xtensa: make fast_unaligned store restartable

Browse source

fast_unaligned may encounter DTLB miss or SEGFAULT during the store
emulation. Don't update epc1 and lcount until after the store emulation
is complete, so that the faulting store instruction could be replayed.
Remove duplicate code handling zero overhead loops and calculate new
epc1 and lcount in one place.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

...

This commit is contained in:

Max Filippov 2014-08-03 00:42:38 +04:00

parent c3ef1f4d37

commit e9500dd852

1 changed files with 19 additions and 32 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

arch/xtensa/kernel/align.S

View file