add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/kernel/crash_dump.c
..
..
@@ -1,14 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 #include <linux/kernel.h>
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 #include <linux/crash_dump.h>
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 #include <linux/init.h>
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 #include <linux/errno.h>
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 #include <linux/export.h>
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-
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-/*
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- * If we have booted due to a crash, max_pfn will be a very low value. We need
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- * to know the amount of memory that the previous kernel used.
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- */
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-unsigned long saved_max_pfn;
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 /*
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  * stores the physical address of elf header of crash image