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| 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/include | |
| 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/include')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 73063ef53694..dbd160f16cb0 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -38,6 +38,12 @@ #include <asm/paca.h> #endif +/* + * KVMPPC_INST_SW_BREAKPOINT is debug Instruction + * for supporting software breakpoint. + */ +#define KVMPPC_INST_SW_BREAKPOINT 0x00dddd00 + enum emulation_result { EMULATE_DONE, /* no further processing */ EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ |