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[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>
hifive-unleashed-5.1
Shaohua Li 2006-12-08 02:41:13 -08:00 committed by Linus Torvalds
parent c642f9e03b
commit 3b1bdf4e08
1 changed files with 1 additions and 1 deletions
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2
arch/i386/kernel/smpboot.c
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@ -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);