From fa725cc53d353110f39a9e5b9f60d6acb2c7ff49 Mon Sep 17 00:00:00 2001 From: Ravi Bangoria Date: Wed, 2 Sep 2020 09:59:44 +0530 Subject: powerpc/watchpoint/ptrace: Introduce PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 can be used to determine whether we are running on an ISA 3.1 compliant machine. Which is needed to determine DAR behaviour, 512 byte boundary limit etc. This was requested by Pedro Miraglia Franco de Carvalho for extending watchpoint features in gdb. Note that availability of 2nd DAWR is independent of this flag and should be checked using ppc_debug_info->num_data_bps. Signed-off-by: Ravi Bangoria Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200902042945.129369-8-ravi.bangoria@linux.ibm.com --- Documentation/powerpc/ptrace.rst | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation/powerpc') diff --git a/Documentation/powerpc/ptrace.rst b/Documentation/powerpc/ptrace.rst index 864d4b6dddd1..77725d69eb4a 100644 --- a/Documentation/powerpc/ptrace.rst +++ b/Documentation/powerpc/ptrace.rst @@ -46,6 +46,7 @@ features will have bits indicating whether there is support for:: #define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x4 #define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x8 #define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x10 + #define PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 0x20 2. PTRACE_SETHWDEBUG -- cgit v1.2.3