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KVM: PPC: debug stub interface parameter defined

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This patch defines the interface parameter for KVM_SET_GUEST_DEBUG
ioctl support. Follow up patches will use this for setting up
hardware breakpoints, watchpoints and software breakpoints.

Also kvm_arch_vcpu_ioctl_set_guest_debug() is brought one level below.
This is because I am not sure what is required for book3s. So this ioctl
behaviour will not change for book3s.

Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Bharat Bhushan 2013-04-08 00:32:12 +00:00 • committed by Alexander Graf
parent adccf65ca4
commit 092d62ee93
4 changed files with 35 additions and 6 deletions
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23
arch/powerpc/include/uapi/asm/kvm.h
View file

@ -272,8 +272,31 @@ struct kvm_debug_exit_arch {
/* for KVM_SET_GUEST_DEBUG */ /* for KVM_SET_GUEST_DEBUG */
struct kvm_guest_debug_arch { struct kvm_guest_debug_arch {
struct {
/* H/W breakpoint/watchpoint address */
__u64 addr;
/*
* 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];
}; };
/* Debug related defines */
/*
* kvm_guest_debug->control is a 32 bit field. The lower 16 bits are generic
* and upper 16 bits are architecture specific. Architecture specific defines
* that ioctl is for setting hardware breakpoint or software breakpoint.
*/
#define KVM_GUESTDBG_USE_SW_BP 0x00010000
#define KVM_GUESTDBG_USE_HW_BP 0x00020000
/* definition of registers in kvm_run */ /* definition of registers in kvm_run */
struct kvm_sync_regs { struct kvm_sync_regs {
}; };

6
arch/powerpc/kvm/book3s.c
View file

@ -612,6 +612,12 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
return 0; return 0;
} }
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
return -EINVAL;
}
void kvmppc_decrementer_func(unsigned long data) void kvmppc_decrementer_func(unsigned long data)
{ {
struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;

6
arch/powerpc/kvm/booke.c
View file

@ -1526,6 +1526,12 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
return r; return r;
} }
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
return -EINVAL;
}
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{ {
return -ENOTSUPP; return -ENOTSUPP;

6
arch/powerpc/kvm/powerpc.c
View file

@ -531,12 +531,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
#endif #endif
} }
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg)
{
return -EINVAL;
}
static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
struct kvm_run *run) struct kvm_run *run)
{ {