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| author | Ram Pai <linuxram@us.ibm.com> | 2020-06-04 16:52:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-04 19:06:27 -0700 |
| commit | 94c8a223ded59918536387a9c33fee29ca54fc7e (patch) | |
| tree | c4296d7b938df36594ae2b503c8e0cfdf8f8c056 /tools/testing/selftests/vm/pkey-powerpc.h | |
| parent | b0acc5d6bf333583b535f5caf1539d90c78519c2 (diff) | |
| download | linux-stable-94c8a223ded59918536387a9c33fee29ca54fc7e.tar.gz linux-stable-94c8a223ded59918536387a9c33fee29ca54fc7e.tar.bz2 linux-stable-94c8a223ded59918536387a9c33fee29ca54fc7e.zip | |
selftests/vm/pkeys: improve checks to determine pkey support
For the pkeys subsystem to work, both the CPU and the kernel need to have
support. So, additionally check if the kernel supports pkeys apart from
the CPU feature checks.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Link: http://lkml.kernel.org/r/8fb76c63ebdadcf068ecd2d23731032e195cd364.1585646528.git.sandipan@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/vm/pkey-powerpc.h')
| -rw-r--r-- | tools/testing/selftests/vm/pkey-powerpc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/vm/pkey-powerpc.h b/tools/testing/selftests/vm/pkey-powerpc.h index 7ad283d4524e..1f82caa6293b 100644 --- a/tools/testing/selftests/vm/pkey-powerpc.h +++ b/tools/testing/selftests/vm/pkey-powerpc.h @@ -64,8 +64,9 @@ static inline void __write_pkey_reg(u64 pkey_reg) __func__, __read_pkey_reg(), pkey_reg); } -static inline int cpu_has_pku(void) +static inline int cpu_has_pkeys(void) { + /* No simple way to determine this */ return 1; } |