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 <athorl...@sgi.com> Cc: Russ Anderson <r...@sgi.com> Cc: Dimitri Sivanich <sivan...@sgi.com> Cc: Mike Travis <tra...@sgi.com> Cc: Matt Fleming <m...@codeblueprint.co.uk> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@redhat.com> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: x...@kernel.org Cc: linux-...@vger.kernel.org --- 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 459bcbb..b206126 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -363,6 +363,7 @@ 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); } -- 1.8.5.6