Re: [PATCH] [RFC] x86: avoid -mtune=atom for objtool warnings

[Arnd Bergmann]

On Wed, Mar 1, 2017 at 3:40 PM, Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote:
> On Wed, Mar 01, 2017 at 10:45:03AM +0100, Arnd Bergmann wrote:

>> Actually, something must have changed in gcc since last month, I also
>> just got a report in another file:
>>
>> drivers/i2c/busses/i2c-img-scb.o: warning: objtool: img_i2c_probe()
>> falls through to next function img_i2c_read_fifo()
>
> This one looks like it could be related to some recent objtool changes
> which affect how it interprets 'ud2'.  Which commit were you testing
> with?  Can you provide the .config file, and the object file if it's not
> too big?

This is with my randconfig test series on top of latest linux-next.
I see it with the latest gcc-7.0.1 snapshot as well as an earlier gcc-7.0.0
build (20161201), but not with gcc-6.3.1

     Arnd

Attachment: i2c-img-scb.o
Description: application/object

Attachment: 0xE4B9EB4B_defconfig.gz
Description: GNU Zip compressed data