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UEFI: Don't pass boot services regions to SetVirtualAddressMap()

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We need to map boot services regions during startup in order to avoid
firmware bugs, but we shouldn't be passing those regions to
SetVirtualAddressMap(). Ensure that we're only passing regions that are
marked as being mapped at runtime.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matthew Garrett 2013-06-02 18:12:25 -04:00 committed by Matt Fleming
parent f722406faa
commit 1acba98f81
1 changed files with 7 additions and 0 deletions
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7
arch/x86/platform/efi/efi.c
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@ -1026,6 +1026,13 @@ void __init efi_enter_virtual_mode(void)
va = efi_ioremap(md->phys_addr, size,
md->type, md->attribute);
if (!(md->attribute & EFI_MEMORY_RUNTIME)) {
if (!va)
pr_err("ioremap of 0x%llX failed!\n",
(unsigned long long)md->phys_addr);
continue;
}
md->virt_addr = (u64) (unsigned long) va;
if (!va) {