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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8889C433E1 for ; Fri, 5 Jun 2020 21:39:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FC8920772 for ; Fri, 5 Jun 2020 21:39:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728720AbgFEVja (ORCPT ); Fri, 5 Jun 2020 17:39:30 -0400 Received: from mga04.intel.com ([192.55.52.120]:22543 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728575AbgFEVjP (ORCPT ); Fri, 5 Jun 2020 17:39:15 -0400 IronPort-SDR: yuD6hRQ4pisqbucPDw4QepLIhST56Nz/0v1lUGRnwqaHY1DpyRmSmoykwvUvA971YqVsmOQQcK Zx3UE9zULZ4A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2020 14:39:10 -0700 IronPort-SDR: UApdX2pDl3fRM1vKBYmeGIGSCrbxLOiz1oEqh+Z4ZPPvw2XH7q+LtyxLP9QuO8zoRrUvjzDuhE dQCt5cOpa0dw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,477,1583222400"; d="scan'208";a="287860925" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.152]) by orsmga002.jf.intel.com with ESMTP; 05 Jun 2020 14:39:09 -0700 From: Sean Christopherson To: Marc Zyngier , Paul Mackerras , Christian Borntraeger , Janosch Frank , Paolo Bonzini Cc: James Morse , Julien Thierry , Suzuki K Poulose , David Hildenbrand , Cornelia Huck , Claudio Imbrenda , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Feiner , Peter Shier , Junaid Shahid , Ben Gardon , Christoffer Dall Subject: [PATCH 19/21] KVM: MIPS: Drop @max param from mmu_topup_memory_cache() Date: Fri, 5 Jun 2020 14:38:51 -0700 Message-Id: <20200605213853.14959-20-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200605213853.14959-1-sean.j.christopherson@intel.com> References: <20200605213853.14959-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Replace the @max param in mmu_topup_memory_cache() and instead use ARRAY_SIZE() to terminate the loop to fill the cache. This removes a BUG_ON() and sets the stage for moving MIPS to the common memory cache implementation. No functional change intended. Signed-off-by: Sean Christopherson --- arch/mips/kvm/mmu.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/mips/kvm/mmu.c b/arch/mips/kvm/mmu.c index 7dad7a293eae..94562c54b930 100644 --- a/arch/mips/kvm/mmu.c +++ b/arch/mips/kvm/mmu.c @@ -25,15 +25,13 @@ #define KVM_MMU_CACHE_MIN_PAGES 2 #endif -static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, - int min, int max) +static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, int min) { void *page; - BUG_ON(max > KVM_NR_MEM_OBJS); if (cache->nobjs >= min) return 0; - while (cache->nobjs < max) { + while (cache->nobjs < ARRAY_SIZE(cache->objects)) { page = (void *)__get_free_page(GFP_KERNEL); if (!page) return -ENOMEM; @@ -711,8 +709,7 @@ static int kvm_mips_map_page(struct kvm_vcpu *vcpu, unsigned long gpa, goto out; /* We need a minimum of cached pages ready for page table creation */ - err = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES, - KVM_NR_MEM_OBJS); + err = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES); if (err) goto out; @@ -796,8 +793,7 @@ static pte_t *kvm_trap_emul_pte_for_gva(struct kvm_vcpu *vcpu, int ret; /* We need a minimum of cached pages ready for page table creation */ - ret = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES, - KVM_NR_MEM_OBJS); + ret = mmu_topup_memory_cache(memcache, KVM_MMU_CACHE_MIN_PAGES); if (ret) return NULL; -- 2.26.0