diff options
| author | Madhavan Srinivasan <maddy@linux.vnet.ibm.com> | 2014-09-09 21:07:35 +0400 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-09-22 12:11:35 +0400 |
| commit | a59c1d9e609c4bbad9ec3b238221ecf3b9ca091b (patch) | |
| tree | ba1f264b568db3ca4ff579ccf6fe935b75d635ec /arch/powerpc/kvm/book3s_pr.c | |
| parent | d2ca32a2d4f029b90e4b8f67879a9dfead0c85fa (diff) | |
| download | linux-a59c1d9e609c4bbad9ec3b238221ecf3b9ca091b.tar.xz | |
powerpc/kvm: support to handle sw breakpoint
This patch adds kernel side support for software breakpoint.
Design is that, by using an illegal instruction, we trap to hypervisor
via Emulation Assistance interrupt, where we check for the illegal instruction
and accordingly we return to Host or Guest. Patch also adds support for
software breakpoint in PR KVM.
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/book3s_pr.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_pr.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index faffb27badd9..6d7370890775 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -1319,6 +1319,9 @@ static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, int r = 0; switch (id) { + case KVM_REG_PPC_DEBUG_INST: + *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT); + break; case KVM_REG_PPC_HIOR: *val = get_reg_val(id, to_book3s(vcpu)->hior); break; |