From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 A3E19192B69 for ; Thu, 23 Jan 2025 17:24:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737653088; cv=none; b=tUpqtzKenpsYdJ/8wyrtkHas86HHTqcsbqoacCX3NMdRvuGNIK1PQrSyfR7SukM1v7VB9+ZyuikgKMerRg/TnMOHePTN197xtcCtBASrQ4YZPXuL+4lpL3REneefu2+OFIW3n9zvAoYovshN7dGAsAH8eZdu9OpxWhVgz7BVUIM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737653088; c=relaxed/simple; bh=/77knIGlw2uTP8jjNDQPBXLHTXNvLaEs3w0Yu4B3ZF4=; h=Subject:To:Cc:From:Date:References:In-Reply-To:Message-Id; b=UBlTgeU53sutfWltibueJv4Fwc//wtMTX7PEn8EU1xIoxLyjrLWtOmkXoUjQJ9qzVopzl3/LUGST0NxY6En04FED1d2AePUDGdykGDTQmfv5JoFmMVaCZwoiNPM4Fu40rR5By3TIeVMG99BVGdhJ/ijbKKOHB7lfGfaC5OGekIs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Ut1NQWhM; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Ut1NQWhM" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1737653087; x=1769189087; h=subject:to:cc:from:date:references:in-reply-to: message-id; bh=/77knIGlw2uTP8jjNDQPBXLHTXNvLaEs3w0Yu4B3ZF4=; b=Ut1NQWhMFcDY6awPn3WMz9bVKqGIa0Yp4uRqkZK77XmnfYDvbJ5VXm0C O3yFwHkzuZgZdVuoSNQUCH8lHjuNJlgs2nwstgr7AhdDKHC456mBae727 yUYbRAsmiHpjGYAFzYC94O5PkGtVJyeyoOQWm28a3LQMIH6/3e4x1EW3u u+QVXllOBqM3ZvKNURVhpKI3ioDwpfxZECr9CXhy2Q4CEEoT8HMrKuSBC Jq3dXLih8DyW0n2ghhi5eMPsvKwx9V1WHRdWVOEpwAG1F8NXB7V71uMhW vDQfcJRn/e0aFbV8HQbW097CIyL7ywlXViYZv4WIiI7K45Yo19NwtdWGQ w==; X-CSE-ConnectionGUID: JxDo+mrtQ8mYoovEQ1oPyQ== X-CSE-MsgGUID: 0bOUDmLnRgObfUfnpHeuYg== X-IronPort-AV: E=McAfee;i="6700,10204,11314"; a="49583909" X-IronPort-AV: E=Sophos;i="6.12,310,1728975600"; d="scan'208";a="49583909" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2025 09:24:40 -0800 X-CSE-ConnectionGUID: Lc6hvdiOSzKY5BA0Ek4+ww== X-CSE-MsgGUID: KLaPJ+ASRJq7lONKRk7b7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,229,1732608000"; d="scan'208";a="107650009" Received: from davehans-spike.ostc.intel.com (HELO localhost.localdomain) ([10.165.164.11]) by fmviesa008.fm.intel.com with ESMTP; 23 Jan 2025 09:24:40 -0800 Subject: [RFC][PATCH 7/8] x86/mm: Remove duplicated PMD preallocation macro To: linux-kernel@vger.kernel.org Cc: x86@kernel.org,tglx@linutronix.de,bp@alien8.de,joro@8bytes.org,luto@kernel.org,peterz@infradead.org,kirill.shutemov@linux.intel.com,rick.p.edgecombe@intel.com,jgross@suse.com,Dave Hansen From: Dave Hansen Date: Thu, 23 Jan 2025 09:24:39 -0800 References: <20250123172428.D6D8C8D9@davehans-spike.ostc.intel.com> In-Reply-To: <20250123172428.D6D8C8D9@davehans-spike.ostc.intel.com> Message-Id: <20250123172439.1DDF556B@davehans-spike.ostc.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Dave Hansen MAX_PREALLOCATED_PMDS and PREALLOCATED_PMDS are now identical. Just use PREALLOCATED_PMDS and remove "MAX". Signed-off-by: Dave Hansen --- b/arch/x86/mm/pgtable.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff -puN arch/x86/mm/pgtable.c~simplify-PREALLOCATED_PMDS-4 arch/x86/mm/pgtable.c --- a/arch/x86/mm/pgtable.c~simplify-PREALLOCATED_PMDS-4 2025-01-23 09:20:53.030432670 -0800 +++ b/arch/x86/mm/pgtable.c 2025-01-23 09:20:53.034432814 -0800 @@ -157,7 +157,6 @@ static void pgd_dtor(pgd_t *pgd) * new process's life, we just pre-populate them here. */ #define PREALLOCATED_PMDS PTRS_PER_PGD -#define MAX_PREALLOCATED_PMDS PTRS_PER_PGD /* * "USER_PMDS" are the PMDs for the user copy of the page tables when @@ -193,7 +192,6 @@ void pud_populate(struct mm_struct *mm, /* No need to prepopulate any pagetable entries in non-PAE modes. */ #define PREALLOCATED_PMDS 0 -#define MAX_PREALLOCATED_PMDS 0 #define PREALLOCATED_USER_PMDS 0 #define MAX_PREALLOCATED_USER_PMDS 0 #endif /* CONFIG_X86_PAE */ @@ -364,7 +362,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { pgd_t *pgd; pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS]; - pmd_t *pmds[MAX_PREALLOCATED_PMDS]; + pmd_t *pmds[PREALLOCATED_PMDS]; pgd = _pgd_alloc(); _