diff options
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index a46a73ecc5f3..b30aa26a8df2 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -502,7 +502,8 @@ void __init efi_enter_virtual_mode(void) efi_status_t status; unsigned long size; u64 end, systab, addr, npages, end_pfn; - void *p, *va; + void *p, *va, *new_memmap = NULL; + int count = 0; efi.systab = NULL; @@ -569,15 +570,21 @@ void __init efi_enter_virtual_mode(void) systab += md->virt_addr - md->phys_addr; efi.systab = (efi_system_table_t *) (unsigned long) systab; } + new_memmap = krealloc(new_memmap, + (count + 1) * memmap.desc_size, + GFP_KERNEL); + memcpy(new_memmap + (count * memmap.desc_size), md, + memmap.desc_size); + count++; } BUG_ON(!efi.systab); status = phys_efi_set_virtual_address_map( - memmap.desc_size * memmap.nr_map, + memmap.desc_size * count, memmap.desc_size, memmap.desc_version, - memmap.phys_map); + (efi_memory_desc_t *)__pa(new_memmap)); if (status != EFI_SUCCESS) { printk(KERN_ALERT "Unable to switch EFI into virtual mode " @@ -605,6 +612,7 @@ void __init efi_enter_virtual_mode(void) runtime_code_page_mkexec(); early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size); memmap.map = NULL; + kfree(new_memmap); } /* |