linux-kernel - Re: arch/ia64/kernel/entry.S:621: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191)

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Date:	Wed, 9 Mar 2016 16:03:26 +0000
From:	Will Deacon <will.deacon@....com>
To:	kbuild test robot <fengguang.wu@...el.com>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: arch/ia64/kernel/entry.S:621: Error: Operand 2 of `adds' should
 be a 14-bit integer (-8192-8191)

On Sun, Mar 06, 2016 at 09:47:10PM +0800, kbuild test robot wrote:
> FYI, the error/warning still remains.

[...]

>    arch/ia64/kernel/entry.S: Assembler messages:
> >> arch/ia64/kernel/entry.S:621: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191)
>    arch/ia64/kernel/entry.S:728: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191)
>    arch/ia64/kernel/entry.S:859: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191)
> --
>    arch/ia64/kernel/fsys.S: Assembler messages:
> >> arch/ia64/kernel/fsys.S:67: Error: Operand 3 of `add' should be a general register r0-r3
>    arch/ia64/kernel/fsys.S:97: Error: Operand 3 of `add' should be a general register r0-r3
>    arch/ia64/kernel/fsys.S:193: Error: Operand 3 of `add' should be a general register r0-r3
>    arch/ia64/kernel/fsys.S:336: Error: Operand 3 of `add' should be a general register r0-r3
>    arch/ia64/kernel/fsys.S:338: Error: Operand 3 of `add' should be a general register r0-r3
> --
>    arch/ia64/kernel/ivt.S: Assembler messages:
> >> arch/ia64/kernel/ivt.S:759: Error: Operand 3 of `add' should be a general register r0-r3

Yeah :( I reported this on linux-arch a while back:

http://lkml.kernel.org/r/20160127150031.GI2390@arm.com

but didn't get any replies (I cc'd the maintainers).

Tell you what; I'll repost the fix I had there (basically disabling
LATENCYTOP for ia64) as a separate patch and see how it goes.

Will