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xen: modify page table construction

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Modify the page table construction to allow multiple virtual regions
to be mapped. This is done as preparation for removing the p2m list
from the initial kernel mapping in order to support huge pv domains.

This allows a cleaner approach for mapping the relocator page by
using this capability.

The interface to the assembler level of the relocator has to be changed
in order to be able to process multiple page table areas.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Juergen Gross authored and Daniel Kiper committed 2016-10-27 16:22:06 +02:00
1 parent 5500cefccd
commit b67a95ecad
6 files changed
+358 -233
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include/grub/xen/relocator.h
+4 -2
View File
@@ -23,11 +23,13 @@
#include <grub/err.h>
#include <grub/relocator.h>
#define XEN_MAX_MAPPINGS 3
struct grub_relocator_xen_state
{
grub_addr_t start_info;
grub_addr_t paging_start;
grub_addr_t paging_size;
grub_addr_t paging_start[XEN_MAX_MAPPINGS];
grub_addr_t paging_size[XEN_MAX_MAPPINGS];
grub_addr_t mfn_list;
grub_addr_t stack;
grub_addr_t entry_point;