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xen: add the direct mapping area for ISA bus access

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add the direct mapping area for ISA bus access when running as initial
domain

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Juan Quintela
2010-09-02 15:45:43 +01:00
committed by Stefano Stabellini
parent b37a56d6f3
commit 4ec5387cc3
3 changed files with 28 additions and 0 deletions
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arch/x86/xen/enlighten.c
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@@ -1186,6 +1186,7 @@ asmlinkage void __init xen_start_kernel(void)
xen_raw_console_write("mapping kernel into physical memory\n");
pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);
xen_ident_map_ISA();
init_mm.pgd = pgd;