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[Xen-devel] Doubt regarding virtual memory mapping from hypervisor to a
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Doubt regarding virtual memory mapping from hypervisor to a domain |
| From: | Kaustubh Kabra <kaustubhwise@xxxxxxxxx> |
| Date: | Sat, 29 Jan 2011 00:53:29 +0530 |
| Cc: | vasani.ashwin@xxxxxxxxx, Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, keir@xxxxxxx, Tim.Deegan@xxxxxxxxxx |
| Delivery-date: | Fri, 28 Jan 2011 11:25:02 -0800 |
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Hi, I have allocated few order=9 pages in Xen memory space using alloc_domheap_pages(NULL,9,0) during boot time just before domain is created (dom0 = domain_create(0, DOMCRF_s3_integrity, DOM0_SSIDREF) in xen/arch/x86/setup.c). I got the following virtual addresses in xen log message- (XEN) a2k2: Virt_addr:ffff83011cc00000 MFN:11cc00 (XEN) a2k2: Virt_addr:ffff83011ca00000 MFN:11ca00 (XEN) a2k2: Virt_addr:ffff83011c800000 MFN:11c800 (XEN) a2k2: Virt_addr:ffff83011c600000 MFN:11c600 (XEN) a2k2: Virt_addr:ffff83011c400000 MFN:11c400 (XEN) a2k2: Virt_addr:ffff83011c200000 MFN:11c200 (XEN) a2k2: Virt_addr:ffff83011c000000 MFN:11c000 (XEN) a2k2: Virt_addr:ffff83011be00000 MFN:11be00 As per config.h file Xen memory map,the virtual mapping shows that the memory is allocated in 1:1 direct mapping of all physical memory .Can anyone elaborate regarding this mapping ? Now can I allocate this mapped memory reserved by Xen hypervisor to any domain through any existing or my new hypercall? -- Regards, Kaustubh Kabra Pune Institute Of Computer Technology, University of Pune, India. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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