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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-08-27 14:29:20 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2009-09-01 11:12:32 +0100 |
| commit | acde31dc467797ccae3a55b791a77af446cce018 (patch) | |
| tree | ef7a46bef9485830cc8f104889def098e1604eb7 /arch/x86/kernel/aperture_64.c | |
| parent | 0494e08281d08f0a3dc442eb5e5cecc125b53b27 (diff) | |
| download | kernel-crypto-acde31dc467797ccae3a55b791a77af446cce018.tar.gz kernel-crypto-acde31dc467797ccae3a55b791a77af446cce018.tar.xz kernel-crypto-acde31dc467797ccae3a55b791a77af446cce018.zip | |
kmemleak: Ignore the aperture memory hole on x86_64
This block is allocated with alloc_bootmem() and scanned by kmemleak but
the kernel direct mapping may no longer exist. This patch tells kmemleak
to ignore this memory hole. The dma32_bootmem_ptr in
dma32_reserve_bootmem() is also ignored.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/aperture_64.c')
| -rw-r--r-- | arch/x86/kernel/aperture_64.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index 676debfc170..128111d8ffe 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -20,6 +20,7 @@ #include <linux/bitops.h> #include <linux/ioport.h> #include <linux/suspend.h> +#include <linux/kmemleak.h> #include <asm/e820.h> #include <asm/io.h> #include <asm/iommu.h> @@ -94,6 +95,11 @@ static u32 __init allocate_aperture(void) * code for safe */ p = __alloc_bootmem_nopanic(aper_size, aper_size, 512ULL<<20); + /* + * Kmemleak should not scan this block as it may not be mapped via the + * kernel direct mapping. + */ + kmemleak_ignore(p); if (!p || __pa(p)+aper_size > 0xffffffff) { printk(KERN_ERR "Cannot allocate aperture memory hole (%p,%uK)\n", |