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authorShaohua Li <shaohua.li@intel.com>2006-12-08 02:41:13 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:29:09 -0800
commit3b1bdf4e08d6a8d4fae5a30224ed2c55bf1e43fc (patch)
treee1dc5845c234f13da786711a66383b6bd7b5b14f /arch
parentc642f9e03b3ca04fc806ba5d8d34cc821382e525 (diff)
downloadop-kernel-dev-3b1bdf4e08d6a8d4fae5a30224ed2c55bf1e43fc.zip
op-kernel-dev-3b1bdf4e08d6a8d4fae5a30224ed2c55bf1e43fc.tar.gz
[PATCH] CPU hotplug broken with 2GB VMSPLIT
In VMSPLIT mode, kernel PGD might have more entries than user space. Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/kernel/smpboot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 4bf0e3c..1e00b03 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -1118,7 +1118,7 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
/* init low mem mapping */
clone_pgd_range(swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
- KERNEL_PGD_PTRS);
+ min_t(unsigned long, KERNEL_PGD_PTRS, USER_PGD_PTRS));
flush_tlb_all();
schedule_work(&info.task);
wait_for_completion(&done);
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