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| author | James Morse <james.morse@arm.com> | 2016-04-27 18:47:06 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-04-28 13:05:46 +0200 |
| commit | adc9b2dfd00924e9e9b98613f36a6cb8c51f0dc6 (patch) | |
| tree | 127168cb8901a501fa01f87491e18566f81f5630 /arch/arm64/kernel/asm-offsets.c | |
| parent | arm64: kvm: allows kvm cpu hotplug (diff) | |
| download | linux-adc9b2dfd00924e9e9b98613f36a6cb8c51f0dc6.tar.xz linux-adc9b2dfd00924e9e9b98613f36a6cb8c51f0dc6.zip | |
arm64: kernel: Rework finisher callback out of __cpu_suspend_enter()
Hibernate could make use of the cpu_suspend() code to save/restore cpu
state, however it needs to be able to return '0' from the 'finisher'.
Rework cpu_suspend() so that the finisher is called from C code,
independently from the save/restore of cpu state. Space to save the context
in is allocated in the caller's stack frame, and passed into
__cpu_suspend_enter().
Hibernate's use of this API will look like a copy of the cpu_suspend()
function.
Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/asm-offsets.c')
| -rw-r--r-- | arch/arm64/kernel/asm-offsets.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 3ae6b310ac9b..0902acb7afe5 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -122,6 +122,8 @@ int main(void) DEFINE(SLEEP_SAVE_SP_SZ, sizeof(struct sleep_save_sp)); DEFINE(SLEEP_SAVE_SP_PHYS, offsetof(struct sleep_save_sp, save_ptr_stash_phys)); DEFINE(SLEEP_SAVE_SP_VIRT, offsetof(struct sleep_save_sp, save_ptr_stash)); + DEFINE(SLEEP_STACK_DATA_SYSTEM_REGS, offsetof(struct sleep_stack_data, system_regs)); + DEFINE(SLEEP_STACK_DATA_CALLEE_REGS, offsetof(struct sleep_stack_data, callee_saved_regs)); #endif DEFINE(ARM_SMCCC_RES_X0_OFFS, offsetof(struct arm_smccc_res, a0)); DEFINE(ARM_SMCCC_RES_X2_OFFS, offsetof(struct arm_smccc_res, a2)); |