On Fri, 2016-06-05 at 07:46:36 UTC, Ian Munsie wrote: > From: Ian Munsie <imun...@au1.ibm.com> > > cxl devices typically access memory using an MMU in much the same way as > the CPU, and each context includes a state register much like the MSR in > the CPU. Like the CPU, the state register includes a bit to enable > relocation, which we currently always enable. > > In some cases, it may be desirable to allow a device to access memory > using real addresses instead of effective addresses, so this adds a new > API, cxl_set_translation_mode, that can be used to disable relocation > on a given kernel context. This can allow for the creation of a special > privileged context that the device can use if it needs relocation > disabled, and can use regular contexts at times when it needs relocation > enabled. > > This interface is only available to users of the kernel API for obvious > reasons, and will never be supported in a virtualised environment. > > This will be used by the upcoming cxl support in the mlx5 driver. > > Signed-off-by: Ian Munsie <imun...@au1.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/9bc8ba0e5d59a84e582004e201 cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
