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xen: use early_brk for level2_kernel_pgt

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2010-08-26 16:16:28 -07:00
parent a2e8752987
commit f0991802bb
1 changed files with 3 additions and 1 deletions
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4
arch/x86/xen/mmu.c
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@@ -1843,13 +1843,15 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
return pgd; return pgd;
} }
#else /* !CONFIG_X86_64 */ #else /* !CONFIG_X86_64 */
static pmd_t level2_kernel_pgt[PTRS_PER_PMD] __page_aligned_bss; static RESERVE_BRK_ARRAY(pmd_t, level2_kernel_pgt, PTRS_PER_PMD);
__init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd, __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
unsigned long max_pfn) unsigned long max_pfn)
{ {
pmd_t *kernel_pmd; pmd_t *kernel_pmd;
level2_kernel_pgt = extend_brk(sizeof(pmd_t *) * PTRS_PER_PMD, PAGE_SIZE);
max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) + max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
xen_start_info->nr_pt_frames * PAGE_SIZE + xen_start_info->nr_pt_frames * PAGE_SIZE +
512*1024); 512*1024);