1. 11 Dec, 2009 1 commit
    • Yinghai Lu's avatar
      x86: Use find_e820() instead of hard coded trampoline address · 893f38d1
      Yinghai Lu authored
      Jens found the following crash/regression:
      
      [    0.000000] found SMP MP-table at [ffff8800000fdd80] fdd80
      [    0.000000] Kernel panic - not syncing: Overlapping early reservations 12-f011 MP-table mpc to 0-fff BIOS data page
      
      and
      
      [    0.000000] Kernel panic - not syncing: Overlapping early reservations 12-f011 MP-table mpc to 6000-7fff TRAMPOLINE
      
      and bisected it to b24c2a92
      
       ("x86: Move find_smp_config()
      earlier and avoid bootmem usage").
      
      It turns out the BIOS is using the first 64k for mptable,
      without reserving it.
      
      So try to find good range for the real-mode trampoline instead of
      hard coding it, in case some bios tries to use that range for sth.
      Reported-by: default avatarJens Axboe <jens.axboe@oracle.com>
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Tested-by: default avatarJens Axboe <jens.axboe@oracle.com>
      Cc: Randy Dunlap <randy.dunlap@oracle.com>
      LKML-Reference: <4B21630A.6000308@kernel.org>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      893f38d1
  2. 12 Oct, 2009 1 commit
  3. 20 Sep, 2009 1 commit
  4. 08 Dec, 2008 1 commit
    • Rafael J. Wysocki's avatar
      x86: change static allocation of trampoline area · 3e1e9002
      Rafael J. Wysocki authored
      
      
      Impact: fix trampoline sizing bug, save space
      
      While debugging a suspend-to-RAM related issue it occured to me that
      if the trampoline code had grown past 4 KB, we would have been
      allocating too little memory for it, since the 4 KB size of the
      trampoline is hardcoded into arch/x86/kernel/e820.c .  Change that
      by making the kernel compute the trampoline size and allocate as much
      memory as necessary.
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      3e1e9002
  5. 25 May, 2008 1 commit
    • Yinghai Lu's avatar
      x86: extend e820 ealy_res support 32bit · a4c81cf6
      Yinghai Lu authored
      
      
      move early_res related from e820_64.c to e820.c
      make edba detection to be done in head32.c
      remove smp_alloc_memory, because we have fixed trampoline address now.
      Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
      
       arch/x86/kernel/e820.c              |  214 ++++++++++++++++++++++++++++++++++++
       arch/x86/kernel/e820_64.c           |  196 --------------------------------
       arch/x86/kernel/head32.c            |   76 ++++++++++++
       arch/x86/kernel/setup_32.c          |  109 +++---------------
       arch/x86/kernel/smpboot.c           |   17 --
       arch/x86/kernel/trampoline.c        |    2
       arch/x86/mach-voyager/voyager_smp.c |    9 -
       include/asm-x86/e820.h              |    6 +
       include/asm-x86/e820_64.h           |    9 -
       include/asm-x86/smp.h               |    1
       arch/x86/kernel/e820.c              |  214 ++++++++++++++++++++++++++++++++++++
       arch/x86/kernel/e820_64.c           |  196 --------------------------------
       arch/x86/kernel/head32.c            |   76 ++++++++++++
       arch/x86/kernel/setup_32.c          |  109 +++---------------
       arch/x86/kernel/smpboot.c           |   17 --
       arch/x86/kernel/trampoline.c        |    2
       arch/x86/mach-voyager/voyager_smp.c |    9 -
       include/asm-x86/e820.h              |    6 +
       include/asm-x86/e820_64.h           |    9 -
       include/asm-x86/smp.h               |    1
       arch/x86/kernel/e820.c              |  214 ++++++++++++++++++++++++++++++++++++
       arch/x86/kernel/e820_64.c           |  196 --------------------------------
       arch/x86/kernel/head32.c            |   76 ++++++++++++
       arch/x86/kernel/setup_32.c          |  109 +++---------------
       arch/x86/kernel/smpboot.c           |   17 --
       arch/x86/kernel/trampoline.c        |    2
       arch/x86/mach-voyager/voyager_smp.c |    9 -
       include/asm-x86/e820.h              |    6 +
       include/asm-x86/e820_64.h           |    9 -
       include/asm-x86/smp.h               |    1
       10 files changed, 320 insertions(+), 319 deletions(-)
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      a4c81cf6
  6. 17 Apr, 2008 1 commit