add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/um/kernel/irq.c
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@@ -1,8 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0
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 /*
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  * Copyright (C) 2017 - Cambridge Greys Ltd
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  * Copyright (C) 2011 - 2014 Cisco Systems Inc
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  * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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- * Licensed under the GPL
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  * Derived (i.e. mostly copied) from arch/i386/kernel/irq.c:
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  *	Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
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  */
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@@ -248,8 +248,7 @@
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 			to_free = NULL;
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 		}
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 		walk = walk->next;
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-		if (to_free != NULL)
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-			kfree(to_free);
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+		kfree(to_free);
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 	}
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 }
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@@ -355,11 +354,6 @@
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 }
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-void reactivate_fd(int fd, int irqnum)
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-{
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-	/** NOP - we do auto-EOI now **/
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-}
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-
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 void deactivate_fd(int fd, int irqnum)
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 {
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 	struct irq_entry *to_free;
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@@ -390,10 +384,8 @@
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  */
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 int deactivate_all_fds(void)
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 {
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-	unsigned long flags;
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 	struct irq_entry *to_free;
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-	spin_lock_irqsave(&irq_lock, flags);
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 	/* Stop IO. The IRQ loop has no lock so this is our
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 	 * only way of making sure we are safe to dispose
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 	 * of all IRQ handlers
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@@ -409,8 +401,7 @@
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 		);
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 		to_free = to_free->next;
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 	}
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-	garbage_collect_irq_entries();
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-	spin_unlock_irqrestore(&irq_lock, flags);
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+	/* don't garbage collect - we can no longer call kfree() here */
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 	os_close_epoll_fd();
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 	return 0;
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 }
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@@ -454,7 +445,6 @@
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 }
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 EXPORT_SYMBOL(um_request_irq);
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-EXPORT_SYMBOL(reactivate_fd);
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 /*
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  * irq_chip must define at least enable/disable and ack when