Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

[ARM] prevent the vmalloc cmdline argument from eating all memory

Browse source 
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>
This commit is contained in:
Nicolas Pitre 2008-09-19 10:43:06 -04:00 • committed by Russell King
parent 6db015e49c
commit 9210807cb5
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
arch/arm/mm/mmu.c
View file

@ -646,6 +646,13 @@ static void __init early_vmalloc(char **arg)
"vmalloc area too small, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
if (vmalloc_reserve > VMALLOC_END - (PAGE_OFFSET + SZ_32M)) {
vmalloc_reserve = VMALLOC_END - (PAGE_OFFSET + SZ_32M);
printk(KERN_WARNING
"vmalloc area is too big, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
}
__early_param("vmalloc=", early_vmalloc);