[Xen-devel] Proper place for an overview of Xen virtual space

[Petr Tesarik <ptesarik@xxxxxxx>]

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

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

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel