From 0513fe1d28e45deb39159dbeedf0660c3f0effd2 Mon Sep 17 00:00:00 2001 From: Alex Thorlton Date: Fri, 5 Aug 2016 18:59:35 -0500 Subject: [PATCH] x86/efi: Map in physical addresses in efi_map_region_fixed This is a simple change to add in the physical mappings as well as the virtual mappings in efi_map_region_fixed. The motivation here is to get access to EFI runtime code that is only available via the 1:1 mappings on a kexec'd kernel. The added call is essentially the kexec analog of the first __map_region that Boris put in efi_map_region in commit d2f7cbe7b26a ("x86/efi: Runtime services virtual mapping"). Signed-off-by: Alex Thorlton Cc: Russ Anderson Cc: Dimitri Sivanich Cc: Mike Travis Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Dave Young Cc: Borislav Petkov Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi_64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 45434ea345e9..e1ca71259468 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -339,6 +339,7 @@ void __init efi_map_region(efi_memory_desc_t *md) */ void __init efi_map_region_fixed(efi_memory_desc_t *md) { + __map_region(md, md->phys_addr); __map_region(md, md->virt_addr); }