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sparc64: Add support for ADI register fields, ASIs and traps

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SPARC M7 processor adds new control register fields, ASIs and a new
trap to support the ADI (Application Data Integrity) feature. This
patch adds definitions for these register fields, ASIs and a handler
for the new precise memory corruption detected trap.

Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Cc: Khalid Aziz <khalid@gonehiking.org>
Reviewed-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Khalid Aziz
2018-02-21 10:15:45 -07:00
committed by David S. Miller
parent ca827d55eb
commit 750375003d
10 changed files with 109 additions and 2 deletions
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10
arch/sparc/include/uapi/asm/pstate.h
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@@ -11,7 +11,12 @@
* -----------------------------------------------------------------------
* 63 12 11 10 9 8 7 6 5 4 3 2 1 0
*/
/* IG on V9 conflicts with MCDE on M7. PSTATE_MCDE will only be used on
* processors that support ADI which do not use IG, hence there is no
* functional conflict
*/
#define PSTATE_IG _AC(0x0000000000000800,UL) /* Interrupt Globals. */
#define PSTATE_MCDE _AC(0x0000000000000800,UL) /* MCD Enable */
#define PSTATE_MG _AC(0x0000000000000400,UL) /* MMU Globals. */
#define PSTATE_CLE _AC(0x0000000000000200,UL) /* Current Little Endian.*/
#define PSTATE_TLE _AC(0x0000000000000100,UL) /* Trap Little Endian. */
@@ -48,7 +53,12 @@
#define TSTATE_ASI _AC(0x00000000ff000000,UL) /* AddrSpace ID. */
#define TSTATE_PIL _AC(0x0000000000f00000,UL) /* %pil (Linux traps)*/
#define TSTATE_PSTATE _AC(0x00000000000fff00,UL) /* PSTATE. */
/* IG on V9 conflicts with MCDE on M7. TSTATE_MCDE will only be used on
* processors that support ADI which do not support IG, hence there is
* no functional conflict
*/
#define TSTATE_IG _AC(0x0000000000080000,UL) /* Interrupt Globals.*/
#define TSTATE_MCDE _AC(0x0000000000080000,UL) /* MCD enable. */
#define TSTATE_MG _AC(0x0000000000040000,UL) /* MMU Globals. */
#define TSTATE_CLE _AC(0x0000000000020000,UL) /* CurrLittleEndian. */
#define TSTATE_TLE _AC(0x0000000000010000,UL) /* TrapLittleEndian. */