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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-13 01:29:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-13 01:29:17 +0100 |
| commit | 3c1f67d60e2b4f4455563928999fd41cc653645d (patch) | |
| tree | 0d58c145a05fb09167f1ab6882b474eccb1f3563 /arch/x86/kernel/efi.c | |
| parent | 03d78913f01e8f6599823f00357ed17b32747d3d (diff) | |
| parent | 9ead64974b05501bbac0d63a47c99fa786d064ba (diff) | |
| download | kernel-crypto-3c1f67d60e2b4f4455563928999fd41cc653645d.tar.gz kernel-crypto-3c1f67d60e2b4f4455563928999fd41cc653645d.tar.xz kernel-crypto-3c1f67d60e2b4f4455563928999fd41cc653645d.zip | |
Merge branch 'linus' into core/locking
Diffstat (limited to 'arch/x86/kernel/efi.c')
| -rw-r--r-- | arch/x86/kernel/efi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c index 1119d247fe1..eb1ef3b67dd 100644 --- a/arch/x86/kernel/efi.c +++ b/arch/x86/kernel/efi.c @@ -467,7 +467,7 @@ void __init efi_enter_virtual_mode(void) efi_memory_desc_t *md; efi_status_t status; unsigned long size; - u64 end, systab, addr, npages; + u64 end, systab, addr, npages, end_pfn; void *p, *va; efi.systab = NULL; @@ -479,7 +479,10 @@ void __init efi_enter_virtual_mode(void) size = md->num_pages << EFI_PAGE_SHIFT; end = md->phys_addr + size; - if (PFN_UP(end) <= max_low_pfn_mapped) + end_pfn = PFN_UP(end); + if (end_pfn <= max_low_pfn_mapped + || (end_pfn > (1UL << (32 - PAGE_SHIFT)) + && end_pfn <= max_pfn_mapped)) va = __va(md->phys_addr); else va = efi_ioremap(md->phys_addr, size); |