Re: [PATCH] kexec: Replace kmap() with kmap_local_page()

[Fabio M. De Francesco]

On giovedì 7 luglio 2022 20:49:39 CEST Fabio M. De Francesco wrote:
> The use of kmap() and kmap_atomic() are being deprecated in favor of
> kmap_local_page().
> 
> With kmap_local_page(), the mappings are per thread, CPU local and not
> globally visible. Furthermore, the mappings can be acquired from any
> context (including interrupts).
> 
> Therefore, use kmap_local_page() in aio.c because these mappings are per
> thread, CPU local, and not globally visible.
> 
> Tested on a QEMU + KVM 32-bits VM booting a kernel with HIGHMEM64GB
> enabled.
> 
> Suggested-by: Ira Weiny <ira.weiny@xxxxxxxxx>
> Signed-off-by: Fabio M. De Francesco <fmdefrancesco@xxxxxxxxx>
> ---
>  kernel/kexec_core.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
Please discard this version because there is a small error in the commit 
message due to bad copy and paste. Version 2 is at 
https://lore.kernel.org/lkml/20220707231550.1484-1-fmdefrancesco@xxxxxxxxx/

Thanks,

Fabio