From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fengguang Wu Subject: [RFC][PATCH v2 11/21] kvm: allocate page table pages from DRAM Date: Wed, 26 Dec 2018 21:14:57 +0800 Message-ID: <20181226133351.703380444@intel.com> References: <20181226131446.330864849@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: Linux Memory Management List , Yao Yuan , Fengguang Wu To: Andrew Morton Return-path: cc: kvm@vger.kernel.org Cc: LKML cc: Fan Du cc: Peng Dong cc: Huang Ying CC: Liu Jingqi cc: Dong Eddie cc: Dave Hansen cc: Zhang Yi cc: Dan Williams Content-Disposition: inline; filename=0001-kvm-allocate-page-table-pages-from-DRAM.patch Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org From: Yao Yuan Signed-off-by: Yao Yuan Signed-off-by: Fengguang Wu --- arch/x86/kvm/mmu.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) --- linux.orig/arch/x86/kvm/mmu.c 2018-12-26 20:54:48.846720344 +0800 +++ linux/arch/x86/kvm/mmu.c 2018-12-26 20:54:48.842719614 +0800 @@ -950,6 +950,16 @@ static void mmu_free_memory_cache(struct kmem_cache_free(cache, mc->objects[--mc->nobjs]); } +static unsigned long __get_dram_free_pages(gfp_t gfp_mask) +{ + struct page *page; + + page = __alloc_pages(GFP_KERNEL_ACCOUNT, 0, numa_node_id()); + if (!page) + return 0; + return (unsigned long) page_address(page); +} + static int mmu_topup_memory_cache_page(struct kvm_mmu_memory_cache *cache, int min) { @@ -958,7 +968,7 @@ static int mmu_topup_memory_cache_page(s if (cache->nobjs >= min) return 0; while (cache->nobjs < ARRAY_SIZE(cache->objects)) { - page = (void *)__get_free_page(GFP_KERNEL_ACCOUNT); + page = (void *)__get_dram_free_pages(GFP_KERNEL_ACCOUNT); if (!page) return cache->nobjs >= min ? 0 : -ENOMEM; cache->objects[cache->nobjs++] = page; From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f197.google.com (mail-pf1-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id 522698E0008 for ; Wed, 26 Dec 2018 08:37:07 -0500 (EST) Received: by mail-pf1-f197.google.com with SMTP id q64so17734186pfa.18 for ; Wed, 26 Dec 2018 05:37:07 -0800 (PST) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTPS id r12si1487152plo.59.2018.12.26.05.37.06 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 26 Dec 2018 05:37:06 -0800 (PST) Message-Id: <20181226133351.703380444@intel.com> Date: Wed, 26 Dec 2018 21:14:57 +0800 From: Fengguang Wu Subject: [RFC][PATCH v2 11/21] kvm: allocate page table pages from DRAM References: <20181226131446.330864849@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline; filename=0001-kvm-allocate-page-table-pages-from-DRAM.patch Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Linux Memory Management List , Yao Yuan , Fengguang Wu , kvm@vger.kernel.org, LKML , Fan Du , Peng Dong , Huang Ying , Liu Jingqi , Dong Eddie , Dave Hansen , Zhang Yi , Dan Williams From: Yao Yuan Signed-off-by: Yao Yuan Signed-off-by: Fengguang Wu --- arch/x86/kvm/mmu.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) --- linux.orig/arch/x86/kvm/mmu.c 2018-12-26 20:54:48.846720344 +0800 +++ linux/arch/x86/kvm/mmu.c 2018-12-26 20:54:48.842719614 +0800 @@ -950,6 +950,16 @@ static void mmu_free_memory_cache(struct kmem_cache_free(cache, mc->objects[--mc->nobjs]); } +static unsigned long __get_dram_free_pages(gfp_t gfp_mask) +{ + struct page *page; + + page = __alloc_pages(GFP_KERNEL_ACCOUNT, 0, numa_node_id()); + if (!page) + return 0; + return (unsigned long) page_address(page); +} + static int mmu_topup_memory_cache_page(struct kvm_mmu_memory_cache *cache, int min) { @@ -958,7 +968,7 @@ static int mmu_topup_memory_cache_page(s if (cache->nobjs >= min) return 0; while (cache->nobjs < ARRAY_SIZE(cache->objects)) { - page = (void *)__get_free_page(GFP_KERNEL_ACCOUNT); + page = (void *)__get_dram_free_pages(GFP_KERNEL_ACCOUNT); if (!page) return cache->nobjs >= min ? 0 : -ENOMEM; cache->objects[cache->nobjs++] = page;