, + KVM_PAGES_PER_HPAGE(sp->role.level)); if (!rmap_can_add(vcpu)) break; diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 72746b645e99..1f1f511cd1a0 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -676,8 +676,7 @@ static inline int tdp_mmu_zap_spte_atomic(struct kvm *kvm, if (ret) return ret; - kvm_flush_remote_tlbs_with_address(kvm, iter->gfn, - TDP_PAGES_PER_LEVEL(iter->level)); + kvm_flush_remote_tlbs_range(kvm, iter->gfn, TDP_PAGES_PER_LEVEL(iter->level)); /* * No other thread can overwrite the removed SPTE as they must either @@ -1067,8 +1066,8 @@ static int tdp_mmu_map_handle_target_level(struct kvm_vcpu *vcpu, return RET_PF_RETRY; else if (tdp_pte_is_present(iter->old_spte) && !tdp_pte_is_leaf(iter->old_spte, iter->level)) - kvm_flush_remote_tlbs_with_address(vcpu->kvm, sp->gfn, - TDP_PAGES_PER_LEVEL(iter->level + 1)); + kvm_flush_remote_tlbs_range(vcpu->kvm, sp->gfn, + TDP_PAGES_PER_LEVEL(iter->level + 1)); /* * If the page fault was caused by a write but the page is write