From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e28smtp09.in.ibm.com (e28smtp09.in.ibm.com [122.248.162.9]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e28smtp09.in.ibm.com", Issuer "GeoTrust SSL CA" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 9ECC42C042B for ; Tue, 22 Oct 2013 22:41:34 +1100 (EST) Received: from /spool/local by e28smtp09.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 22 Oct 2013 17:11:30 +0530 Received: from d28relay04.in.ibm.com (d28relay04.in.ibm.com [9.184.220.61]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id B619A8E925E for ; Tue, 22 Oct 2013 17:00:07 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay04.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r9MBSW6g12124360 for ; Tue, 22 Oct 2013 16:58:33 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r9MBSZDp023254 for ; Tue, 22 Oct 2013 16:58:35 +0530 From: "Aneesh Kumar K.V" To: benh@kernel.crashing.org, paulus@samba.org, linux-mm@kvack.org Subject: [RFC PATCH 8/9] powerpc: mm: Support setting _PAGE_NUMA bit on pmd entry which are pointer to PTE page Date: Tue, 22 Oct 2013 16:58:19 +0530 Message-Id: <1382441300-1513-9-git-send-email-aneesh.kumar@linux.vnet.ibm.com> In-Reply-To: <1382441300-1513-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1382441300-1513-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: "Aneesh Kumar K.V" Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/pgtable-ppc64.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h index 46db094..f828944 100644 --- a/arch/powerpc/include/asm/pgtable-ppc64.h +++ b/arch/powerpc/include/asm/pgtable-ppc64.h @@ -150,8 +150,22 @@ #define pmd_set(pmdp, pmdval) (pmd_val(*(pmdp)) = (pmdval)) #define pmd_none(pmd) (!pmd_val(pmd)) -#define pmd_bad(pmd) (!is_kernel_addr(pmd_val(pmd)) \ - || (pmd_val(pmd) & PMD_BAD_BITS)) + +static inline int pmd_bad(pmd_t pmd) +{ +#ifdef CONFIG_NUMA_BALANCING + /* + * For numa balancing we can have this set + */ + if (pmd_val(pmd) & _PAGE_NUMA) + return 0; +#endif + if (!is_kernel_addr(pmd_val(pmd)) || + (pmd_val(pmd) & PMD_BAD_BITS)) + return 1; + return 0; +} + #define pmd_present(pmd) (pmd_val(pmd) != 0) #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0) #define pmd_page_vaddr(pmd) (pmd_val(pmd) & ~PMD_MASKED_BITS) -- 1.8.3.2