# Re: \[PATCH v5\] powerpc/64s: support nospectre\_v2 cmdline option

- From: Andrew Donnellan \<hidden\>
- Date: 2019-07-09 08:10:57 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2019/07/9510922
- Thread: https://ratatoskr.run/linuxppc-dev/2019/05/9510059/t.md

```text
On 5/6/19 5:42 pm, Andrew Donnellan wrote:
> On 24/5/19 12:46 pm, Christopher M. Riedl wrote:
>> Add support for disabling the kernel implemented spectre v2 mitigation
>> (count cache flush on context switch) via the nospectre_v2 and
>> mitigations=off cmdline options.
>>
>> Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
>> Signed-off-by: Christopher M. Riedl <redacted>
>> Reviewed-by: Andrew Donnellan <redacted>
>
> snowpatch is whinging about this breaking the build for some reason... https://patchwork.ozlabs.org/patch/1104583/

Upon further inspection, it appears this was bogus, and now snowpatch is passing it happily.

-- 
Andrew Donnellan              OzLabs, ADL Canberra
ajd@linux.ibm.com             IBM Australia Limited

```