diff options
Diffstat (limited to 'arch/s390/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/s390/kernel/vmlinux.lds.S | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 96a713a470e7..a049ff005f03 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -60,12 +60,7 @@ SECTIONS RO_DATA_SECTION(PAGE_SIZE) -#ifdef CONFIG_SHARED_KERNEL - . = ALIGN(0x100000); /* VM shared segments are 1MB aligned */ -#endif - . = ALIGN(PAGE_SIZE); - _eshared = .; /* End of shareable data */ _sdata = .; /* Start of data section */ . = ALIGN(PAGE_SIZE); @@ -105,6 +100,29 @@ SECTIONS EXIT_DATA } + /* + * struct alt_inst entries. From the header (alternative.h): + * "Alternative instructions for different CPU types or capabilities" + * Think locking instructions on spinlocks. + * Note, that it is a part of __init region. + */ + . = ALIGN(8); + .altinstructions : { + __alt_instructions = .; + *(.altinstructions) + __alt_instructions_end = .; + } + + /* + * And here are the replacement instructions. The linker sticks + * them as binary blobs. The .altinstructions has enough data to + * get the address and the length of them to patch the kernel safely. + * Note, that it is a part of __init region. + */ + .altinstr_replacement : { + *(.altinstr_replacement) + } + /* early.c uses stsi, which requires page aligned data. */ . = ALIGN(PAGE_SIZE); INIT_DATA_SECTION(0x100) |