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| author | Khalid Aziz <khalid.aziz@oracle.com> | 2018-02-21 20:15:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-03-18 17:38:45 +0300 |
| commit | d84bb709aa4a6a155b1aaaf449cad21f02be4594 (patch) | |
| tree | 15c882c521fc6b505ba576914ee626f5f09ffa6d /mm/memory.c | |
| parent | 8f5fd927c3a7576d57248a2d7a0861c3f2795973 (diff) | |
| download | linux-d84bb709aa4a6a155b1aaaf449cad21f02be4594.tar.xz | |
signals, sparc: Add signal codes for ADI violations
SPARC M7 processor introduces a new feature - Application Data
Integrity (ADI). ADI allows MMU to catch rogue accesses to memory.
When a rogue access occurs, MMU blocks the access and raises an
exception. In response to the exception, kernel sends the offending
task a SIGSEGV with si_code that indicates the nature of exception.
This patch adds three new signal codes specific to ADI feature:
1. ADI is not enabled for the address and task attempted to access
memory using ADI
2. Task attempted to access memory using wrong ADI tag and caused
a deferred exception.
3. Task attempted to access memory using wrong ADI tag and caused
a precise exception.
Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Khalid Aziz <khalid@gonehiking.org>
Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions