# Re: \[PATCH v19 12/25\] mm: Introduce VM\_SHSTK for shadow stack memory

- From: Yu, Yu-cheng \<hidden\>
- Date: 2021-02-04 21:50:28 
- List: linux-doc
- Page: https://ratatoskr.run/linux-doc/2021/02/6259237
- Thread: https://ratatoskr.run/linux-doc/2021/02/6257763/t.md

```text
On 2/4/2021 12:46 PM, Cyrill Gorcunov wrote:
> On Wed, Feb 03, 2021 at 02:55:34PM -0800, Yu-cheng Yu wrote:
>>   
>> diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
>> index 602e3a52884d..59623dcd92bb 100644
>> --- a/fs/proc/task_mmu.c
>> +++ b/fs/proc/task_mmu.c
>> @@ -661,6 +661,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma)
>>   		[ilog2(VM_PKEY_BIT4)]	= "",
>>   #endif
>>   #endif /* CONFIG_ARCH_HAS_PKEYS */
>> +#ifdef CONFIG_X86_CET
>> +		[ilog2(VM_SHSTK)]	= "ss",
>> +#endif
>>   	};
>
> IIRC we've these abbreviations explained in documentaion
> (proc.rst file). Could you please update it once time
> permit? I think it can be done on top of the series.
>

I will add that.  Thanks!
```