diff options
| author | Xiantao Zhang <xiantao.zhang@intel.com> | 2008-11-21 20:58:11 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-31 16:54:59 +0200 |
| commit | 7d637978151511148912fe2ea2bac9f9c64f5c35 (patch) | |
| tree | 22e335962c537535f3afae23f5f46b76b7d6e248 /arch/ia64/kvm/vmm.c | |
| parent | d176720d34c72f7a8474a12204add93e54fe3ef1 (diff) | |
KVM: ia64: Define printk function for kvm-intel module
kvm-intel module is relocated to an isolated address space
with kernel, so it can't call host kernel's printk for debug
purpose. In the module, we implement the printk to output debug
info of vmm.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/ia64/kvm/vmm.c')
| -rw-r--r-- | arch/ia64/kvm/vmm.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/ia64/kvm/vmm.c b/arch/ia64/kvm/vmm.c index 2275bf4e681..957779593c2 100644 --- a/arch/ia64/kvm/vmm.c +++ b/arch/ia64/kvm/vmm.c @@ -62,5 +62,31 @@ void vmm_spin_unlock(spinlock_t *lock) { _vmm_raw_spin_unlock(lock); } + +static void vcpu_debug_exit(struct kvm_vcpu *vcpu) +{ + struct exit_ctl_data *p = &vcpu->arch.exit_data; + long psr; + + local_irq_save(psr); + p->exit_reason = EXIT_REASON_DEBUG; + vmm_transition(vcpu); + local_irq_restore(psr); +} + +asmlinkage int printk(const char *fmt, ...) +{ + struct kvm_vcpu *vcpu = current_vcpu; + va_list args; + int r; + + memset(vcpu->arch.log_buf, 0, VMM_LOG_LEN); + va_start(args, fmt); + r = vsnprintf(vcpu->arch.log_buf, VMM_LOG_LEN, fmt, args); + va_end(args); + vcpu_debug_exit(vcpu); + return r; +} + module_init(kvm_vmm_init) module_exit(kvm_vmm_exit) |