diff options
| 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 /scripts | |
| parent | powerpc: implementation for arch_vma_access_permitted() (diff) | |
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 'scripts')
0 files changed, 0 insertions, 0 deletions