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virtio: handle queue overflow

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This commit is contained in:
K. Lange 2023-04-30 19:09:49 +09:00
parent a7e6b1eaae
commit e9811a0708
1 changed files with 2 additions and 2 deletions
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4
kernel/arch/aarch64/virtio.c
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@ -228,7 +228,7 @@ static void virtio_tablet_thread(void * data) {
uint16_t them = queue->used.index;
for (; index < them; index++) {
for (; index != them; index++) {
asm volatile ("dc ivac, %0\ndsb sy" :: "r"(&buffers[index%queue_size]) : "memory");
struct virtio_input_event evt = buffers[index%queue_size];
while (evt.type == 0xFF) {
@ -376,7 +376,7 @@ static void virtio_keyboard_thread(void * data) {
uint16_t them = queue->used.index;
for (; index < them; index++) {
for (; index != them; index++) {
asm volatile ("dc ivac, %0\ndsb sy" :: "r"(&buffers[index%queue_size]) : "memory");
struct virtio_input_event evt = buffers[index%queue_size];
while (evt.type == 0xFF) {