diff options
Diffstat (limited to 'lib/Kconfig.kgdb')
| -rw-r--r-- | lib/Kconfig.kgdb | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/lib/Kconfig.kgdb b/lib/Kconfig.kgdb index bbe397df04a3..3b9a44008433 100644 --- a/lib/Kconfig.kgdb +++ b/lib/Kconfig.kgdb @@ -3,6 +3,11 @@ config HAVE_ARCH_KGDB bool +# set if architecture has the its kgdb_arch_handle_qxfer_pkt +# function to enable gdb stub to address XML packet sent from GDB. +config HAVE_ARCH_KGDB_QXFER_PKT + bool + menuconfig KGDB bool "KGDB: kernel debugger" depends on HAVE_ARCH_KGDB @@ -19,6 +24,21 @@ menuconfig KGDB if KGDB +config KGDB_HONOUR_BLOCKLIST + bool "KGDB: use kprobe blocklist to prohibit unsafe breakpoints" + depends on HAVE_KPROBES + depends on MODULES + select KPROBES + default y + help + If set to Y the debug core will use the kprobe blocklist to + identify symbols where it is unsafe to set breakpoints. + In particular this disallows instrumentation of functions + called during debug trap handling and thus makes it very + difficult to inadvertently provoke recursive trap handling. + + If unsure, say Y. + config KGDB_SERIAL_CONSOLE tristate "KGDB: use kgdb over the serial console" select CONSOLE_POLL @@ -64,9 +84,9 @@ config KGDB_LOW_LEVEL_TRAP depends on X86 || MIPS default n help - This will add an extra call back to kgdb for the breakpoint - exception handler which will allow kgdb to step through a - notify handler. + This will add an extra call back to kgdb for the breakpoint + exception handler which will allow kgdb to step through a + notify handler. config KGDB_KDB bool "KGDB_KDB: include kdb frontend for kgdb" @@ -96,12 +116,12 @@ config KDB_DEFAULT_ENABLE The config option merely sets the default at boot time. Both issuing 'echo X > /sys/module/kdb/parameters/cmd_enable' or - setting with kdb.cmd_enable=X kernel command line option will + setting with kdb.cmd_enable=X kernel command line option will override the default settings. config KDB_KEYBOARD bool "KGDB_KDB: keyboard as input device" - depends on VT && KGDB_KDB + depends on VT && KGDB_KDB && !PARISC default n help KDB can use a PS/2 type keyboard for an input device @@ -124,4 +144,22 @@ config KDB_CONTINUE_CATASTROPHIC CONFIG_KDB_CONTINUE_CATASTROPHIC == 2. KDB forces a reboot. If you are not sure, say 0. +config ARCH_HAS_EARLY_DEBUG + bool + default n + help + If an architecture can definitely handle entering the debugger + when early_param's are parsed then it select this config. + Otherwise, if "kgdbwait" is passed on the kernel command line it + won't actually be processed until dbg_late_init() just after the + call to kgdb_arch_late() is made. + + NOTE: Even if this isn't selected by an architecture we will + still try to register kgdb to handle breakpoints and crashes + when early_param's are parsed, we just won't act on the + "kgdbwait" parameter until dbg_late_init(). If you get a + crash and try to drop into kgdb somewhere between these two + places you might or might not end up being able to use kgdb + depending on exactly how far along the architecture has initted. + endif # KGDB |