[ARM] prevent the vmalloc cmdline argument from eating all memory
Commit 8d5796d2ec
allows for the vmalloc
area to be resized from the kernel cmdline. Make sure it cannot overlap
with RAM entirely.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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1 changed files with 7 additions and 0 deletions
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@ -646,6 +646,13 @@ static void __init early_vmalloc(char **arg)
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"vmalloc area too small, limiting to %luMB\n",
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vmalloc_reserve >> 20);
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}
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if (vmalloc_reserve > VMALLOC_END - (PAGE_OFFSET + SZ_32M)) {
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vmalloc_reserve = VMALLOC_END - (PAGE_OFFSET + SZ_32M);
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printk(KERN_WARNING
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"vmalloc area is too big, limiting to %luMB\n",
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vmalloc_reserve >> 20);
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}
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}
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__early_param("vmalloc=", early_vmalloc);
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