On Wed, 2016-13-07 at 21:17:09 UTC, Ian Munsie wrote: > From: Ian Munsie <imun...@au1.ibm.com> > > The Mellanox CX4 has a hardware limitation where only 4 bits of the > AFU interrupt number can be passed to the XSL when sending an interrupt, > limiting it to only 15 interrupts per context (AFU interrupt number 0 is > invalid). > > In order to overcome this, we will allocate additional contexts linked > to the default context as extra address space for the extra interrupts - > this will be implemented in the next patch. > > This patch adds the preliminary support to allow this, by way of adding > a linked list in the context structure that we use to keep track of the > contexts dedicated to interrupts, and an API to simultaneously iterate > over the related context structures, AFU interrupt numbers and hardware > interrupt numbers. The point of using a single API to iterate these is > to hide some of the details of the iteration from external code, and to > reduce the number of APIs that need to be exported via base.c to allow > built in code to call. > > Signed-off-by: Ian Munsie <imun...@au1.ibm.com> > Reviewed-by: Frederic Barrat <fbar...@linux.vnet.ibm.com> > Reviewed-by: Andrew Donnellan <andrew.donnel...@au1.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/cbce0917e2e47d4bf5aa3b5fd6 cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
