diff options
| author | Bharat Bhushan <r65777@freescale.com> | 2013-07-04 06:57:45 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-04-08 00:10:47 (GMT) |
| commit | 51b79f33b7b0de4ac171565ad08120d6c97c9e29 (patch) | |
| tree | aef70815fb417cae211a12e30995fb677fc65bd2 /arch/powerpc/include | |
| parent | 3a857b4e3102e7973d0e25d5964d11d1817a83c6 (diff) | |
| download | linux-fsl-qoriq-51b79f33b7b0de4ac171565ad08120d6c97c9e29.tar.xz | |
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>
(cherry picked from commit b12c784123ff805c066449ca580f15a903c24994)
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/disassemble.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_booke.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/include/uapi/asm/kvm.h | 21 |
3 files changed, 27 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/disassemble.h b/arch/powerpc/include/asm/disassemble.h index 9b198d1..856f8de 100644 --- a/arch/powerpc/include/asm/disassemble.h +++ b/arch/powerpc/include/asm/disassemble.h @@ -77,4 +77,8 @@ static inline unsigned int get_d(u32 inst) return inst & 0xffff; } +static inline unsigned int get_oc(u32 inst) +{ + return (inst >> 11) & 0x7fff; +} #endif /* __ASM_PPC_DISASSEMBLE_H__ */ diff --git a/arch/powerpc/include/asm/kvm_booke.h b/arch/powerpc/include/asm/kvm_booke.h index d3c1eb3..dd8f615 100644 --- a/arch/powerpc/include/asm/kvm_booke.h +++ b/arch/powerpc/include/asm/kvm_booke.h @@ -26,7 +26,12 @@ /* LPIDs we support with this build -- runtime limit may be lower */ #define KVMPPC_NR_LPIDS 64 -#define KVMPPC_INST_EHPRIV 0x7c00021c +#define KVMPPC_INST_EHPRIV 0x7c00021c +#define EHPRIV_OC_SHIFT 11 +/* "ehpriv 1" : ehpriv with OC = 1 is used for debug emulation */ +#define EHPRIV_OC_DEBUG 1 +#define KVMPPC_INST_EHPRIV_DEBUG (KVMPPC_INST_EHPRIV | \ + (EHPRIV_OC_DEBUG << EHPRIV_OC_SHIFT)) static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) { diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index 0fb1a6e..ded0607 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -269,7 +269,24 @@ struct kvm_fpu { __u64 fpr[32]; }; +/* + * Defines for h/w breakpoint, watchpoint (read, write or both) and + * software breakpoint. + * These are used as "type" in KVM_SET_GUEST_DEBUG ioctl and "status" + * for KVM_DEBUG_EXIT. + */ +#define KVMPPC_DEBUG_NONE 0x0 +#define KVMPPC_DEBUG_BREAKPOINT (1UL << 1) +#define KVMPPC_DEBUG_WATCH_WRITE (1UL << 2) +#define KVMPPC_DEBUG_WATCH_READ (1UL << 3) struct kvm_debug_exit_arch { + __u64 address; + /* + * exiting to userspace because of h/w breakpoint, watchpoint + * (read, write or both) and software breakpoint. + */ + __u32 status; + __u32 reserved; }; /* for KVM_SET_GUEST_DEBUG */ @@ -281,10 +298,6 @@ struct kvm_guest_debug_arch { * Type denotes h/w breakpoint, read watchpoint, write * watchpoint or watchpoint (both read and write). */ -#define KVMPPC_DEBUG_NONE 0x0 -#define KVMPPC_DEBUG_BREAKPOINT (1UL << 1) -#define KVMPPC_DEBUG_WATCH_WRITE (1UL << 2) -#define KVMPPC_DEBUG_WATCH_READ (1UL << 3) __u32 type; __u32 reserved; } bp[16]; |