Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752167Ab2JIEky (ORCPT ); Tue, 9 Oct 2012 00:40:54 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:45485 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751008Ab2JIEkt (ORCPT ); Tue, 9 Oct 2012 00:40:49 -0400 From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Jacob Shin , Tejun Heo Cc: Stefano Stabellini , linux-kernel@vger.kernel.org, Yinghai Lu , Konrad Rzeszutek Wilk , Jeremy Fitzhardinge Subject: [PATCH 07/10] x86, xen, mm: Do not need to check if page table is ioremap Date: Mon, 8 Oct 2012 21:39:15 -0700 Message-Id: <1349757558-10856-8-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.7.7 In-Reply-To: <1349757558-10856-1-git-send-email-yinghai@kernel.org> References: <1349757558-10856-1-git-send-email-yinghai@kernel.org> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1311 Lines: 39 All page table buf are pre-mapped, and could use _va to access them. Remove the not needed checking. Signed-off-by: Yinghai Lu Cc: Konrad Rzeszutek Wilk Cc: Jeremy Fitzhardinge --- arch/x86/xen/mmu.c | 8 ++------ 1 files changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 7a769b7..9c0956c 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1412,13 +1412,9 @@ static pte_t __init mask_rw_pte(pte_t *ptep, pte_t pte) /* * If the new pfn is within the range of the newly allocated - * kernel pagetable, and it isn't being mapped into an - * early_ioremap fixmap slot as a freshly allocated page, make sure - * it is RO. + * kernel pagetable, make sure it is RO. */ - if (((!is_early_ioremap_ptep(ptep) && - pfn >= pgt_buf_start && pfn < pgt_buf_top)) || - (is_early_ioremap_ptep(ptep) && pfn != (pgt_buf_end - 1))) + if (pfn >= pgt_buf_start && pfn < pgt_buf_top) pte = pte_wrprotect(pte); return pte; -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/