Commit 1acba98f authored Jun 02, 2013 by Matthew Garrett Committed by Matt Fleming Jun 06, 2013

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



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>

parent f722406f

arch/x86/platform/efi/efi.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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) {