diff options
Diffstat (limited to 'arch/x86/realmode/rm/trampoline_common.S')
| -rw-r--r-- | arch/x86/realmode/rm/trampoline_common.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/realmode/rm/trampoline_common.S b/arch/x86/realmode/rm/trampoline_common.S new file mode 100644 index 000000000..4331c32c4 --- /dev/null +++ b/arch/x86/realmode/rm/trampoline_common.S @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + .section ".rodata","a" + .balign 16 + +/* + * When a bootloader hands off to the kernel in 32-bit mode an + * IDT with a 2-byte limit and 4-byte base is needed. When a boot + * loader hands off to a kernel 64-bit mode the base address + * extends to 8-bytes. Reserve enough space for either scenario. + */ +SYM_DATA_START_LOCAL(tr_idt) + .short 0 + .quad 0 +SYM_DATA_END(tr_idt) |