Messages in this thread | | | From | Ian Munsie <> | Subject | Re: [PATCH 7/7] CXL: Unmap MMIO regions when detaching a context | Date | Mon, 15 Dec 2014 14:32:18 +1100 |
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Excerpts from Ian Munsie's message of 2014-12-08 19:18:01 +1100: > From: Ian Munsie <imunsie@au1.ibm.com> > > If we need to force detach a context (e.g. due to EEH or simply force > unbinding the driver) we should prevent the userspace contexts from > being able to access the Problem State Area MMIO region further, which > they may have mapped with mmap(). > > This patch unmaps any mapped MMIO regions when detaching a userspace > context.
Might want to drop this one for now - Philippe found that it sometimes causes an issue when multiple contexts are using the afu. Seems that unmap_mapping_range() unmapped a bit more than I expected.
Cheers, -Ian
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