Re: [patch] scheduler bugfix, SMP, 2.4.0-test7

From: David S. Miller (
Date: Tue Aug 29 2000 - 16:08:22 EST

   Date: Tue, 29 Aug 2000 16:13:22 +0100 (BST)
   From: Alan Cox <>

> Ingo, the local flags stuff on Sparc, remember?

   Maybe its time to have FASTCALLFLAGS that is different for sparc ?

The problem not FASTCALL, which is a NOP on sparc anyways. The
problem is the fact that people expect the following to work:

void foo(unsigned long flags)

void bar(void)
        unsigned long flags;


And it doesn't on Sparc because the flags are stored in the same CPU
register as the current register window.

Therefore you cannot restore irq flags in a different function than
the one in which you obtained them.

David S. Miller
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