diff options
| author | Bharat Bhushan <r65777@freescale.com> | 2013-07-04 08:57:45 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-17 14:49:39 +0200 |
| commit | b12c784123ff805c066449ca580f15a903c24994 (patch) | |
| tree | 9fe3eadbff1e5acae7ad3c9b05c0fd349af1439c /arch/powerpc/kvm/e500_emulate.c | |
| parent | powerpc: export debug registers save function for KVM (diff) | |
| download | linux-b12c784123ff805c066449ca580f15a903c24994.tar.xz linux-b12c784123ff805c066449ca580f15a903c24994.zip | |
KVM: PPC: E500: exit to user space on "ehpriv 1" instruction
"ehpriv 1" instruction is used for setting software breakpoints
by user space. This patch adds support to exit to user space
with "run->debug" have relevant information.
As this is the first point we are using run->debug, also defined
the run->debug structure.
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/e500_emulate.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_emulate.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index b10a01243abd..6163a0318d2a 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -26,6 +26,7 @@ #define XOP_TLBRE 946 #define XOP_TLBWE 978 #define XOP_TLBILX 18 +#define XOP_EHPRIV 270 #ifdef CONFIG_KVM_E500MC static int dbell2prio(ulong param) @@ -82,6 +83,26 @@ static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb) } #endif +static int kvmppc_e500_emul_ehpriv(struct kvm_run *run, struct kvm_vcpu *vcpu, + unsigned int inst, int *advance) +{ + int emulated = EMULATE_DONE; + + switch (get_oc(inst)) { + case EHPRIV_OC_DEBUG: + run->exit_reason = KVM_EXIT_DEBUG; + run->debug.arch.address = vcpu->arch.pc; + run->debug.arch.status = 0; + kvmppc_account_exit(vcpu, DEBUG_EXITS); + emulated = EMULATE_EXIT_USER; + *advance = 0; + break; + default: + emulated = EMULATE_FAIL; + } + return emulated; +} + int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int inst, int *advance) { @@ -130,6 +151,11 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, emulated = kvmppc_e500_emul_tlbivax(vcpu, ea); break; + case XOP_EHPRIV: + emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst, + advance); + break; + default: emulated = EMULATE_FAIL; } |