Re: [v5][PATCH] livepatch/ppc: Enable livepatching on powerpc

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Mar 09, 2016 at 05:10:25PM +0100, Petr Mladek wrote:
> On Tue 2016-03-08 16:34:35, Torsten Duwe wrote:
> > /* compile using "-ffixed-r14"! */
> > register unsigned long pass_TOC asm("r14");
> 
> BTW: Is this reentrant, please? I mean, is it possible to use this
> hack for two functions? Could the functions call each other?

Yes, it is. pass_TOC isn't really a global variable. It only lives
between the caller and the real function's return. With this notation
the task can easily be shifted to any other register.

	Torsten

--
To unsubscribe from this list: send the line "unsubscribe live-patching" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux Kernel]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux SCSI]

  Powered by Linux