diff options
Diffstat (limited to 'drivers/lguest')
| -rw-r--r-- | drivers/lguest/hypercalls.c | 2 | ||||
| -rw-r--r-- | drivers/lguest/interrupts_and_traps.c | 20 | ||||
| -rw-r--r-- | drivers/lguest/lg.h | 10 | ||||
| -rw-r--r-- | drivers/lguest/lguest_user.c | 10 |
4 files changed, 21 insertions, 21 deletions
diff --git a/drivers/lguest/hypercalls.c b/drivers/lguest/hypercalls.c index 7827671..6f8c70a 100644 --- a/drivers/lguest/hypercalls.c +++ b/drivers/lguest/hypercalls.c @@ -80,7 +80,7 @@ static void do_hcall(struct lg_cpu *cpu, struct hcall_args *args) guest_set_pmd(lg, args->arg1, args->arg2); break; case LHCALL_SET_CLOCKEVENT: - guest_set_clockevent(lg, args->arg1); + guest_set_clockevent(cpu, args->arg1); break; case LHCALL_TS: /* This sets the TS flag, as we saw used in run_guest(). */ diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c index 2b66f79..22c692a 100644 --- a/drivers/lguest/interrupts_and_traps.c +++ b/drivers/lguest/interrupts_and_traps.c @@ -470,13 +470,13 @@ void copy_traps(const struct lguest *lg, struct desc_struct *idt, * infrastructure to set a callback at that time. * * 0 means "turn off the clock". */ -void guest_set_clockevent(struct lguest *lg, unsigned long delta) +void guest_set_clockevent(struct lg_cpu *cpu, unsigned long delta) { ktime_t expires; if (unlikely(delta == 0)) { /* Clock event device is shutting down. */ - hrtimer_cancel(&lg->hrt); + hrtimer_cancel(&cpu->hrt); return; } @@ -484,25 +484,25 @@ void guest_set_clockevent(struct lguest *lg, unsigned long delta) * all the time between now and the timer interrupt it asked for. This * is almost always the right thing to do. */ expires = ktime_add_ns(ktime_get_real(), delta); - hrtimer_start(&lg->hrt, expires, HRTIMER_MODE_ABS); + hrtimer_start(&cpu->hrt, expires, HRTIMER_MODE_ABS); } /* This is the function called when the Guest's timer expires. */ static enum hrtimer_restart clockdev_fn(struct hrtimer *timer) { - struct lguest *lg = container_of(timer, struct lguest, hrt); + struct lg_cpu *cpu = container_of(timer, struct lg_cpu, hrt); /* Remember the first interrupt is the timer interrupt. */ - set_bit(0, lg->irqs_pending); + set_bit(0, cpu->lg->irqs_pending); /* If the Guest is actually stopped, we need to wake it up. */ - if (lg->halted) - wake_up_process(lg->tsk); + if (cpu->lg->halted) + wake_up_process(cpu->lg->tsk); return HRTIMER_NORESTART; } /* This sets up the timer for this Guest. */ -void init_clockdev(struct lguest *lg) +void init_clockdev(struct lg_cpu *cpu) { - hrtimer_init(&lg->hrt, CLOCK_REALTIME, HRTIMER_MODE_ABS); - lg->hrt.function = clockdev_fn; + hrtimer_init(&cpu->hrt, CLOCK_REALTIME, HRTIMER_MODE_ABS); + cpu->hrt.function = clockdev_fn; } diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h index a4ebd41..7da7b3f 100644 --- a/drivers/lguest/lg.h +++ b/drivers/lguest/lg.h @@ -47,6 +47,9 @@ struct lg_cpu { /* If a hypercall was asked for, this points to the arguments. */ struct hcall_args *hcall; u32 next_hcall; + + /* Virtual clock device */ + struct hrtimer hrt; }; /* The private info the thread maintains about the guest. */ @@ -95,9 +98,6 @@ struct lguest struct lguest_arch arch; - /* Virtual clock device */ - struct hrtimer hrt; - /* Pending virtual interrupts */ DECLARE_BITMAP(irqs_pending, LGUEST_IRQS); }; @@ -145,8 +145,8 @@ void setup_default_idt_entries(struct lguest_ro_state *state, const unsigned long *def); void copy_traps(const struct lguest *lg, struct desc_struct *idt, const unsigned long *def); -void guest_set_clockevent(struct lguest *lg, unsigned long delta); -void init_clockdev(struct lguest *lg); +void guest_set_clockevent(struct lg_cpu *cpu, unsigned long delta); +void init_clockdev(struct lg_cpu *cpu); bool check_syscall_vector(struct lguest *lg); int init_interrupts(void); void free_interrupts(void); diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c index 2562082..f231b9b 100644 --- a/drivers/lguest/lguest_user.c +++ b/drivers/lguest/lguest_user.c @@ -104,6 +104,7 @@ static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip) cpu->id = id; cpu->lg = container_of((cpu - id), struct lguest, cpus[0]); cpu->lg->nr_cpus++; + init_clockdev(cpu); return 0; } @@ -180,9 +181,6 @@ static int initialize(struct file *file, const unsigned long __user *input) * address. */ lguest_arch_setup_regs(lg, args[3]); - /* The timer for lguest's clock needs initialization. */ - init_clockdev(lg); - /* We keep a pointer to the Launcher task (ie. current task) for when * other Guests want to wake this one (inter-Guest I/O). */ lg->tsk = current; @@ -273,6 +271,7 @@ static ssize_t write(struct file *file, const char __user *in, static int close(struct inode *inode, struct file *file) { struct lguest *lg = file->private_data; + unsigned int i; /* If we never successfully initialized, there's nothing to clean up */ if (!lg) @@ -281,8 +280,9 @@ static int close(struct inode *inode, struct file *file) /* We need the big lock, to protect from inter-guest I/O and other * Launchers initializing guests. */ mutex_lock(&lguest_lock); - /* Cancels the hrtimer set via LHCALL_SET_CLOCKEVENT. */ - hrtimer_cancel(&lg->hrt); + for (i = 0; i < lg->nr_cpus; i++) + /* Cancels the hrtimer set via LHCALL_SET_CLOCKEVENT. */ + hrtimer_cancel(&lg->cpus[i].hrt); /* Free up the shadow page tables for the Guest. */ free_guest_pagetable(lg); /* Now all the memory cleanups are done, it's safe to release the |
