linux/arch/x86_64
Vivek Goyal 983d5dbdb2 [PATCH] x86_64: Fix SMP bootup with CONFIG_KDUMP enabled
o This fix was posted for i386 long back. Posting it for x86_64.

  http://marc.theaimsgroup.com/?l=linux-kernel&m=110380103229830&w=2

o This patch fixes the problem of secondary cpus boot up. This situation
  is faced when kernel is built for default locations like 16MB and
  onwards. In this configuration, only primary cpu (BP) comes and
  secondary cpus don't boot.

o Problem occurs because in trampoline code, lgdt is not able to load the
  GDT as it happens to be situated beyond 16MB. This is due to the fact
  that cpu is still in real mode and default operand size is 16bit.

o This patch uses lgdtl instead of lgdt to force operand size to 32
  instead of 16.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:09:58 -08:00
..
boot Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-01-10 08:21:33 -08:00
crypto [CRYPTO] Allow AES C/ASM implementations to coexist 2006-01-09 14:15:39 -08:00
ia32 [PATCH] x86_64: allow setting RF in EFLAGS 2006-01-11 19:05:00 -08:00
kernel [PATCH] x86_64: Fix SMP bootup with CONFIG_KDUMP enabled 2006-01-11 19:09:58 -08:00
lib [PATCH] x86_64: Display meaningful part of filename during BUG() 2006-01-11 19:05:03 -08:00
mm [PATCH] x86_64: Allow kernel page tables upto the end of memory 2006-01-11 19:05:03 -08:00
oprofile [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
pci [PATCH] x86_64: Remove bogus file in arch/x86_64/pci 2006-01-11 19:04:51 -08:00
defconfig [PATCH] x86_64: Update defconfig 2006-01-11 19:01:09 -08:00
Kconfig [PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_arch 2006-01-11 19:05:01 -08:00
Kconfig.debug [PATCH] x86/x86_64: mark rodata section read-only: x86-64 support 2006-01-06 08:33:36 -08:00
Makefile [PATCH] x86_64: Allow compilation on a 32bit biarch toolchain 2006-01-11 19:04:52 -08:00