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arm64: kernel: Convert to modern annotations for assembly data

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In an effort to clarify and simplify the annotation of assembly functions
in the kernel new macros have been introduced. These include specific
annotations for the start and end of data, update symbols for data to use
these.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2020-02-18 19:58:35 +00:00 committed by Catalin Marinas
parent ebdf44a189
commit a5d4420b26
2 changed files with 10 additions and 6 deletions
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7
arch/arm64/kernel/entry.S
View File

@ -859,9 +859,9 @@ SYM_CODE_END(tramp_exit_compat)
#ifdef CONFIG_RANDOMIZE_BASE
.pushsection ".rodata", "a"
.align PAGE_SHIFT
.globl __entry_tramp_data_start
__entry_tramp_data_start:
SYM_DATA_START(__entry_tramp_data_start)
.quad vectors
SYM_DATA_END(__entry_tramp_data_start)
.popsection // .rodata
#endif /* CONFIG_RANDOMIZE_BASE */
#endif /* CONFIG_UNMAP_KERNEL_AT_EL0 */
@ -983,8 +983,9 @@ NOKPROBE(__sdei_asm_exit_trampoline)
.popsection // .entry.tramp.text
#ifdef CONFIG_RANDOMIZE_BASE
.pushsection ".rodata", "a"
__sdei_asm_trampoline_next_handler:
SYM_DATA_START(__sdei_asm_trampoline_next_handler)
.quad __sdei_asm_handler
SYM_DATA_END(__sdei_asm_trampoline_next_handler)
.popsection // .rodata
#endif /* CONFIG_RANDOMIZE_BASE */
#endif /* CONFIG_UNMAP_KERNEL_AT_EL0 */

9
arch/arm64/kernel/head.S
View File

@ -464,8 +464,9 @@ SYM_FUNC_END(__primary_switched)
*/
.section ".idmap.text","awx"
ENTRY(kimage_vaddr)
SYM_DATA_START(kimage_vaddr)
.quad _text - TEXT_OFFSET
SYM_DATA_END(kimage_vaddr)
EXPORT_SYMBOL(kimage_vaddr)
/*
@ -667,15 +668,17 @@ SYM_FUNC_END(set_cpu_boot_mode_flag)
* This is not in .bss, because we set it sufficiently early that the boot-time
* zeroing of .bss would clobber it.
*/
ENTRY(__boot_cpu_mode)
SYM_DATA_START(__boot_cpu_mode)
.long BOOT_CPU_MODE_EL2
.long BOOT_CPU_MODE_EL1
SYM_DATA_END(__boot_cpu_mode)
/*
* The booting CPU updates the failed status @__early_cpu_boot_status,
* with MMU turned off.
*/
ENTRY(__early_cpu_boot_status)
SYM_DATA_START(__early_cpu_boot_status)
.quad 0
SYM_DATA_END(__early_cpu_boot_status)
.popsection