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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 DEEFEC433E0 for ; Tue, 2 Jun 2020 20:17:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 934E1207DA for ; Tue, 2 Jun 2020 20:17:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="c75Z64Us" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 934E1207DA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 391058007F; Tue, 2 Jun 2020 16:17:31 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3409680052; Tue, 2 Jun 2020 16:17:31 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2575E8007F; Tue, 2 Jun 2020 16:17:31 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0244.hostedemail.com [216.40.44.244]) by kanga.kvack.org (Postfix) with ESMTP id 09E9680052 for ; Tue, 2 Jun 2020 16:17:31 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id BCF7FA7C5A for ; Tue, 2 Jun 2020 20:17:30 +0000 (UTC) X-FDA: 76885381860.30.room10_753f0a170756 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin30.hostedemail.com (Postfix) with ESMTP id A1E601807ED1F for ; Tue, 2 Jun 2020 20:17:30 +0000 (UTC) X-HE-Tag: room10_753f0a170756 X-Filterd-Recvd-Size: 3543 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf23.hostedemail.com (Postfix) with ESMTP for ; Tue, 2 Jun 2020 20:17:30 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EF2C22072F; Tue, 2 Jun 2020 20:17:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591129049; bh=Heis4jzR/R0KrmB37fn6IwSn+7YmhvsX7WEMuEQt9tQ=; h=Date:From:To:Subject:In-Reply-To:From; b=c75Z64UsW66W3uYtOYtPPNGWUvWKk4qCVUCJQHWTw2YvqB4s9S/BXH05M6Mz6c5XA VLKFVmfVYerdsm/INqZI7u35KZYjZ06rDngYuPg/OQymOnh1zPaPXM473J8xjvzX85 Z0Q+E3kVWZU1zGx4Qrv+Y6qMfSVPOfbg/Fjh77I4= Date: Tue, 02 Jun 2020 13:17:28 -0700 From: Andrew Morton To: akpm@linux-foundation.org, arnd@arndb.de, dave.hansen@linux.intel.com, hch@lst.de, hpa@zytor.com, jroedel@suse.de, linux-mm@kvack.org, luto@kernel.org, mhocko@kernel.org, mingo@elte.hu, mm-commits@vger.kernel.org, peterz@infradead.org, rjw@rjwysocki.net, rostedt@goodmis.org, tglx@linutronix.de, torvalds@linux-foundation.org, vbabka@suse.cz, willy@infradead.org Subject: [patch 121/128] x86/mm/64: implement arch_sync_kernel_mappings() Message-ID: <20200602201728.R1g6B-RHw%akpm@linux-foundation.org> In-Reply-To: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: A1E601807ED1F X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Joerg Roedel Subject: x86/mm/64: implement arch_sync_kernel_mappings() Implement the function to sync changes in vmalloc and ioremap ranges to all page-tables. Link: http://lkml.kernel.org/r/20200515140023.25469-5-joro@8bytes.org Signed-off-by: Joerg Roedel Acked-by: Andy Lutomirski Acked-by: Peter Zijlstra (Intel) Cc: Arnd Bergmann Cc: Christoph Hellwig Cc: Dave Hansen Cc: "H . Peter Anvin" Cc: Ingo Molnar Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: "Rafael J. Wysocki" Cc: Steven Rostedt (VMware) Cc: Thomas Gleixner Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- arch/x86/include/asm/pgtable_64_types.h | 2 ++ arch/x86/mm/init_64.c | 5 +++++ 2 files changed, 7 insertions(+) --- a/arch/x86/include/asm/pgtable_64_types.h~x86-mm-64-implement-arch_sync_kernel_mappings +++ a/arch/x86/include/asm/pgtable_64_types.h @@ -159,4 +159,6 @@ extern unsigned int ptrs_per_p4d; #define PGD_KERNEL_START ((PAGE_SIZE / 2) / sizeof(pgd_t)) +#define ARCH_PAGE_TABLE_SYNC_MASK (pgtable_l5_enabled() ? PGTBL_PGD_MODIFIED : PGTBL_P4D_MODIFIED) + #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ --- a/arch/x86/mm/init_64.c~x86-mm-64-implement-arch_sync_kernel_mappings +++ a/arch/x86/mm/init_64.c @@ -218,6 +218,11 @@ void sync_global_pgds(unsigned long star sync_global_pgds_l4(start, end); } +void arch_sync_kernel_mappings(unsigned long start, unsigned long end) +{ + sync_global_pgds(start, end); +} + /* * NOTE: This function is marked __ref because it calls __init function * (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0. _