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| author | Ingo Molnar | 2012-01-04 15:00:43 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2012-01-04 15:01:28 +0100 |
| commit | adaf4ed2abbd285c93808060924eeec3af483aee (patch) | |
| tree | 425c6c37c08af0b69efaa7457c9b428eda347c36 /arch/x86/platform/efi | |
| parent | x86_64, asm: Optimise fls(), ffs() and fls64() (diff) | |
| parent | Linux 3.2-rc7 (diff) | |
| download | kernel-qcow2-linux-adaf4ed2abbd285c93808060924eeec3af483aee.tar.gz kernel-qcow2-linux-adaf4ed2abbd285c93808060924eeec3af483aee.tar.xz kernel-qcow2-linux-adaf4ed2abbd285c93808060924eeec3af483aee.zip | |
Merge commit 'v3.2-rc7' into x86/asm
Merge reason: Update from -rc4 to -rc7.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/platform/efi')
| -rw-r--r-- | arch/x86/platform/efi/efi_32.c | 48 |
1 files changed, 2 insertions, 46 deletions
diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index e36bf714cb77..40e446941dd7 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -39,43 +39,14 @@ */ static unsigned long efi_rt_eflags; -static pgd_t efi_bak_pg_dir_pointer[2]; void efi_call_phys_prelog(void) { - unsigned long cr4; - unsigned long temp; struct desc_ptr gdt_descr; local_irq_save(efi_rt_eflags); - /* - * If I don't have PAE, I should just duplicate two entries in page - * directory. If I have PAE, I just need to duplicate one entry in - * page directory. - */ - cr4 = read_cr4_safe(); - - if (cr4 & X86_CR4_PAE) { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - swapper_pg_dir[0].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - } else { - efi_bak_pg_dir_pointer[0].pgd = - swapper_pg_dir[pgd_index(0)].pgd; - efi_bak_pg_dir_pointer[1].pgd = - swapper_pg_dir[pgd_index(0x400000)].pgd; - swapper_pg_dir[pgd_index(0)].pgd = - swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd; - temp = PAGE_OFFSET + 0x400000; - swapper_pg_dir[pgd_index(0x400000)].pgd = - swapper_pg_dir[pgd_index(temp)].pgd; - } - - /* - * After the lock is released, the original page table is restored. - */ + load_cr3(initial_page_table); __flush_tlb_all(); gdt_descr.address = __pa(get_cpu_gdt_table(0)); @@ -85,28 +56,13 @@ void efi_call_phys_prelog(void) void efi_call_phys_epilog(void) { - unsigned long cr4; struct desc_ptr gdt_descr; gdt_descr.address = (unsigned long)get_cpu_gdt_table(0); gdt_descr.size = GDT_SIZE - 1; load_gdt(&gdt_descr); - cr4 = read_cr4_safe(); - - if (cr4 & X86_CR4_PAE) { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - } else { - swapper_pg_dir[pgd_index(0)].pgd = - efi_bak_pg_dir_pointer[0].pgd; - swapper_pg_dir[pgd_index(0x400000)].pgd = - efi_bak_pg_dir_pointer[1].pgd; - } - - /* - * After the lock is released, the original page table is restored. - */ + load_cr3(swapper_pg_dir); __flush_tlb_all(); local_irq_restore(efi_rt_eflags); |