Messages in this thread | | | From | Tiejun Chen <> | Subject | [v4][PATCH 0/7] powerpc/book3e: powerpc/book3e: make kgdb to work well | Date | Mon, 11 Mar 2013 19:02:39 +0800 |
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This patchset is used to support kgdb/gdb on book3e.
Validated on p4080ds and p5040ds with test single step and breakpoint
v4:
* use DEFINE_PER_CPU to allocate kgdb's thread_info * add patch 7 to make usre copy thread_info only !__check_irq_replay * leave "andi. r14,r11,MSR_PR" out of "#ifndef CONFIG_KGDB" since cr0 is still used lately. * retest
v3:
* make work when enable CONFIG_RELOCATABLE * fix one typo in patch, "powerpc/book3e: store critical/machine/debug exception thread info": ld r1,PACAKSAVE(r13); -> ld r14,PACAKSAVE(r13); * remove copying the thread_info since booke and book3e always copy the thead_info now when we enter the debug exception, and so drop the v2 patch, "book3e/kgdb: Fix a single stgep case of lazy IRQ"
v2:
* Make sure we cover CONFIG_PPC_BOOK3E_64 safely * Use LOAD_REG_IMMEDIATE() to load properly the value of the constant expression in load debug exception stack * Copy thread infor form the kernel stack coming from usr * Rebase latest powerpc git tree
v1: * Copy thread info only when we are from !user mode since we'll get kernel stack coming from usr directly. * remove save/restore EX_R14/EX_R15 since DBG_EXCEPTION_PROLOG already covered this. * use CURRENT_THREAD_INFO() conveniently to get thread. * fix some typos * add a patch to make sure gdb can generate a single step properly to invoke a kgdb state. * add a patch to if we need to replay an interrupt, we shouldn't restore that previous backup thread info to make sure we can replay an interrupt lately with a proper thread info. * rebase latest powerpc git tree
v0: This patchset is used to support kgdb for book3e.
------ Tiejun Chen (7): powerpc/book3e: load critical/machine/debug exception stack powerpc/book3e: store critical/machine/debug exception thread info book3e/kgdb: update thread's dbcr0 powerpc/book3e: support kgdb for kernel space kgdb/kgdbts: support ppc64 powerpc/kgdb: use DEFINE_PER_CPU to allocate kgdb's thread_info book3e/kgdb: Fix a single stgep case of lazy IRQ
arch/powerpc/kernel/exceptions-64e.S | 68 ++++++++++++++++++++++++++++++++-- arch/powerpc/kernel/irq.c | 10 +++++ arch/powerpc/kernel/kgdb.c | 21 +++++++---- drivers/misc/kgdbts.c | 2 + 4 files changed, 90 insertions(+), 11 deletions(-)
Tiejun
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