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authorSergey Fedorov <serge.fdrv@gmail.com>2016-07-15 20:58:44 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2016-09-13 19:08:42 +0200
commit118b07308a8cedc16ef63d7ab243a95f1701db40 (patch)
treeac1e17b27cab6c16018a3409a81d8e31c0472c18 /default-configs/cris-softmmu.mak
parent89a16b1e4294e3664667a151c2f70c84dfac6fd9 (diff)
tcg: Prepare safe access to tb_flushed out of tb_lock
Ensure atomicity and ordering of CPU's 'tb_flushed' access for future translation block lookup out of 'tb_lock'. This field can only be touched from another thread by tb_flush() in user mode emulation. So the only access to be sequential atomic is: * a single write in tb_flush(); * reads/writes out of 'tb_lock'. In future, before enabling MTTCG in system mode, tb_flush() must be safe and this field becomes unnecessary. Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20160715175852.30749-5-sergey.fedorov@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'default-configs/cris-softmmu.mak')
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