diff options
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 44 | ||||
| -rw-r--r-- | arch/x86/platform/efi/quirks.c | 2 |
2 files changed, 32 insertions, 14 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 5ccde8b6cdd1..33996987ac70 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -827,6 +827,19 @@ static void __init kexec_enter_virtual_mode(void) get_systab_virt_addr(md); } + /* + * Unregister the early EFI memmap from efi_init() and install + * the new EFI memory map. + */ + efi_memmap_unmap(); + + if (efi_memmap_init_late(efi.memmap.phys_map, + efi.memmap.desc_size * efi.memmap.nr_map)) { + pr_err("Failed to remap late EFI memory map\n"); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); + return; + } + save_runtime_map(); BUG_ON(!efi.systab); @@ -888,6 +901,7 @@ static void __init __efi_enter_virtual_mode(void) int count = 0, pg_shift = 0; void *new_memmap = NULL; efi_status_t status; + phys_addr_t pa; efi.systab = NULL; @@ -905,11 +919,26 @@ static void __init __efi_enter_virtual_mode(void) return; } + pa = __pa(new_memmap); + + /* + * Unregister the early EFI memmap from efi_init() and install + * the new EFI memory map that we are about to pass to the + * firmware via SetVirtualAddressMap(). + */ + efi_memmap_unmap(); + + if (efi_memmap_init_late(pa, efi.memmap.desc_size * count)) { + pr_err("Failed to remap late EFI memory map\n"); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); + return; + } + save_runtime_map(); BUG_ON(!efi.systab); - if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) { + if (efi_setup_page_tables(pa, 1 << pg_shift)) { clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -921,14 +950,14 @@ static void __init __efi_enter_virtual_mode(void) efi.memmap.desc_size * count, efi.memmap.desc_size, efi.memmap.desc_version, - (efi_memory_desc_t *)__pa(new_memmap)); + (efi_memory_desc_t *)pa); } else { status = efi_thunk_set_virtual_address_map( efi_phys.set_virtual_address_map, efi.memmap.desc_size * count, efi.memmap.desc_size, efi.memmap.desc_version, - (efi_memory_desc_t *)__pa(new_memmap)); + (efi_memory_desc_t *)pa); } if (status != EFI_SUCCESS) { @@ -960,15 +989,6 @@ static void __init __efi_enter_virtual_mode(void) efi_runtime_update_mappings(); efi_dump_pagetable(); - /* - * We mapped the descriptor array into the EFI pagetable above - * but we're not unmapping it here because if we're running in - * EFI mixed mode we need all of memory to be accessible when - * we pass parameters to the EFI runtime services in the - * thunking code. - */ - free_pages((unsigned long)new_memmap, pg_shift); - /* clean DUMMY object */ efi_delete_dummy_variable(); } diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c index 47b99108ff8e..9faf18874692 100644 --- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -286,8 +286,6 @@ void __init efi_free_boot_services(void) free_bootmem_late(start, size); } - - efi_memmap_unmap(); } /* |