Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932935AbWKLPpd (ORCPT ); Sun, 12 Nov 2006 10:45:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932936AbWKLPpd (ORCPT ); Sun, 12 Nov 2006 10:45:33 -0500 Received: from mga03.intel.com ([143.182.124.21]:38749 "EHLO mga03.intel.com") by vger.kernel.org with ESMTP id S932935AbWKLPpc convert rfc822-to-8bit (ORCPT ); Sun, 12 Nov 2006 10:45:32 -0500 X-ExtLoop1: 1 X-IronPort-AV: i="4.09,414,1157353200"; d="scan'208"; a="144998649:sNHT26783953" X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Subject: [PATCH 2.6.18.2] EFI: mapping memory region of runtime services when using memmap kernel parameter Date: Sun, 12 Nov 2006 17:45:26 +0200 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [PATCH 2.6.18.2] EFI: mapping memory region of runtime services when using memmap kernel parameter thread-index: AccGcZK/LK2WA67/QtKDjoY/2v3DnA== From: "Myaskouvskey, Artiom" To: , Cc: , "Narayanan, Chandramouli" , "Jiossy, Rami" , "Satt, Shai" X-OriginalArrivalTime: 12 Nov 2006 15:45:27.0586 (UTC) FILETIME=[934F3020:01C70671] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2479 Lines: 85 From: Artiom Myaskouvskey When using memmap kernel parameter in EFI boot we should also map memory regions of runtime services to enable their mapping later. Signed-off-by: Artiom Myaskouvskey --- diff -uprN linux-2.6.18.2.orig/arch/i386/kernel/setup.c linux-2.6.18.2/arch/i386/kernel/setup.c --- linux-2.6.18.2.orig/arch/i386/kernel/setup.c 2006-11-12 11:22:22.000000000 +0200 +++ linux-2.6.18.2/arch/i386/kernel/setup.c 2006-11-12 16:31:32.000000000 +0200 @@ -364,28 +364,44 @@ static void __init probe_roms(void) } } +extern int is_available_memory(efi_memory_desc_t * md); + static void __init limit_regions(unsigned long long size) { unsigned long long current_addr = 0; - int i; + int i , j; - if (efi_enabled) { - efi_memory_desc_t *md; - void *p; + if (efi_enabled) { + efi_memory_desc_t *md, *next_md = 0; + void *p, *p1; - for (p = memmap.map, i = 0; p < memmap.map_end; + for (p = memmap.map, i = 0,j = 0, p1 = memmap.map; p < memmap.map_end; p += memmap.desc_size, i++) { md = p; + next_md = p1; current_addr = md->phys_addr + (md->num_pages << 12); - if (md->type == EFI_CONVENTIONAL_MEMORY) { - if (current_addr >= size) { - md->num_pages -= - (((current_addr-size) + PAGE_SIZE-1) >> PAGE_SHIFT); - memmap.nr_map = i + 1; - return; + if (is_available_memory(md)) { + if (md->phys_addr >= size) continue; + memcpy(next_md, md, memmap.desc_size); + if (current_addr >= size) { + next_md->num_pages -= (((current_addr-size) + PAGE_SIZE-1) >> PAGE_SHIFT); } + p1 += memmap.desc_size; + next_md = p1; + j++; } - } + else if ((md->attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) { + /* In order to make runtime services available we have to include runtime + * memory regions in memory map */ + memcpy(next_md, md, memmap.desc_size); + p1 += memmap.desc_size; + next_md = p1; + j++; + } + } + memmap.nr_map = j; + memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size); + return; } for (i = 0; i < e820.nr_map; i++) { current_addr = e820.map[i].addr + e820.map[i].size; - 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/