Re: [PATCH] x86/sgx: Replace kmap/kunmap_atomic calls

From: Dave Hansen
Date: Thu Oct 06 2022 - 16:46:02 EST

On 10/6/22 13:37, Fabio M. De Francesco wrote:
> kmap() were not suited in those cases because it might sleep. If the intents
> of the author are simply map a page while in atomic, so to avoid sleeping in
> atomic bugs, your conversions looks good.
> For the reasons above, can you please say something more about why this code
> needed a kmap_atomic() instead of calling kmap()?

This question is backwards. kmap_atomic() is the default that folks
use. You use kmap_atomic() *always* unless you _need_ to sleep or one
of the other kmap()-only things.

Folks don't and shouldn't have to explain why this was using kmap_atomic().