linux-kernel - [PATCH v5 00/10] powerpc/watchpoint: Enable 2nd DAWR on baremetal and powervm

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Date:   Thu, 23 Jul 2020 14:38:03 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To:     mpe@...erman.id.au, mikey@...ling.org
Cc:     ravi.bangoria@...ux.ibm.com, paulus@...ba.org, npiggin@...il.com,
        christophe.leroy@....fr, naveen.n.rao@...ux.vnet.ibm.com,
        peterz@...radead.org, jolsa@...nel.org, oleg@...hat.com,
        fweisbec@...il.com, mingo@...nel.org, pedromfc@...ibm.com,
        miltonm@...ibm.com, jniethe5@...il.com, rogealve@...ibm.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH v5 00/10] powerpc/watchpoint: Enable 2nd DAWR on baremetal and powervm

Last series[1] was to add basic infrastructure support for more than
one watchpoint on Book3S powerpc. This series actually enables the 2nd 
DAWR for baremetal and powervm. Kvm guest is still not supported.

v4: https://lore.kernel.org/r/20200717040958.70561-1-ravi.bangoria@linux.ibm.com

v4->v5:
 - Using hardcoded values instead of macros HBP_NUM_ONE and HBP_NUM_TWO.
   Comment above HBP_NUM_MAX changed to explain it's value.
 - Included CPU_FTR_DAWR1 into CPU_FTRS_POWER10
 - Using generic function feat_enable() instead of
   feat_enable_debug_facilities_v31() to enable CPU_FTR_DAWR1.
 - ISA still includes 512B boundary in match criteria. But that's a
   documentation mistake. Mentioned about this in the last patch.
 - Rebased to powerpc/next
 - Added Jordan's Reviewed-by/Tested-by tags

[1]: https://lore.kernel.org/linuxppc-dev/20200514111741.97993-1-ravi.bangoria@linux.ibm.com/

Ravi Bangoria (10):
  powerpc/watchpoint: Fix 512 byte boundary limit
  powerpc/watchpoint: Fix DAWR exception constraint
  powerpc/watchpoint: Fix DAWR exception for CACHEOP
  powerpc/watchpoint: Enable watchpoint functionality on power10 guest
  powerpc/dt_cpu_ftrs: Add feature for 2nd DAWR
  powerpc/watchpoint: Set CPU_FTR_DAWR1 based on pa-features bit
  powerpc/watchpoint: Rename current H_SET_MODE DAWR macro
  powerpc/watchpoint: Guest support for 2nd DAWR hcall
  powerpc/watchpoint: Return available watchpoints dynamically
  powerpc/watchpoint: Remove 512 byte boundary

 arch/powerpc/include/asm/cputable.h       |  8 +-
 arch/powerpc/include/asm/hvcall.h         |  3 +-
 arch/powerpc/include/asm/hw_breakpoint.h  |  4 +-
 arch/powerpc/include/asm/machdep.h        |  2 +-
 arch/powerpc/include/asm/plpar_wrappers.h |  7 +-
 arch/powerpc/kernel/dawr.c                |  2 +-
 arch/powerpc/kernel/dt_cpu_ftrs.c         |  1 +
 arch/powerpc/kernel/hw_breakpoint.c       | 98 +++++++++++++++--------
 arch/powerpc/kernel/prom.c                |  2 +
 arch/powerpc/kvm/book3s_hv.c              |  2 +-
 arch/powerpc/platforms/pseries/setup.c    |  7 +-
 11 files changed, 91 insertions(+), 45 deletions(-)

-- 
2.26.2