From nobody Wed Apr 8 03:06:10 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB106FA373E for ; Fri, 21 Oct 2022 16:37:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230310AbiJUQhw (ORCPT ); Fri, 21 Oct 2022 12:37:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230421AbiJUQh3 (ORCPT ); Fri, 21 Oct 2022 12:37:29 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A30AA27B560 for ; Fri, 21 Oct 2022 09:37:24 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-367dc159c2fso33838717b3.19 for ; Fri, 21 Oct 2022 09:37:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=IUxkfzPpYKN6asWxOUK5hNSN6fMNkS8/sAXTNszQZDU=; b=KyHaYNZ4pYGCB/ViwdCe6ocu1GDgb5YvODnNgAb9mCc41is/HzCKWGlBYl+zSC2M7R wDxY0MPGeDl4H+0C+mB6AFFSBWs3XZbwRg6SRGwAx5hUQbyU0q2y7YE3x3g1mN6R7kOL mmsmmdI260xt2gPS3NqKTeMLpZZsslNcjBFK0FPPuqtHMPONuhEMnH8tH2tsucIOb/sf djUB2qYtnGhphrore61r1cmnFMRrRh4uh4EhSpubCR4MBBVW+CoIXhmSmouk+6a8lUUx XMYWqrbERhGrTAQJzZPB/mpCFUGWWYrvH6mlo2sZFv3G70Q1lmcsgtXbK8JdDbqteunh HYwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=IUxkfzPpYKN6asWxOUK5hNSN6fMNkS8/sAXTNszQZDU=; b=gMkWMVwBAMjeZmC5mjvOl02uJNZTZLJ6Tfy5rg0H+wCm2MjZmSoL7j3Ixuu54he+Ol qnwcavChW1oXU0eFkUP0WvRCA7KMUWyYQ4d3fNlBYiqBgfXA+EoZpYLSWbb1EsYOjwO0 9wVCXua1XPTJPfNRxuhXAUcPTYvb7rvDSO8QSsr8MgvA+ZJ53rgkJNyVMCQcwhG/V6OX +cmWESx1E/Wl826M5vnQ1cx0bvoRHADYIWw32V15pIQWezj0l9sljOdxK2m69l9m3/7n JeZc6uKbvU51c3n7Mi93dboiiAiAwKMpl20MOB+KgbbDN1CgCaSfKIj4uuFk6qAOqZ8X /raw== X-Gm-Message-State: ACrzQf0KWd5sI6zwHhRvJ+ehCqlJxI62xQ/EqLcOnEnxvSAEdzGGnD6z nZOEDWsu+3ErMEFnYzg41EdnP+tp9jvdcWoc X-Google-Smtp-Source: AMsMyM4vp8fYTq3qDzC4UTof6qxcqVOi/s+AdXdyXBlWQIteH9csXgDzlKMfMAxWzbToL+1hNLKr/pzgUDQtkmZ8 X-Received: from jthoughton.c.googlers.com ([fda3:e722:ac3:cc00:14:4d90:c0a8:2a4f]) (user=jthoughton job=sendgmr) by 2002:a25:790d:0:b0:670:6032:b1df with SMTP id u13-20020a25790d000000b006706032b1dfmr16600775ybc.629.1666370243225; Fri, 21 Oct 2022 09:37:23 -0700 (PDT) Date: Fri, 21 Oct 2022 16:36:23 +0000 In-Reply-To: <20221021163703.3218176-1-jthoughton@google.com> Mime-Version: 1.0 References: <20221021163703.3218176-1-jthoughton@google.com> X-Mailer: git-send-email 2.38.0.135.g90850a2211-goog Message-ID: <20221021163703.3218176-8-jthoughton@google.com> Subject: [RFC PATCH v2 07/47] hugetlb: add CONFIG_HUGETLB_HIGH_GRANULARITY_MAPPING From: James Houghton To: Mike Kravetz , Muchun Song , Peter Xu Cc: David Hildenbrand , David Rientjes , Axel Rasmussen , Mina Almasry , "Zach O'Keefe" , Manish Mishra , Naoya Horiguchi , "Dr . David Alan Gilbert" , "Matthew Wilcox (Oracle)" , Vlastimil Babka , Baolin Wang , Miaohe Lin , Yang Shi , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, James Houghton Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This adds the Kconfig to enable or disable high-granularity mapping. Each architecture must explicitly opt-in to it (via ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING), but when opted in, HGM will be enabled by default if HUGETLB_PAGE is enabled. Signed-off-by: James Houghton --- fs/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/Kconfig b/fs/Kconfig index 2685a4d0d353..ce2567946016 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -267,6 +267,13 @@ config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON enable HVO by default. It can be disabled via hugetlb_free_vmemmap=3Doff (boot command line) or hugetlb_optimize_vmemmap (sysctl). =20 +config ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING + bool + +config HUGETLB_HIGH_GRANULARITY_MAPPING + def_bool HUGETLB_PAGE + depends on ARCH_WANT_HUGETLB_HIGH_GRANULARITY_MAPPING + config MEMFD_CREATE def_bool TMPFS || HUGETLBFS =20 --=20 2.38.0.135.g90850a2211-goog