Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763460AbXHOM6W (ORCPT ); Wed, 15 Aug 2007 08:58:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761471AbXHOMye (ORCPT ); Wed, 15 Aug 2007 08:54:34 -0400 Received: from mx1.redhat.com ([66.187.233.31]:56067 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761628AbXHOMyc (ORCPT ); Wed, 15 Aug 2007 08:54:32 -0400 From: Glauber de Oliveira Costa To: linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, rusty@rustcorp.com.au, ak@suse.de, mingo@elte.hu, chrisw@sous-sol.org, jeremy@goop.org, avi@qumranet.com, anthony@codemonkey.ws, virtualization@lists.linux-foundation.org, lguest@ozlabs.org, glommer@gmail.com, Glauber de Oliveira Costa , Steven Rostedt Subject: [PATCH 17/25][V3] introduce paravirt_release_pgd() Date: Wed, 15 Aug 2007 09:49:37 -0300 Message-Id: <11871823892519-git-send-email-gcosta@redhat.com> X-Mailer: git-send-email 1.5.0.6 In-Reply-To: <11871823782610-git-send-email-gcosta@redhat.com> References: <11871821854176-git-send-email-gcosta@redhat.com> <1187182197314-git-send-email-gcosta@redhat.com> <11871822062386-git-send-email-gcosta@redhat.com> <11871822163867-git-send-email-gcosta@redhat.com> <11871822244170-git-send-email-gcosta@redhat.com> <11871822342754-git-send-email-gcosta@redhat.com> <11871822421713-git-send-email-gcosta@redhat.com> <1187182253740-git-send-email-gcosta@redhat.com> <1187182268408-git-send-email-gcosta@redhat.com> <1187182282913-git-send-email-gcosta@redhat.com> <11871822951747-git-send-email-gcosta@redhat.com> <11871823042011-git-send-email-gcosta@redhat.com> <11871823151789-git-send-email-gcosta@redhat.com> <11871823273810-git-send-email-gcosta@redhat.com> <11871823373106-git-send-email-gcosta@redhat.com> <11871823673236-git-send-email-gcosta@redhat.com> <11871823782610-git-send-email-gcosta@redhat.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1471 Lines: 43 This patch introduces a new macro/function that informs a paravirt guest when its page table is not more in use, and can be released. In case we're not paravirt, just do nothing. Signed-off-by: Glauber de Oliveira Costa Signed-off-by: Steven Rostedt --- include/asm-x86_64/pgalloc.h | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/include/asm-x86_64/pgalloc.h b/include/asm-x86_64/pgalloc.h index b467be6..dbe1267 100644 --- a/include/asm-x86_64/pgalloc.h +++ b/include/asm-x86_64/pgalloc.h @@ -9,6 +9,12 @@ #define QUICK_PGD 0 /* We preserve special mappings over free */ #define QUICK_PT 1 /* Other page table pages that are zero on free */ +#ifdef CONFIG_PARAVIRT +#include +#else +#define paravirt_release_pgd(pgd) do { } while (0) +#endif + #define pmd_populate_kernel(mm, pmd, pte) \ set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte))) #define pud_populate(mm, pud, pmd) \ @@ -100,6 +106,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm) static inline void pgd_free(pgd_t *pgd) { BUG_ON((unsigned long)pgd & (PAGE_SIZE-1)); + paravirt_release_pgd(pgd); quicklist_free(QUICK_PGD, pgd_dtor, pgd); } -- 1.4.4.2 - 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/