lkml.org 
[lkml]   [2009]   [Aug]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Subject[PATCH] kmemleak: Ignore the aperture memory hole on x86_64
    From
    Date
    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.

    Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    ---
    arch/x86/kernel/aperture_64.c | 5 +++++
    1 files changed, 5 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
    index 676debf..cb690b3 100644
    --- a/arch/x86/kernel/aperture_64.c
    +++ b/arch/x86/kernel/aperture_64.c
    @@ -94,6 +94,11 @@ 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",



    \
     
     \ /
      Last update: 2009-08-15 00:51    [W:0.019 / U:0.524 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site