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SubjectRe: [PATCH v3 22/23] powerpc/vdso: Migrate native signals to generic vdso_base
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Le 11/06/2021 à 20:02, Dmitry Safonov a écrit :
> Generic way to track the land vma area.
> Stat speaks for itself.
>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Paul Mackerras <paulus@samba.org>
> Signed-off-by: Dmitry Safonov <dima@arista.com>


Build failure:

CC arch/powerpc/kernel/asm-offsets.s
In file included from ./include/linux/mmzone.h:21,
from ./include/linux/gfp.h:6,
from ./include/linux/xarray.h:14,
from ./include/linux/radix-tree.h:19,
from ./include/linux/fs.h:15,
from ./include/linux/compat.h:17,
from arch/powerpc/kernel/asm-offsets.c:14:
./include/linux/mm_types.h: In function 'init_vdso_base':
./include/linux/mm_types.h:522:28: error: 'TASK_SIZE_MAX' undeclared (first use in this function);
did you mean 'XATTR_SIZE_MAX'?
522 | #define UNMAPPED_VDSO_BASE TASK_SIZE_MAX
| ^~~~~~~~~~~~~
./include/linux/mm_types.h:627:40: note: in expansion of macro 'UNMAPPED_VDSO_BASE'
627 | mm->vdso_base = (void __user *)UNMAPPED_VDSO_BASE;
| ^~~~~~~~~~~~~~~~~~
./include/linux/mm_types.h:522:28: note: each undeclared identifier is reported only once for each
function it appears in
522 | #define UNMAPPED_VDSO_BASE TASK_SIZE_MAX
| ^~~~~~~~~~~~~
./include/linux/mm_types.h:627:40: note: in expansion of macro 'UNMAPPED_VDSO_BASE'
627 | mm->vdso_base = (void __user *)UNMAPPED_VDSO_BASE;
| ^~~~~~~~~~~~~~~~~~
make[2]: *** [arch/powerpc/kernel/asm-offsets.s] Error 1
make[1]: *** [prepare0] Error 2
make: *** [__sub-make] Error 2

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