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authorBernd Schmidt <bernds_cb1@t-online.de>2008-04-23 14:56:36 -0400
committerBryan Wu <cooloney@kernel.org>2008-04-23 14:56:36 -0400
commitd56daae9bec92ae4b0c115db787a0fcc4c17b381 (patch)
tree502be06afc9116fa993807a758a998c23fc8d14a /arch/ia64/Kconfig
parent697a9d65aa799940da1c9145944c6b9bd0f442c5 (diff)
[Blackfin] arch: fix bug - a crash on bootup with CONFIG_MPU on the BF548
The function flush_switched_dcplbs was clearing the CPLB entries covering the process permission bitmasks. This means that the sequence flush_switched_dcplbs (); set_mask_dcplbs(mm->context.page_rwx_mask); has a problem: if kernel code (such as an interrupt) causes a CPLB miss before set_mask_dcplbs completes, the CPLB handler function causes a double fault, with an instantaneous reboot. This bug fix is dedicated to Michael Hennerich, the only person in the world capable of providing working JTAG hardware. Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/ia64/Kconfig')
0 files changed, 0 insertions, 0 deletions