@@ -482,8 +482,6 @@ ENDPROC(__create_page_tables)
.type __switch_data, %object
__switch_data:
.quad __mmap_switched
- .quad __data_loc // x4
- .quad _data // x5
.quad __bss_start // x6
.quad _end // x7
.quad processor_id // x4
@@ -498,15 +496,7 @@ __switch_data:
__mmap_switched:
adr x3, __switch_data + 8
- ldp x4, x5, [x3], #16
ldp x6, x7, [x3], #16
- cmp x4, x5 // Copy data segment if needed
-1: ccmp x5, x6, #4, ne
- b.eq 2f
- ldr x16, [x4], #8
- str x16, [x5], #8
- b 1b
-2:
1: cmp x6, x7
b.hs 2f
str xzr, [x6], #8 // Clear BSS
@@ -99,11 +99,9 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
_data = .;
- __data_loc = _data - LOAD_OFFSET;
_sdata = .;
RW_DATA_SECTION(64, PAGE_SIZE, THREAD_SIZE)
_edata = .;
- _edata_loc = __data_loc + SIZEOF(.data);
BSS_SECTION(0, 0, 0)
_end = .;
The __data_loc variable is an unused left over from the 32 bit arm implementation. Remove that variable and adjust the __mmap_switched startup routine accordingly. Signed-off-by: Geoff Levand <geoff@infradead.org> for Huawei, Linaro --- v2: Change from fixing up the linker script to removing the __data_loc variable altogether. Catalin, As discussed, I removed all reference to __data_loc and _edata_loc, and also the use of _data in the __mmap_switched routine, as is was just used in a compare. I guess the data segment copy I removed is to support XIP. This change seems to work OK for me in a casual boot test. Please consider. -Geoff arch/arm64/kernel/head.S | 10 ---------- arch/arm64/kernel/vmlinux.lds.S | 2 -- 2 files changed, 12 deletions(-)