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7f9140626c
Please first read the description in "xen/p2m: Add logic to revector a P2M tree to use __va leafs" patch. The 'xen_revector_p2m_tree()' function allocates a new P2M tree copies the contents of the old one in it, and returns the new one. At this stage, the __ka address space (which is what the old P2M tree was using) is partially disassembled. The cleanup_highmap has removed the PMD entries from 0-16MB and anything past _brk_end up to the max_pfn_mapped (which is the end of the ramdisk). We have revectored the P2M tree (and the one for save/restore as well) to use new shiny __va address to new MFNs. The xen_start_info has been taken care of already in 'xen_setup_kernel_pagetable()' and xen_start_info->shared_info in 'xen_setup_shared_info()', so we are free to roam and delete PMD entries - which is exactly what we are going to do. We rip out the __ka for the old P2M array. [v1: Fix smatch warnings] [v2: memset was doing 0 instead of 0xff] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> |
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| boot | ||
| configs | ||
| crypto | ||
| ia32 | ||
| include/asm | ||
| kernel | ||
| kvm | ||
| lguest | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| pci | ||
| platform | ||
| power | ||
| realmode | ||
| syscalls | ||
| tools | ||
| um | ||
| vdso | ||
| video | ||
| xen | ||
| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||
| Makefile.um | ||