Messages in this thread | | | Date | Tue, 10 Aug 2021 13:55:00 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH 3/7] vfio/pci: Use vfio_device_unmap_mapping_range() |
| |
On Tue, Aug 10, 2021 at 08:57:22AM -0300, Jason Gunthorpe wrote: > I'm not sure there is a real performance win to chase here? Doesn't > this only protect mmap against reset? The mmap isn't performance > sensitive, right? > > If this really needs extra optimization adding a rwsem to the devset > and using that across the whole set would surely be sufficient.
Every mmio read or write takes memory_lock.
| |