Re: [PATCH 1/2] s390: export memory encryption helper functions

[Christian Borntraeger]

Am 26.05.26 um 12:20 schrieb Arnd Bergmann:
> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The set_memory_encrypted/set_memory_decrypted functions are exported
> on x86 and arm64 but not on s390, which leads to a new build failure
> because they are now used in a loadable module:
>
> ERROR: modpost: "set_memory_encrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!
> ERROR: modpost: "set_memory_decrypted" [drivers/dma-buf/heaps/system_heap.ko] undefined!
>
> Export these the same way we do on the other architectures.
>
> Fixes: fd55edff8a0a ("dma-buf: heaps: system: Turn the heap into a module")

This commit id was from an next tree? Seems to be no longer valid.

> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Acked-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>

@Alexander/vasily/Heiko, can you maybe queue that via the s390 fixes tree?> ---
>   arch/s390/mm/init.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
> index f07168a0d3dd..d589c5e4d388 100644
> --- a/arch/s390/mm/init.c
> +++ b/arch/s390/mm/init.c
> @@ -124,6 +124,7 @@ int set_memory_encrypted(unsigned long vaddr, int numpages)
>   	}
>   	return 0;
>   }
> +EXPORT_SYMBOL_GPL(set_memory_encrypted);
>   
>   int set_memory_decrypted(unsigned long vaddr, int numpages)
>   {
> @@ -135,6 +136,7 @@ int set_memory_decrypted(unsigned long vaddr, int numpages)
>   	}
>   	return 0;
>   }
> +EXPORT_SYMBOL_GPL(set_memory_decrypted);
>   
>   /* are we a protected virtualization guest? */
>   bool force_dma_unencrypted(struct device *dev)