sparc64: Take ctx_alloc_lock properly in hugetlb_setup().

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[ Upstream commit 9ea46abe22 ]

On cheetahplus chips we take the ctx_alloc_lock in order to
modify the TLB lookup parameters for the indexed TLBs, which
are stored in the context register.

This is called with interrupts disabled, however ctx_alloc_lock
is an IRQ safe lock, therefore we must take acquire/release it
properly with spin_{lock,unlock}_irq().

Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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David S. Miller 2016-05-25 12:51:20 -07:00 • committed by Greg Kroah-Hartman

parent 87575e31be

commit 6bb3290ce9

1 changed files with 7 additions and 3 deletions

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arch/sparc/mm/init_64.c

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