48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
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Index: xen-unstable/xen/arch/x86/x86_32/mm.c
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===================================================================
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--- xen-unstable.orig/xen/arch/x86/x86_32/mm.c
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+++ xen-unstable/xen/arch/x86/x86_32/mm.c
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@@ -62,6 +62,8 @@ l2_pgentry_t *virt_to_xen_l2e(unsigned l
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return &idle_pg_table_l2[l2_linear_offset(v)];
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}
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+extern unsigned long lowmem_emergency_pool_pages;
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+
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void __init paging_init(void)
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{
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void *ioremap_pt;
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@@ -129,6 +131,20 @@ void __init setup_idle_pagetable(void)
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l2e_from_page(virt_to_page(idle_vcpu[0]->domain->
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arch.mm_perdomain_pt) + i,
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__PAGE_HYPERVISOR);
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+
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+ /*
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+ * Size the lowmem_emergency_pool based on the total memory on the box
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+ * This pool is needed only on 32 bit PAE configurations (4g to 16g).
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+ */
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+ if (lowmem_emergency_pool_pages)
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+ return;
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+
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+ if (total_pages > (4 * 1024 * 1024))
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+ lowmem_emergency_pool_pages = 12000;
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+ else if (total_pages > (2 * 1024 * 1024))
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+ lowmem_emergency_pool_pages = 8000;
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+ else if (total_pages > (1 * 1024 * 1024) || max_page >= (1 * 1024 * 1024))
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+ lowmem_emergency_pool_pages = 4000;
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}
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void __init zap_low_mappings(l2_pgentry_t *base)
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Index: xen-unstable/xen/common/page_alloc.c
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===================================================================
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--- xen-unstable.orig/xen/common/page_alloc.c
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+++ xen-unstable/xen/common/page_alloc.c
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@@ -47,7 +47,7 @@ string_param("badpage", opt_badpage);
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* allocation requests. Ordinary requests will not fall back to the
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* lowmem emergency pool.
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*/
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-static unsigned long lowmem_emergency_pool_pages;
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+unsigned long lowmem_emergency_pool_pages;
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static void parse_lowmem_emergency_pool(char *s)
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{
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unsigned long long bytes;
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