From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B69017E1 for ; Sun, 9 Apr 2023 06:30:06 +0000 (UTC) Received: by mail-yb1-f202.google.com with SMTP id v67-20020a254846000000b00b8189f73e94so25750356yba.12 for ; Sat, 08 Apr 2023 23:30:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1681021805; x=1683613805; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=l91z4IN5ufM+bjM+mAjwB0x8oHq8/73erY5LUhWtzxk=; b=bXAcqrs8mtmwYzPDKpB4lwFcpn+14SbEYJcteXMYSFk/1oTh8INI3WLxp6Xwi7v5XE tdOxWWKWC9RUMvMOatmnHUe5bEmHElAKbq5NMHsPP8MNQG4gNG5haLlWe+S9pshc1t8C 2YW5YdcluFNCil1czb2vDVmaa9w4CvXIcjmtSYligfuKuSdw7tXwxWIG2922CsN304Ev Y+vnnxk8mCGxyvPuIMDYLWGHOkTFg6JTy2jUrVK1Pb1oE6nRwSy29mHXk1kEHUSSRb9+ gYkwRFBp1mN0N5C5w+yF8NGStpZXEripxX+3L35lUMieqJA3WGIKjeR1dEf+twTvgR2g wYyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681021805; x=1683613805; 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=l91z4IN5ufM+bjM+mAjwB0x8oHq8/73erY5LUhWtzxk=; b=FoZpl6kcefYJhp9idGJcSyth2p6EamOjytHPLOv0LFal3NBzFF3mUOePB7k0Xpkjp4 3LaPE7mdblI/T/B0T1OpME/2Rx4HdXxy7hDKu5RrX8R0SxSPG9fy6UzTMikF2Jy+rIm+ 3IFLDaaWWe5yQ9vgWffaariTQ6dSZOriF6OJyJnLKCONwZ7qWM535GKNhWQri9rAZNwr flBBeGHT4OgSDDlLMmwjjHvQ5ivWBxMCIcgdy2grcp1+B9hfpH4Lc5SNr7t+X2thRUdL 2RjlVFv5Da91XibrxgMGjKgdFObi4Tr1uPAaWYzy5WgvoRz398VQq+ligL1rZ1dNyutb HtDQ== X-Gm-Message-State: AAQBX9en+QPQlR7bcLp6fzbzEPLNVDWBtzGwJQlPsno4D6mGff/zLLL4 rQv4VTkkq/Hdb76xltw/lXoWGS0A2jSRmw== X-Google-Smtp-Source: AKy350ahseVKGzvcIva6jK2DW8bFMq0WEBxDc2aRi1TCZxznLHpTmAa1afX2FezqZ+sKo05mk6cEYQv+dFXGIQ== X-Received: from ricarkol4.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:1248]) (user=ricarkol job=sendgmr) by 2002:a25:f40f:0:b0:b8d:1cb:5ba6 with SMTP id q15-20020a25f40f000000b00b8d01cb5ba6mr4158785ybd.5.1681021805203; Sat, 08 Apr 2023 23:30:05 -0700 (PDT) Date: Sun, 9 Apr 2023 06:29:48 +0000 In-Reply-To: <20230409063000.3559991-1-ricarkol@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230409063000.3559991-1-ricarkol@google.com> X-Mailer: git-send-email 2.40.0.577.gac1e443424-goog Message-ID: <20230409063000.3559991-2-ricarkol@google.com> Subject: [PATCH v7 01/12] KVM: arm64: Rename free_removed to free_unlinked From: Ricardo Koller To: pbonzini@redhat.com, maz@kernel.org, oupton@google.com, yuzenghui@huawei.com, dmatlack@google.com Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, qperret@google.com, catalin.marinas@arm.com, andrew.jones@linux.dev, seanjc@google.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, eric.auger@redhat.com, gshan@redhat.com, reijiw@google.com, rananta@google.com, bgardon@google.com, ricarkol@gmail.com, Ricardo Koller , Oliver Upton , Shaoqin Huang Content-Type: text/plain; charset="UTF-8" Normalize on referring to tables outside of an active paging structure as 'unlinked'. A subsequent change to KVM will add support for building page tables that are not part of an active paging structure. The existing 'removed_table' terminology is quite clunky when applied in this context. Signed-off-by: Ricardo Koller Reviewed-by: Oliver Upton Reviewed-by: Shaoqin Huang --- arch/arm64/include/asm/kvm_pgtable.h | 8 ++++---- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 6 +++--- arch/arm64/kvm/hyp/pgtable.c | 6 +++--- arch/arm64/kvm/mmu.c | 10 +++++----- 4 files changed, 15 insertions(+), 15 deletions(-) diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index 4cd6762bda805..26a4293726c14 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -104,7 +104,7 @@ static inline bool kvm_level_supports_block_mapping(u32 level) * allocation is physically contiguous. * @free_pages_exact: Free an exact number of memory pages previously * allocated by zalloc_pages_exact. - * @free_removed_table: Free a removed paging structure by unlinking and + * @free_unlinked_table: Free an unlinked paging structure by unlinking and * dropping references. * @get_page: Increment the refcount on a page. * @put_page: Decrement the refcount on a page. When the @@ -124,7 +124,7 @@ struct kvm_pgtable_mm_ops { void* (*zalloc_page)(void *arg); void* (*zalloc_pages_exact)(size_t size); void (*free_pages_exact)(void *addr, size_t size); - void (*free_removed_table)(void *addr, u32 level); + void (*free_unlinked_table)(void *addr, u32 level); void (*get_page)(void *addr); void (*put_page)(void *addr); int (*page_count)(void *addr); @@ -440,7 +440,7 @@ int __kvm_pgtable_stage2_init(struct kvm_pgtable *pgt, struct kvm_s2_mmu *mmu, void kvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt); /** - * kvm_pgtable_stage2_free_removed() - Free a removed stage-2 paging structure. + * kvm_pgtable_stage2_free_unlinked() - Free an unlinked stage-2 paging structure. * @mm_ops: Memory management callbacks. * @pgtable: Unlinked stage-2 paging structure to be freed. * @level: Level of the stage-2 paging structure to be freed. @@ -448,7 +448,7 @@ void kvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt); * The page-table is assumed to be unreachable by any hardware walkers prior to * freeing and therefore no TLB invalidation is performed. */ -void kvm_pgtable_stage2_free_removed(struct kvm_pgtable_mm_ops *mm_ops, void *pgtable, u32 level); +void kvm_pgtable_stage2_free_unlinked(struct kvm_pgtable_mm_ops *mm_ops, void *pgtable, u32 level); /** * kvm_pgtable_stage2_map() - Install a mapping in a guest stage-2 page-table. diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 552653fa18be3..b030170d803b6 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -91,9 +91,9 @@ static void host_s2_put_page(void *addr) hyp_put_page(&host_s2_pool, addr); } -static void host_s2_free_removed_table(void *addr, u32 level) +static void host_s2_free_unlinked_table(void *addr, u32 level) { - kvm_pgtable_stage2_free_removed(&host_mmu.mm_ops, addr, level); + kvm_pgtable_stage2_free_unlinked(&host_mmu.mm_ops, addr, level); } static int prepare_s2_pool(void *pgt_pool_base) @@ -110,7 +110,7 @@ static int prepare_s2_pool(void *pgt_pool_base) host_mmu.mm_ops = (struct kvm_pgtable_mm_ops) { .zalloc_pages_exact = host_s2_zalloc_pages_exact, .zalloc_page = host_s2_zalloc_page, - .free_removed_table = host_s2_free_removed_table, + .free_unlinked_table = host_s2_free_unlinked_table, .phys_to_virt = hyp_phys_to_virt, .virt_to_phys = hyp_virt_to_phys, .page_count = hyp_page_count, diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c index 3d61bd3e591d2..a3246d6cddec7 100644 --- a/arch/arm64/kvm/hyp/pgtable.c +++ b/arch/arm64/kvm/hyp/pgtable.c @@ -860,7 +860,7 @@ static int stage2_map_walk_table_pre(const struct kvm_pgtable_visit_ctx *ctx, if (ret) return ret; - mm_ops->free_removed_table(childp, ctx->level); + mm_ops->free_unlinked_table(childp, ctx->level); return 0; } @@ -905,7 +905,7 @@ static int stage2_map_walk_leaf(const struct kvm_pgtable_visit_ctx *ctx, * The TABLE_PRE callback runs for table entries on the way down, looking * for table entries which we could conceivably replace with a block entry * for this mapping. If it finds one it replaces the entry and calls - * kvm_pgtable_mm_ops::free_removed_table() to tear down the detached table. + * kvm_pgtable_mm_ops::free_unlinked_table() to tear down the detached table. * * Otherwise, the LEAF callback performs the mapping at the existing leaves * instead. @@ -1276,7 +1276,7 @@ void kvm_pgtable_stage2_destroy(struct kvm_pgtable *pgt) pgt->pgd = NULL; } -void kvm_pgtable_stage2_free_removed(struct kvm_pgtable_mm_ops *mm_ops, void *pgtable, u32 level) +void kvm_pgtable_stage2_free_unlinked(struct kvm_pgtable_mm_ops *mm_ops, void *pgtable, u32 level) { kvm_pteref_t ptep = (kvm_pteref_t)pgtable; struct kvm_pgtable_walker walker = { diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 7113587222ffe..efdaab3f154de 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -131,21 +131,21 @@ static void kvm_s2_free_pages_exact(void *virt, size_t size) static struct kvm_pgtable_mm_ops kvm_s2_mm_ops; -static void stage2_free_removed_table_rcu_cb(struct rcu_head *head) +static void stage2_free_unlinked_table_rcu_cb(struct rcu_head *head) { struct page *page = container_of(head, struct page, rcu_head); void *pgtable = page_to_virt(page); u32 level = page_private(page); - kvm_pgtable_stage2_free_removed(&kvm_s2_mm_ops, pgtable, level); + kvm_pgtable_stage2_free_unlinked(&kvm_s2_mm_ops, pgtable, level); } -static void stage2_free_removed_table(void *addr, u32 level) +static void stage2_free_unlinked_table(void *addr, u32 level) { struct page *page = virt_to_page(addr); set_page_private(page, (unsigned long)level); - call_rcu(&page->rcu_head, stage2_free_removed_table_rcu_cb); + call_rcu(&page->rcu_head, stage2_free_unlinked_table_rcu_cb); } static void kvm_host_get_page(void *addr) @@ -682,7 +682,7 @@ static struct kvm_pgtable_mm_ops kvm_s2_mm_ops = { .zalloc_page = stage2_memcache_zalloc_page, .zalloc_pages_exact = kvm_s2_zalloc_pages_exact, .free_pages_exact = kvm_s2_free_pages_exact, - .free_removed_table = stage2_free_removed_table, + .free_unlinked_table = stage2_free_unlinked_table, .get_page = kvm_host_get_page, .put_page = kvm_s2_put_page, .page_count = kvm_host_page_count, -- 2.40.0.577.gac1e443424-goog