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| author | Michael S. Tsirkin <mst@redhat.com> | 2012-08-14 19:20:28 +0300 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-08-14 22:35:22 -0300 |
| commit | 28a6fdabb3ea775d3d707afd9d2728b3ced2c34d (patch) | |
| tree | 13e8ec656afd83c2a8064256668ae665c81d4912 /arch | |
| parent | dbcb4e798072d114fe68813f39a9efd239ab99c0 (diff) | |
| download | linux-28a6fdabb3ea775d3d707afd9d2728b3ced2c34d.tar.gz linux-28a6fdabb3ea775d3d707afd9d2728b3ced2c34d.tar.bz2 linux-28a6fdabb3ea775d3d707afd9d2728b3ced2c34d.zip | |
KVM: x86: drop parameter validation in ioapic/pic
We validate irq pin number when routing is setup, so
code handling illegal irq # in pic and ioapic on each injection
is never called.
Drop it, replace with BUG_ON to catch out of bounds access bugs.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/i8259.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index e498b18f010c..90c84f947d45 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -190,17 +190,17 @@ void kvm_pic_update_irq(struct kvm_pic *s) int kvm_pic_set_irq(struct kvm_pic *s, int irq, int irq_source_id, int level) { - int ret = -1; + int ret, irq_level; + + BUG_ON(irq < 0 || irq >= PIC_NUM_PINS); pic_lock(s); - if (irq >= 0 && irq < PIC_NUM_PINS) { - int irq_level = __kvm_irq_line_state(&s->irq_states[irq], - irq_source_id, level); - ret = pic_set_irq1(&s->pics[irq >> 3], irq & 7, irq_level); - pic_update_irq(s); - trace_kvm_pic_set_irq(irq >> 3, irq & 7, s->pics[irq >> 3].elcr, - s->pics[irq >> 3].imr, ret == 0); - } + irq_level = __kvm_irq_line_state(&s->irq_states[irq], + irq_source_id, level); + ret = pic_set_irq1(&s->pics[irq >> 3], irq & 7, irq_level); + pic_update_irq(s); + trace_kvm_pic_set_irq(irq >> 3, irq & 7, s->pics[irq >> 3].elcr, + s->pics[irq >> 3].imr, ret == 0); pic_unlock(s); return ret; |