On 04.07.2013, at 08:57, Bharat Bhushan wrote: > From: Bharat Bhushan <bharat.bhushan@xxxxxxxxxxxxx> > > 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(-) > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
