[v3][PATCH 0/6] powerpc/book3e: make kgdb to work well
tiejun.chen
tiejun.chen at windriver.com
Wed Feb 27 14:09:01 EST 2013
On 02/27/2013 11:04 AM, Tiejun Chen wrote:
> This patchset is used to support kgdb/gdb on book3e.
>
> Validated on p4080ds and p5040ds with test single step and breakpoint
Please ignore this thread since looks I'm missing to CC Jason :(
Tiejun
>
> 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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>
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