linux-kernel - [PATCH v3 0/2] powerpc/watchpoint/ptrace: Buf fix plus new feature flag

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Date:   Wed,  5 Aug 2020 11:57:48 +0530
From:   Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
To:     mpe@...erman.id.au
Cc:     ravi.bangoria@...ux.ibm.com, mikey@...ling.org, paulus@...ba.org,
        christophe.leroy@....fr, naveen.n.rao@...ux.vnet.ibm.com,
        pedromfc@...ibm.com, rogealve@...ibm.com, jniethe5@...il.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/2] powerpc/watchpoint/ptrace: Buf fix plus new feature flag

Patch #1 fixes a bug when watchpoint is created with ptrace
PPC_PTRACE_SETHWDEBUG and CONFIG_HAVE_HW_BREAKPOINT=N.
patch #2 introduce new feature bit
PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 which will be set when
running on ISA 3.1 compliant machine.

v2: https://lore.kernel.org/r/20200723093330.306341-1-ravi.bangoria@linux.ibm.com

v2->v3:
 - #1: is new
 - #2: Set PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 unconditionally
   while running on p10.
 - Rebased to powerpc/next (cf1ae052e073)

Ravi Bangoria (2):
  powerpc/watchpoint/ptrace: Fix SETHWDEBUG when
    CONFIG_HAVE_HW_BREAKPOINT=N
  powerpc/watchpoint/ptrace: Introduce PPC_DEBUG_FEATURE_DATA_BP_ARCH_31

 Documentation/powerpc/ptrace.rst          | 1 +
 arch/powerpc/include/uapi/asm/ptrace.h    | 1 +
 arch/powerpc/kernel/ptrace/ptrace-noadv.c | 4 +++-
 3 files changed, 5 insertions(+), 1 deletion(-)

-- 
2.26.2