From patchwork Fri Jun 2 16:09:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vipin Sharma X-Patchwork-Id: 13265720 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 C0E68C7EE29 for ; Fri, 2 Jun 2023 17:15:59 +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=QPWYrsEDf/pLQNY84xG7dqXKTYpCMqpBwgxy15X3SQk=; b=d/3pjye7CUWR3BHKtScRSq6gOQ OmXb6UeaRa/SpZlx+4E0F6NbaqeGP1fBJ8A5ZQxlFM0OhzXh/QdoYz7n81R7mESAxTKnFjgohK5oy anK1M0fv/f8KqptVAeyUzXP5crPuw2d+3GNMGcB9oCROP1kvYuu+CAXWbuxjg1m651zK4kMdXkRNg W7i5+NGypWPlSoU3bmU6JtS71JHV8HtC/HNhp/N/qZEOxxqZj+ze5VloZwFbbaqCCEcMveqDK+dyK vnrrIgl9ErAPsHqB3OwaUinGOYakJcKlTWSnwltSGrpQd94mDOSYZ5E1FPHG7O4S6M6JoM/fN1Ubq 7LywFDwQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q58NS-007Vs9-1m; Fri, 02 Jun 2023 17:15:50 +0000 Received: from mail-yw1-x114a.google.com ([2607:f8b0:4864:20::114a]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q57LY-007LR8-2w for linux-riscv@lists.infradead.org; Fri, 02 Jun 2023 16:09:50 +0000 Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-56942442eb0so20414267b3.1 for ; Fri, 02 Jun 2023 09:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685722188; x=1688314188; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=ATfYeV4iZLydVfrv7VkfrrcrF6Iyfqli3wOIB/41cFU=; b=Rqyu16keB0kE0WrdwrfeOOljSmmTEf5ym2HasOLzHF8ArvodVvyp0S6Lr0lp8jhqaO yU7vlRlNbGqDi7zvQpbHT6R5zFRE8DckASYhOzfH9V34Q20hh77zuuNe12GxNtHCZXh5 lnbwZ2Svz+2HB81mY68YPRkYswYr7F2GvqW0LS+zjsO1U81VkyPUwY6eD2Ki1IgFqmLS 03LcT6Q3zPmFBx5Lk1wR2QR7kJ2u+CVAlb7S/W7GXhPrjwIAChkVcnGC08nkCFgLZ6+3 IJyon3TZZUbxyP2iFDZRsS+2chcqzC8RuTMktYv6Efxwhi8TOTgmYLyH3MqqUylTOe6h 6cPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685722188; x=1688314188; 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=ATfYeV4iZLydVfrv7VkfrrcrF6Iyfqli3wOIB/41cFU=; b=d9fvOoAet85GeawvswVREPJq9kF/GAWOuOtWEdrGtcCZT3FKqueTX+7u2xOpBm2Jsl rUz7cW0pEvPP0cNxyYtCVzJ9iMA0imgeL4fxoONcGjG43IjbkNEMc+9+uHCwSZpoPZ8H Z9II9R2aBGVFC1T2aWBkVv1VELg1gtp9Ag1nPlP1ftEcMbMdWkrP9YdKfAaizff9pGJe AbFaBAEaibgxy1+Oy15PuTkUcOJGH0wSxypGUOETtB40hfQr+b4mdPSt44az/PjqM0Jh /Eoa02Hmz/qJ3MuxiurA6N0NRtcPquX4PJLR8KNhnDNAlZsRyIjtASgIVHFwL8e4cb49 yfNA== X-Gm-Message-State: AC+VfDz1EOeIbIKt1oeDnn36Ui5exrYQBJRStmS3RaWlU0oIdVSGrAa2 iaOyWh8d0V9Sf+fw8Kj4JpOBWaNjvmPV X-Google-Smtp-Source: ACHHUZ4IW8kR8j7bn7igS1kcMhvfZS4XncKRF7NLGQ8SgKKpwW4y3+9yGIJ+PiwzD8LO4pWUxsLhYeKpfotT X-Received: from vipin.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:479f]) (user=vipinsh job=sendgmr) by 2002:a25:e706:0:b0:bac:5d2c:844b with SMTP id e6-20020a25e706000000b00bac5d2c844bmr1305917ybh.8.1685722187745; Fri, 02 Jun 2023 09:09:47 -0700 (PDT) Date: Fri, 2 Jun 2023 09:09:12 -0700 In-Reply-To: <20230602160914.4011728-1-vipinsh@google.com> Mime-Version: 1.0 References: <20230602160914.4011728-1-vipinsh@google.com> X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Message-ID: <20230602160914.4011728-15-vipinsh@google.com> Subject: [PATCH v2 14/16] KVM: arm64: Pass page walker flags from callers of stage 2 split walker From: Vipin Sharma To: maz@kernel.org, oliver.upton@linux.dev, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, chenhuacai@kernel.org, aleksandar.qemu.devel@gmail.com, tsbogend@alpha.franken.de, anup@brainfault.org, atishp@atishpatra.