Kirill A. Shutemov 45b13b424f x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting ... RDMSR in the trampoline code overwrites EDX but that register is used to indicate whether 5-level paging has to be enabled and if clobbered, leads to failure to boot on a 5-level paging machine. Preserve EDX on the stack while we are dealing with EFER. Fixes: b677dfae5a ("x86/boot/compressed/64: Set EFER.LME=1 in 32-bit trampoline before returning to long mode") Reported-by: Kyle D Pelton <kyle.d.pelton@intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: dave.hansen@linux.intel.com Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Huang <wei@redhat.com> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190206115253.1907-1-kirill.shutemov@linux.intel.com		2019-02-06 18:56:18 +01:00
..
.gitignore
cmdline.c
cpuflags.c
early_serial_console.c
eboot.c
eboot.h
efi_stub_32.S
efi_stub_64.S
efi_thunk_64.S
error.c
error.h
head_32.S
head_64.S	x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting	2019-02-06 18:56:18 +01:00
kaslr.c
kaslr_64.c
Makefile
mem_encrypt.S
misc.c
misc.h
mkpiggy.c
pgtable.h	x86/boot/compressed/64: Set EFER.LME=1 in 32-bit trampoline before returning to long mode	2019-01-29 21:58:59 +01:00
pgtable_64.c
string.c
vmlinux.lds.S