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Jungseok Lee authored
There is need for figuring out how to manage struct thread_info data when IRQ stack is introduced. struct thread_info information should be copied to IRQ stack under the current thread_info calculation logic whenever context switching is invoked. This is too expensive to keep supporting the approach. Instead, this patch pays attention to sp_el0 which is an unused scratch register in EL1 context. sp_el0 utilization not only simplifies the management, but also prevents text section size from being increased largely due to static allocated IRQ stack as removing masking operation using THREAD_SIZE in many places. Reviewed-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
Jungseok Lee <jungseoklee85@gmail.com> Signed-off-by:
James Morse <james.morse@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com>
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