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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/xen/events/events_fifo.c
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@@ -82,7 +82,7 @@
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 #endif
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-static inline event_word_t *event_word_from_port(unsigned port)
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+static inline event_word_t *event_word_from_port(evtchn_port_t port)
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 {
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 	unsigned i = port / EVENT_WORDS_PER_PAGE;
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@@ -138,9 +138,8 @@
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 		array_page[i] = 1 << EVTCHN_FIFO_MASKED;
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 }
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-static int evtchn_fifo_setup(struct irq_info *info)
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+static int evtchn_fifo_setup(evtchn_port_t port)
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 {
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-	unsigned port = info->evtchn;
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 	unsigned new_array_pages;
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 	int ret;
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@@ -186,36 +185,37 @@
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 	return ret;
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 }
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-static void evtchn_fifo_bind_to_cpu(struct irq_info *info, unsigned cpu)
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+static void evtchn_fifo_bind_to_cpu(evtchn_port_t evtchn, unsigned int cpu, 
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+				    unsigned int old_cpu)
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 {
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 	/* no-op */
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 }
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-static void evtchn_fifo_clear_pending(unsigned port)
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+static void evtchn_fifo_clear_pending(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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 	sync_clear_bit(EVTCHN_FIFO_BIT(PENDING, word), BM(word));
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 }
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-static void evtchn_fifo_set_pending(unsigned port)
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+static void evtchn_fifo_set_pending(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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 	sync_set_bit(EVTCHN_FIFO_BIT(PENDING, word), BM(word));
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 }
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-static bool evtchn_fifo_is_pending(unsigned port)
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+static bool evtchn_fifo_is_pending(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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 	return sync_test_bit(EVTCHN_FIFO_BIT(PENDING, word), BM(word));
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 }
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-static void evtchn_fifo_mask(unsigned port)
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+static void evtchn_fifo_mask(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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 	sync_set_bit(EVTCHN_FIFO_BIT(MASKED, word), BM(word));
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 }
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-static bool evtchn_fifo_is_masked(unsigned port)
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+static bool evtchn_fifo_is_masked(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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 	return sync_test_bit(EVTCHN_FIFO_BIT(MASKED, word), BM(word));
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@@ -231,6 +231,9 @@
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 	w = *word;
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 	do {
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+		if (!(w & (1 << EVTCHN_FIFO_MASKED)))
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+			return true;
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+
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 		if (w & (1 << EVTCHN_FIFO_PENDING))
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 			return false;
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@@ -242,7 +245,7 @@
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 	return true;
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 }
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-static void evtchn_fifo_unmask(unsigned port)
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+static void evtchn_fifo_unmask(evtchn_port_t port)
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 {
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 	event_word_t *word = event_word_from_port(port);
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@@ -275,7 +278,7 @@
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 {
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 	struct evtchn_fifo_queue *q = &per_cpu(cpu_queue, cpu);
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 	uint32_t head;
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-	unsigned port;
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+	evtchn_port_t port;
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 	event_word_t *word;
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 	head = q->head[priority];