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SubjectRe: [PATCH v11 3/3] mm, x86: display pkey in smaps only if arch supports pkeys
Hi Ram,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.15 next-20180201]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Ram-Pai/mm-x86-powerpc-Enhancements-to-Memory-Protection-Keys/20180202-120004
config: x86_64-randconfig-x005-201804 (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All error/warnings (new ones prefixed by >>):

In file included from arch/x86/include/asm/mmu_context.h:8:0,
from arch/x86/events/core.c:36:
>> include/linux/pkeys.h:16:23: error: expected identifier or '(' before numeric constant
#define vma_pkey(vma) 0
^
>> arch/x86/include/asm/mmu_context.h:298:19: note: in expansion of macro 'vma_pkey'
static inline int vma_pkey(struct vm_area_struct *vma)
^~~~~~~~

vim +16 include/linux/pkeys.h

7
8 #ifdef CONFIG_ARCH_HAS_PKEYS
9 #include <asm/pkeys.h>
10 #else /* ! CONFIG_ARCH_HAS_PKEYS */
11 #define arch_max_pkey() (1)
12 #define execute_only_pkey(mm) (0)
13 #define arch_override_mprotect_pkey(vma, prot, pkey) (0)
14 #define PKEY_DEDICATED_EXECUTE_ONLY 0
15 #define ARCH_VM_PKEY_FLAGS 0
> 16 #define vma_pkey(vma) 0
17

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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