Re: [PATCH 4/9] vdso: Introduce vdso/page.h

Vincenzo Frascino
2024-09-06T11:35:29Z

Hi Christophe,

On 04/09/2024 18:16, Christophe Leroy wrote:
>
>
> Le 03/09/2024 à 17:14, Vincenzo Frascino a écrit :
>> The VDSO implementation includes headers from outside of the
>> vdso/ namespace.
>>
>> Introduce vdso/page.h to make sure that the generic library
>> uses only the allowed namespace.
>>
>> Cc: Andy Lutomirski <luto@kernel.org>
>> Cc: Thomas Gleixner <tglx@linutronix.de>
>> Cc: Jason A. Donenfeld <Jason@zx2c4.com>
>> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
>> ---
>>   include/vdso/page.h | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>   create mode 100644 include/vdso/page.h
>>
>> diff --git a/include/vdso/page.h b/include/vdso/page.h
>> new file mode 100644
>> index 000000000000..f18e304941cb
>> --- /dev/null
>> +++ b/include/vdso/page.h
>> @@ -0,0 +1,7 @@
>> +/* SPDX-License-Identifier: GPL-2.0 */
>> +#ifndef __VDSO_PAGE_H
>> +#define __VDSO_PAGE_H
>> +
>> +#include <asm/vdso/page.h>
>
> I can't see the benefit of that, the generic library can directly include
> asm/vdso/page.h
>

I think you agree that any discussion we can have on this point will be made
obsolete by the fact that we will end up defining PAGE_SIZE/PAGE_MASK in
vdso/page.h.

>> +
>> +#endif    /* __VDSO_PAGE_H */

--
Regards,
Vincenzo