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    Subject[patch V2 22/29] x86/irq/32: Make irq stack a character array
    There is no reason to have an u32 array in struct irq_stack. The only
    purpose of the array is to size the struct properly.

    Preparatory change for sharing struct irq_stack with 64-bit.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    ---
    arch/x86/include/asm/processor.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/include/asm/processor.h
    +++ b/arch/x86/include/asm/processor.h
    @@ -422,7 +422,7 @@ DECLARE_PER_CPU_ALIGNED(struct stack_can
    * per-CPU IRQ handling stacks
    */
    struct irq_stack {
    - u32 stack[IRQ_STACK_SIZE / sizeof(u32)];
    + char stack[IRQ_STACK_SIZE];
    } __aligned(IRQ_STACK_SIZE);

    DECLARE_PER_CPU(struct irq_stack *, hardirq_stack);

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