diff options
Diffstat (limited to 'arch/x86/kernel/trampoline.c')
| -rw-r--r-- | arch/x86/kernel/trampoline.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c index 7c2102c2aadf..9a3d44c0df9a 100644 --- a/arch/x86/kernel/trampoline.c +++ b/arch/x86/kernel/trampoline.c @@ -2,6 +2,7 @@ #include <linux/memblock.h> #include <asm/trampoline.h> +#include <asm/pgtable.h> #if defined(CONFIG_X86_64) && defined(CONFIG_ACPI_SLEEP) #define __trampinit @@ -37,3 +38,20 @@ unsigned long __trampinit setup_trampoline(void) memcpy(trampoline_base, trampoline_data, TRAMPOLINE_SIZE); return virt_to_phys(trampoline_base); } + +void __init setup_trampoline_page_table(void) +{ +#ifdef CONFIG_X86_32 + /* Copy kernel address range */ + clone_pgd_range(trampoline_pg_dir + KERNEL_PGD_BOUNDARY, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, + KERNEL_PGD_BOUNDARY)); + + /* Initialize low mappings */ + clone_pgd_range(trampoline_pg_dir, + swapper_pg_dir + KERNEL_PGD_BOUNDARY, + min_t(unsigned long, KERNEL_PGD_PTRS, + KERNEL_PGD_BOUNDARY)); +#endif +} |