From nobody Wed Feb 11 07:07:36 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1503160889 for ; Wed, 6 Mar 2024 10:42:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709721760; cv=none; b=M9qqFffp2V4TP5jykgZcN1P8U3sC6v248aZdIALZykelPa/FABprBAc83XrtFg2nkIlmrnpeRerkXsPFUDsXDR591Zj9mbx6gw/6CjnIfNbe9aPAerADr16SeKTx+E39E172S6OmIfiq0cf6IokFWsIuRYkIW7uko1IzqW4jqoI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709721760; c=relaxed/simple; bh=iHHSvsdkBOFub0mcOT/89y75sePdz9RiRVPlZT5QMlQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FkyrDpzoJHjsMGImZId+6L325GUwCM3l3vQ285T9DXumLLu8hJSPZPJreiv2ail7cWSSiw8rFrQRiz13ZJz+y36bUqKS9iMACXk8ClMJ/4NrHlTe1JCMHrDz1xVIlyat8HXW0dfyALz0QR6rga/2Z1LK2xMes7okfi5l6bC8MWI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=JkO5RP0g; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JkO5RP0g" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1709721758; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dXyJDuJosTa0kFBnhKvW1aqbtapsaxz0OHU+bPr+fnc=; b=JkO5RP0goe2Z5de2+dShM6VHr8uPuoFn7SRydombNzkSOdTa91gPqfUfFsv0bJYQUq4fYy F+LXBfx7lR8gc5/IJhYoFzhCpAoroC0NyXU8NhE1RURoh7/AcHo8I5kwxwBsA/JJyClU11 Cd/fy2NjvJab0vaoqHf0Gu95vbMtHPg= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-204-DuM7_ICQNPWc0Qhye-aEuA-1; Wed, 06 Mar 2024 05:42:34 -0500 X-MC-Unique: DuM7_ICQNPWc0Qhye-aEuA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 068C21C05AED; Wed, 6 Mar 2024 10:42:34 +0000 (UTC) Received: from x1n.redhat.com (unknown [10.72.116.8]) by smtp.corp.redhat.com (Postfix) with ESMTP id D10DC111DCFF; Wed, 6 Mar 2024 10:42:26 +0000 (UTC) From: peterx@redhat.com To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org, Andrew Morton , Muchun Song , Jason Gunthorpe , peterx@redhat.com, Matthew Wilcox , Mike Rapoport , Christophe Leroy , x86@kernel.org, sparclinux@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "David S . Miller" , Andreas Larsson Subject: [PATCH RFC 05/13] mm/sparc: Change pXd_huge() behavior to exclude swap entries Date: Wed, 6 Mar 2024 18:41:39 +0800 Message-ID: <20240306104147.193052-6-peterx@redhat.com> In-Reply-To: <20240306104147.193052-1-peterx@redhat.com> References: <20240306104147.193052-1-peterx@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.3 Content-Type: text/plain; charset="utf-8" From: Peter Xu Please refer to the previous patch on the reasoning for x86. Now sparc is the only architecture that will allow swap entries to be reported as pXd_huge(). After this patch, all architectures should forbid swap entries in pXd_huge(). Cc: David S. Miller Cc: Andreas Larsson Cc: sparclinux@vger.kernel.org Signed-off-by: Peter Xu --- arch/sparc/mm/hugetlbpage.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c index b432500c13a5..d31c2cec35c9 100644 --- a/arch/sparc/mm/hugetlbpage.c +++ b/arch/sparc/mm/hugetlbpage.c @@ -409,14 +409,12 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, u= nsigned long addr, =20 int pmd_huge(pmd_t pmd) { - return !pmd_none(pmd) && - (pmd_val(pmd) & (_PAGE_VALID|_PAGE_PMD_HUGE)) !=3D _PAGE_VALID; + return pmd_leaf(pmd);; } =20 int pud_huge(pud_t pud) { - return !pud_none(pud) && - (pud_val(pud) & (_PAGE_VALID|_PAGE_PUD_HUGE)) !=3D _PAGE_VALID; + return pud_leaf(pud); } =20 static void hugetlb_free_pte_range(struct mmu_gather *tlb, pmd_t *pmd, --=20 2.44.0