[PATCH] powerpc/pseries: Whitelist dtl slub object for copying to userspace

Anjali K anjalik at linux.ibm.com
Fri Jun 21 18:12:42 AEST 2024


Hi Michael

On 18/06/24 12:41, Michael Ellerman wrote:
> I guess there isn't a kmem_cache_create_user_readonly() ?
Thank you for your review.                                                    
My understanding of the question is whether there's a way to whitelist a   
region such that it can be copied to userspace, but not written to using   
copy_from_user().                                                             
No, we don't have a function to whitelist only for copy_to_user() and not  
copy_from_user().

Thank you
Anjali K





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