386/smp issue with atomic_add_return()

Hi
	Is there any smp box with 386 cpu?
	If it exist, then I think atomic_add_return has a problem.
	Just disabling local interrupts can not keep another cpu from entering this function.
	What do you think about this?

	This is the code (copied from 2.6.16.4):

	#ifdef CONFIG_M386
 no_xadd: /* Legacy 386 processor */
        local_irq_disable();
        __i = atomic_read(v);
        atomic_set(v, i + __i);
        local_irq_enable();
        return i + __i;
	#endif
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: 386/smp issue with atomic_add_return()
    • From: "Joshua Hudson" <[email protected]>

• Prev by Date: [PATCH] sparsemem interaction with memory add bug fixes
• Next by Date: Re: GPL issues
• Previous by thread: [PATCH] sparsemem interaction with memory add bug fixes
• Next by thread: Re: 386/smp issue with atomic_add_return()
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]