Commit 25897374 authored Jul 27, 2010 by Christoph Hellwig Committed by H. Peter Anvin Jul 27, 2010

x86-32: Align IRQ stacks properly



As suggested by Steven Rostedt we need to align the IRQ stacks to the
stack size, not just the page size to make them work for stack traces
and other things that depend on finding the stack slot itself with 8k
stacks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
LKML-Reference: <20100727121313.GA19976@lst.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent dcfa7262

arch/x86/kernel/irq_32.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -55,7 +55,7 @@ static inline void print_stack_overflow(void) { }
		union irq_ctx {
		struct thread_info tinfo;
		u32 stack[THREAD_SIZE/sizeof(u32)];
		} __attribute__((aligned(PAGE_SIZE)));
		} __attribute__((aligned(THREAD_SIZE)));

		static DEFINE_PER_CPU(union irq_ctx *, hardirq_ctx);
		static DEFINE_PER_CPU(union irq_ctx *, softirq_ctx);