From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752292AbdJEVNY (ORCPT ); Thu, 5 Oct 2017 17:13:24 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:25545 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752226AbdJEVNN (ORCPT ); Thu, 5 Oct 2017 17:13:13 -0400 From: Pavel Tatashin To: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, kasan-dev@googlegroups.com, borntraeger@de.ibm.com, heiko.carstens@de.ibm.com, davem@davemloft.net, willy@infradead.org, mhocko@kernel.org, ard.biesheuvel@linaro.org, mark.rutland@arm.com, will.deacon@arm.com, catalin.marinas@arm.com, sam@ravnborg.org, mgorman@techsingularity.net, steven.sistare@oracle.com, daniel.m.jordan@oracle.com, bob.picco@oracle.com Subject: [PATCH v10 08/10] arm64/kasan: use kasan_map_populate() Date: Thu, 5 Oct 2017 17:11:22 -0400 Message-Id: <20171005211124.26524-9-pasha.tatashin@oracle.com> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20171005211124.26524-1-pasha.tatashin@oracle.com> References: <20171005211124.26524-1-pasha.tatashin@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To optimize the performance of struct page initialization, vmemmap_populate() will no longer zero memory. Therefore, we must use a new interface to allocate and map kasan shadow memory, that also zeroes memory for us. Signed-off-by: Pavel Tatashin --- arch/arm64/mm/kasan_init.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/mm/kasan_init.c b/arch/arm64/mm/kasan_init.c index 81f03959a4ab..b6e92cfa3ea3 100644 --- a/arch/arm64/mm/kasan_init.c +++ b/arch/arm64/mm/kasan_init.c @@ -161,11 +161,11 @@ void __init kasan_init(void) clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END); - vmemmap_populate(kimg_shadow_start, kimg_shadow_end, - pfn_to_nid(virt_to_pfn(lm_alias(_text)))); + kasan_map_populate(kimg_shadow_start, kimg_shadow_end, + pfn_to_nid(virt_to_pfn(lm_alias(_text)))); /* - * vmemmap_populate() has populated the shadow region that covers the + * kasan_map_populate() has populated the shadow region that covers the * kernel image with SWAPPER_BLOCK_SIZE mappings, so we have to round * the start and end addresses to SWAPPER_BLOCK_SIZE as well, to prevent * kasan_populate_zero_shadow() from replacing the page table entries @@ -191,9 +191,9 @@ void __init kasan_init(void) if (start >= end) break; - vmemmap_populate((unsigned long)kasan_mem_to_shadow(start), - (unsigned long)kasan_mem_to_shadow(end), - pfn_to_nid(virt_to_pfn(start))); + kasan_map_populate((unsigned long)kasan_mem_to_shadow(start), + (unsigned long)kasan_mem_to_shadow(end), + pfn_to_nid(virt_to_pfn(start))); } /* -- 2.14.2