On 04.07.2013, at 08:57, Bharat Bhushan wrote:
> From: Bharat Bhushan
>
> Note: These patches depends on https://lkml.org/lkml/2013/7/4/49.
>
> This patchset adds the userspace debug support for booke/bookehv.
> this is tested on powerpc e500v2/e500mc devices.
Thanks, applied to kvm-ppc-queue.
Alex
>
> We are now assuming that debug resource will not be used by kernel for
> its own debugging. It will be used for only kernel user process debugging.
> So the kernel debug load interface during context_to is used to load
> debug conext for that selected process.
>
> v5->v6
> - Earlier it was a patchset of six patches. Now this is devided into
> two parts: 1) powerpc spcific changes 2) kvm specific changes.
> This patchset now contains only KVM specific changes.
> - using "ehpriv 1" (earlier using "ehpriv") for software breakpoint
> -
>
> v4->v5
> - Some comments reworded and other cleanup (like change of function name etc)
> - Added a function for setting MSRP rather than inline
>
> v3->v4
> - 4 out of 7 patches of initial patchset were applied.
> This patchset is on and above those 4 patches
> - KVM local "struct kvmppc_booke_debug_reg" is replaced by
> powerpc global "struct debug_reg"
> - use switch_booke_debug_regs() for debug register context switch.
> - Save DBSR before kernel pre-emption is enabled.
> - Some more cleanup
>
> v2->v3
> - We are now assuming that debug resource will not be used by
> kernel for its own debugging.
> It will be used for only kernel user process debugging.
> So the kernel debug load interface during context_to is
> used to load debug conext for that selected process.
>
> v1->v2
> - Debug registers are save/restore in vcpu_put/vcpu_get.
> Earlier the debug registers are saved/restored in guest entry/exit
>
> Bharat Bhushan (4):
> powerpc: export debug registers save function for KVM
> KVM: PPC: exit to user space on "ehpriv 1" instruction
> KVM: PPC: Using "struct debug_reg"
> KVM: PPC: Add userspace debug stub support
>
> arch/powerpc/include/asm/disassemble.h |4 +
> arch/powerpc/include/asm/kvm_booke.h |7 +-
> arch/powerpc/include/asm/kvm_host.h| 16 +--
> arch/powerpc/include/asm/switch_to.h |1 +
> arch/powerpc/include/uapi/asm/kvm.h| 22 ++-
> arch/powerpc/kernel/process.c |3 +-
> arch/powerpc/kvm/booke.c | 275
> arch/powerpc/kvm/booke.h |5 +
> arch/powerpc/kvm/e500_emulate.c| 26 +++
> 9 files changed, 312 insertions(+), 47 deletions(-)
>
>
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