Messages in this thread | | | From | Tiejun Chen <> | Subject | [v3][PATCH 0/6] powerpc/book3e: make kgdb to work well | Date | Wed, 27 Feb 2013 11:09:22 +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
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 (6): 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: remove copying the thread_info
arch/powerpc/kernel/exceptions-64e.S | 69 ++++++++++++++++++++++++++++++++-- arch/powerpc/kernel/kgdb.c | 41 +++++--------------- drivers/misc/kgdbts.c | 2 + 3 files changed, 77 insertions(+), 35 deletions(-)
Tiejun
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