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| author |   Khalid Aziz <khalid.aziz@oracle.com> | 2018-02-21 10:15:43 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-03-18 07:38:45 -0700 |
| commit | d84bb709aa4a6a155b1aaaf449cad21f02be4594 (patch) | |
| tree | 15c882c521fc6b505ba576914ee626f5f09ffa6d /include/uapi/asm-generic | |
| parent | Merge tag 'for-4.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux (diff) | |
| download | linux-dev-d84bb709aa4a6a155b1aaaf449cad21f02be4594.tar.xz linux-dev-d84bb709aa4a6a155b1aaaf449cad21f02be4594.zip | |
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 'include/uapi/asm-generic')
| -rw-r--r-- | include/uapi/asm-generic/siginfo.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index 99c902e460c2..a01fd0a92b1b 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -246,7 +246,10 @@ typedef struct siginfo { #else # define SEGV_PKUERR 4 /* failed protection key checks */ #endif -#define NSIGSEGV 4 +#define SEGV_ACCADI 5 /* ADI not enabled for mapped object */ +#define SEGV_ADIDERR 6 /* Disrupting MCD error */ +#define SEGV_ADIPERR 7 /* Precise MCD exception */ +#define NSIGSEGV 7 /* * SIGBUS si_codes |