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, seanjc@google.com, pbonzini@redhat.com, dmatlack@google.com, ricarkol@google.com Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Vipin Sharma X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230602_090948_954146_E36F1989 X-CRM114-Status: GOOD ( 12.93 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Pass enum kvm_pgtable_walk_flags{} to kvm_pgtable_stage2_split() walker from its caller. This allows split walker users to specify if they want to run split logic via shared walker or non-shared walker. Signed-off-by: Vipin Sharma --- arch/arm64/include/asm/kvm_pgtable.h | 4 +++- arch/arm64/kvm/hyp/pgtable.c | 5 +++-- arch/arm64/kvm/mmu.c | 2 +- 3 files changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index 145be12a5fc2..fbf5c6c509fb 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -684,6 +684,7 @@ int kvm_pgtable_stage2_flush(struct kvm_pgtable *pgt, u64 addr, u64 size, * @size: Size of the range. * @mc: Cache of pre-allocated and zeroed memory from which to allocate * page-table pages. + * @flags: Page walker flags * * The function tries to split any level 1 or 2 entry that overlaps * with the input range (given by @addr and @size). @@ -693,7 +694,8 @@ int kvm_pgtable_stage2_flush(struct kvm_pgtable *pgt, u64 addr, u64 size, * blocks in the input range as allowed by @mc_capacity. */ int kvm_pgtable_stage2_split(struct kvm_pgtable *pgt, u64 addr, u64 size, - struct kvm_mmu_memory_cache *mc); + struct kvm_mmu_memory_cache *mc, + enum kvm_pgtable_walk_flags flags); /** * kvm_pgtable_walk() - Walk a page-table. diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c index 23cda3de2dd4..7e84be13d76d 100644 --- a/arch/arm64/kvm/hyp/pgtable.c +++ b/arch/arm64/kvm/hyp/pgtable.c @@ -1408,11 +1408,12 @@ static int stage2_split_walker(const struct kvm_pgtable_visit_ctx *ctx, } int kvm_pgtable_stage2_split(struct kvm_pgtable *pgt, u64 addr, u64 size, - struct kvm_mmu_memory_cache *mc) + struct kvm_mmu_memory_cache *mc, + enum kvm_pgtable_walk_flags flags) { struct kvm_pgtable_walker walker = { .cb = stage2_split_walker, - .flags = KVM_PGTABLE_WALK_LEAF, + .flags = flags | KVM_PGTABLE_WALK_LEAF, .arg = mc, }; diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 7c966f6f1a41..34d2bd03cf5f 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -153,7 +153,7 @@ static int kvm_mmu_split_huge_pages(struct kvm *kvm, phys_addr_t addr, return -EINVAL; next = __stage2_range_addr_end(addr, end, chunk_size); - ret = kvm_pgtable_stage2_split(pgt, addr, next - addr, cache); + ret = kvm_pgtable_stage2_split(pgt, addr, next - addr, cache, 0); if (ret) break; } while (addr = next, addr != end);