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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-08-27 01:23:51 +0200 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-10-22 21:57:20 +0200 |
| commit | 764f0138b9f54aa96761810055a74fce1e58c300 (patch) | |
| tree | 18593be4d0f7ebbf1a8cf863251b0ef1f8d3d4d6 /arch | |
| parent | xen: use early_brk for level2_kernel_pgt (diff) | |
| download | linux-764f0138b9f54aa96761810055a74fce1e58c300.tar.xz linux-764f0138b9f54aa96761810055a74fce1e58c300.zip | |
xen: allocate level1_ident_pgt
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/mmu.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 71c6af6c89a5..3de42d1e475b 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -138,7 +138,8 @@ static inline void check_zero(void) * large enough to allocate page table pages to allocate the rest. * Each page can map 2MB. */ -static pte_t level1_ident_pgt[PTRS_PER_PTE * 4] __page_aligned_bss; +#define LEVEL1_IDENT_ENTRIES (PTRS_PER_PTE * 4) +static RESERVE_BRK_ARRAY(pte_t, level1_ident_pgt, LEVEL1_IDENT_ENTRIES); #ifdef CONFIG_X86_64 /* l3 pud for userspace vsyscall mapping */ @@ -1718,6 +1719,9 @@ static __init void xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) unsigned ident_pte; unsigned long pfn; + level1_ident_pgt = extend_brk(sizeof(pte_t) * LEVEL1_IDENT_ENTRIES, + PAGE_SIZE); + ident_pte = 0; pfn = 0; for (pmdidx = 0; pmdidx < PTRS_PER_PMD && pfn < max_pfn; pmdidx++) { @@ -1728,7 +1732,7 @@ static __init void xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) pte_page = m2v(pmd[pmdidx].pmd); else { /* Check for free pte pages */ - if (ident_pte == ARRAY_SIZE(level1_ident_pgt)) + if (ident_pte == LEVEL1_IDENT_ENTRIES) break; pte_page = &level1_ident_pgt[ident_pte]; |