Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764706AbXHHHOk (ORCPT ); Wed, 8 Aug 2007 03:14:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760412AbXHHHIg (ORCPT ); Wed, 8 Aug 2007 03:08:36 -0400 Received: from mx1.redhat.com ([66.187.233.31]:43895 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760240AbXHHHIf (ORCPT ); Wed, 8 Aug 2007 03:08:35 -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, Glauber de Oliveira Costa , Steven Rostedt Subject: [PATCH 11/25] [PATCH] introduce paravirt_release_pgd() Date: Wed, 8 Aug 2007 01:18:58 -0300 Message-Id: <11865467973510-git-send-email-gcosta@redhat.com> X-Mailer: git-send-email 1.4.4.2 In-Reply-To: <11865467931543-git-send-email-gcosta@redhat.com> References: <11865467522495-git-send-email-gcosta@redhat.com> <11865467592921-git-send-email-gcosta@redhat.com> <1186546763582-git-send-email-gcosta@redhat.com> <11865467662182-git-send-email-gcosta@redhat.com> <11865467702103-git-send-email-gcosta@redhat.com> <11865467741753-git-send-email-gcosta@redhat.com> <11865467773012-git-send-email-gcosta@redhat.com> <11865467812610-git-send-email-gcosta@redhat.com> <1186546785346-git-send-email-gcosta@redhat.com> <1186546789356-git-send-email-gcosta@redhat.com> <11865467931543-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/