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1871853f7a
The save_regs function that saves the regs on low level irq entry is complicated because of the fact it changes its stack in the middle and also because it manipulates data allocated in the caller frame and accesses there are directly calculated from callee rsp value with the return address in the middle of the way. This complicates the static stack offsets calculation and require more dynamic ones. It also needs a save/restore of the function's return address. To simplify and optimize this, turn save_regs() into a macro. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jan Beulich <JBeulich@novell.com> |
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