diff options
Diffstat (limited to 'drivers/lguest/interrupts_and_traps.c')
| -rw-r--r-- | drivers/lguest/interrupts_and_traps.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c index 468faf8..306b93c 100644 --- a/drivers/lguest/interrupts_and_traps.c +++ b/drivers/lguest/interrupts_and_traps.c @@ -178,7 +178,7 @@ void maybe_do_interrupt(struct lg_cpu *cpu) /* Look at the IDT entry the Guest gave us for this interrupt. The * first 32 (FIRST_EXTERNAL_VECTOR) entries are for traps, so we skip * over them. */ - idt = &lg->arch.idt[FIRST_EXTERNAL_VECTOR+irq]; + idt = &cpu->arch.idt[FIRST_EXTERNAL_VECTOR+irq]; /* If they don't have a handler (yet?), we just ignore it */ if (idt_present(idt->a, idt->b)) { /* OK, mark it no longer pending and deliver it. */ @@ -251,15 +251,15 @@ int deliver_trap(struct lg_cpu *cpu, unsigned int num) { /* Trap numbers are always 8 bit, but we set an impossible trap number * for traps inside the Switcher, so check that here. */ - if (num >= ARRAY_SIZE(cpu->lg->arch.idt)) + if (num >= ARRAY_SIZE(cpu->arch.idt)) return 0; /* Early on the Guest hasn't set the IDT entries (or maybe it put a * bogus one in): if we fail here, the Guest will be killed. */ - if (!idt_present(cpu->lg->arch.idt[num].a, cpu->lg->arch.idt[num].b)) + if (!idt_present(cpu->arch.idt[num].a, cpu->arch.idt[num].b)) return 0; - set_guest_interrupt(cpu, cpu->lg->arch.idt[num].a, - cpu->lg->arch.idt[num].b, has_err(num)); + set_guest_interrupt(cpu, cpu->arch.idt[num].a, + cpu->arch.idt[num].b, has_err(num)); return 1; } @@ -385,7 +385,7 @@ static void set_trap(struct lguest *lg, struct desc_struct *trap, * * We saw the Guest setting Interrupt Descriptor Table (IDT) entries with the * LHCALL_LOAD_IDT_ENTRY hypercall before: that comes here. */ -void load_guest_idt_entry(struct lguest *lg, unsigned int num, u32 lo, u32 hi) +void load_guest_idt_entry(struct lg_cpu *cpu, unsigned int num, u32 lo, u32 hi) { /* Guest never handles: NMI, doublefault, spurious interrupt or * hypercall. We ignore when it tries to set them. */ @@ -394,13 +394,13 @@ void load_guest_idt_entry(struct lguest *lg, unsigned int num, u32 lo, u32 hi) /* Mark the IDT as changed: next time the Guest runs we'll know we have * to copy this again. */ - lg->changed |= CHANGED_IDT; + cpu->lg->changed |= CHANGED_IDT; /* Check that the Guest doesn't try to step outside the bounds. */ - if (num >= ARRAY_SIZE(lg->arch.idt)) - kill_guest(lg, "Setting idt entry %u", num); + if (num >= ARRAY_SIZE(cpu->arch.idt)) + kill_guest(cpu->lg, "Setting idt entry %u", num); else - set_trap(lg, &lg->arch.idt[num], num, lo, hi); + set_trap(cpu->lg, &cpu->arch.idt[num], num, lo, hi); } /* The default entry for each interrupt points into the Switcher routines which @@ -436,14 +436,14 @@ void setup_default_idt_entries(struct lguest_ro_state *state, /*H:240 We don't use the IDT entries in the "struct lguest" directly, instead * we copy them into the IDT which we've set up for Guests on this CPU, just * before we run the Guest. This routine does that copy. */ -void copy_traps(const struct lguest *lg, struct desc_struct *idt, +void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt, const unsigned long *def) { unsigned int i; /* We can simply copy the direct traps, otherwise we use the default * ones in the Switcher: they will return to the Host. */ - for (i = 0; i < ARRAY_SIZE(lg->arch.idt); i++) { + for (i = 0; i < ARRAY_SIZE(cpu->arch.idt); i++) { /* If no Guest can ever override this trap, leave it alone. */ if (!direct_trap(i)) continue; @@ -452,8 +452,8 @@ void copy_traps(const struct lguest *lg, struct desc_struct *idt, * Interrupt gates (type 14) disable interrupts as they are * entered, which we never let the Guest do. Not present * entries (type 0x0) also can't go direct, of course. */ - if (idt_type(lg->arch.idt[i].a, lg->arch.idt[i].b) == 0xF) - idt[i] = lg->arch.idt[i]; + if (idt_type(cpu->arch.idt[i].a, cpu->arch.idt[i].b) == 0xF) + idt[i] = cpu->arch.idt[i]; else /* Reset it to the default. */ default_idt_entry(&idt[i], i, def[i]); |