From mboxrd@z Thu Jan 1 00:00:00 1970 From: Petr Tesarik Subject: Proper place for an overview of Xen virtual space Date: Thu, 26 Jul 2012 11:29:21 +0200 Message-ID: <201207261129.22383.ptesarik@suse.cz> Mime-Version: 1.0 Content-Type: Multipart/Mixed; boundary="Boundary-00=_y3QEQlIaUiRpGpI" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org --Boundary-00=_y3QEQlIaUiRpGpI Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hello all, while working on makedumpfile support of Xen4, I made a side-by-side comparison of the Xen3 and Xen4 virtual space on x86_64 (attached). I believe that it can be useful to others as well, but I don't know what would be an appropriate place for it. Regards, Petr Tesarik SUSE Linux --Boundary-00=_y3QEQlIaUiRpGpI Content-Type: text/html; charset="us-ascii"; name="xen-memmap.html" Content-Transfer-Encoding: 7bit Content-Description: Xen Virtual Memory Map Content-Disposition: attachment; filename="xen-memmap.html" Xen Memory Map
Range Xen3 Xen4
0x0000000000000000
0x00007fffffffffff		 [128T] Guest-defined use
0x0000800000000000
0xffff7fffffffffff		 [16E] Inaccessible
0xffff800000000000
0xffff803fffffffff		 [256G] Read-only machine-to-phys translation table (GUEST ACCESSIBLE)
0xffff804000000000
0xffff807fffffffff		 [256G] Reserved for future shared info with the guest OS (GUEST ACCESSIBLE)
0xffff808000000000
0xffff80ffffffffff		 [512G] Reserved for future use [512G] ioremap for PCI mmconfig space
0xffff810000000000
0xffff817fffffffff		 [512G] Guest linear page table
0xffff818000000000
0xffff81ffffffffff		 [512G] Shadow linear page table
0xffff820000000000
0xffff827fffffffff		 [512G] Per-domain mappings (e.g., GDT, LDT)
0xffff828000000000
0xffff8283ffffffff		 [16G] Machine-to-phys translation table [256G] Machine-to-phys translation table
0xffff828400000000
0xffff8287ffffffff		 [16G] Page-frame information array
0xffff828800000000
0xffff828bffffffff		 [16G] ioremap()/fixmap area
0xffff828c00000000
0xffff828c3fffffff		 [1G] Compatibility machine-to-phys translation table
0xffff828c40000000
0xffff828c7fffffff		 [1G] High read-only compat machine-to-phys translation table
0xffff828c80000000
0xffff828cbfffffff		 [1G] Xen text, static data, bss
0xffff828cc0000000
0xffff82bfffffffff		 [461G] Reserved for future use
0xffff82c000000000
0xffff82c3ffffffff		 [16G] ioremap()/fixmap area
0xffff82c400000000
0xffff82c43fffffff		 [1G] Compatibility machine-to-phys translation table
0xffff82c440000000
0xffff82c47fffffff		 [1G] High read-only compat machine-to-phys translation table
0xffff82c480000000
0xffff82c4bfffffff		 [1G] Xen text, static data, bss
0xffff82c4c0000000
0xffff82f5ffffffff		 [197G] Reserved for future use
0xffff82f600000000
0xffff82ffffffffff		 [40G] Page-frame information array
0xffff830000000000
0xffff83ffffffffff		 [1T] 1:1 direct mapping of all physical memory [5T] 1:1 direct mapping of all physical memory
0xffff840000000000
0xffff87ffffffffff		 [4T] Reserved for future use
0xffff880000000000
0xffffffffffffffff		 [120T] Guest-defined use
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