I have a work-in-progress patch that fixes a booting issue on one of my
testboxes. Could you please give it a try, passing dom0_mem=700M to the
Xen command line?
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 947f42a..ebc0221 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -291,10 +291,23 @@ unsigned long __init_refok init_memory_mapping(unsigned
long start,
* located on different 2M pages. cleanup_highmap(), however,
* can only consider _end when it runs, so destroy any
* mappings beyond _brk_end here.
+ * Be careful not to go over _end.
*/
pud = pud_offset(pgd_offset_k(_brk_end), _brk_end);
pmd = pmd_offset(pud, _brk_end - 1);
- while (++pmd <= pmd_offset(pud, (unsigned long)_end - 1))
+ while (++pmd < pmd_offset(pud, (unsigned long)_end - 1))
+ pmd_clear(pmd);
+ if (((unsigned long)_end) & ~PMD_MASK) {
+ pte_t *pte;
+ unsigned long addr;
+ for (addr = ((unsigned long)_end) & PMD_MASK;
+ addr < ((unsigned long)_end);
+ addr += PAGE_SIZE) {
+ pte = pte_offset_map(pmd, addr);
+ pte_clear(&init_mm, addr, pte);
+ pte_unmap(pte);
+ }
+ } else
pmd_clear(pmd);
}
#endif
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