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| author | Ram Pai <linuxram@us.ibm.com> | 2018-01-18 17:50:40 -0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-20 22:59:04 +1100 |
| commit | e6c2a4797e101a25eced94aa9e1fc42c30247aec (patch) | |
| tree | 97ab4186d328b99f469a0252f419a2f692524139 /arch/powerpc/mm/hash_utils_64.c | |
| parent | 1137573acfe4c67cdd265bbfbd2d66ebe87d6325 (diff) | |
| download | lwn-e6c2a4797e101a25eced94aa9e1fc42c30247aec.tar.gz lwn-e6c2a4797e101a25eced94aa9e1fc42c30247aec.zip | |
powerpc: Handle exceptions caused by pkey violation
Handle Data and Instruction exceptions caused by memory
protection-key.
The CPU will detect the key fault if the HPTE is already
programmed with the key.
However if the HPTE is not hashed, a key fault will not
be detected by the hardware. The software will detect
pkey violation in such a case.
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/hash_utils_64.c')
0 files changed, 0 insertions, 0 deletions