On Tue, 3 Nov 2015 12:54:39 +0100 Christian Borntraeger <borntrae...@de.ibm.com> wrote:
> As virtio-ccw now has dma ops, we can no longer default to the PCI ones. > Make use of dev_archdata to keep the dma_ops per device. The pci devices > now use that to override the default, and the default is changed to use > the noop ops for everything that is not PCI. To compile without PCI > support we also have to enable the DMA api with virtio. Not only with virtio, but generally, right? > Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com> > Reviewed-by: Joerg Roedel <jroe...@suse.de> > Acked-by: Sebastian Ott <seb...@linux.vnet.ibm.com> > --- > arch/s390/Kconfig | 3 ++- > arch/s390/include/asm/device.h | 6 +++++- > arch/s390/include/asm/dma-mapping.h | 6 ++++-- > arch/s390/pci/pci.c | 1 + > arch/s390/pci/pci_dma.c | 4 ++-- > 5 files changed, 14 insertions(+), 6 deletions(-) > > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig > index 1d57000..04f0e02 100644 > --- a/arch/s390/Kconfig > +++ b/arch/s390/Kconfig > @@ -113,6 +113,7 @@ config S390 > select GENERIC_FIND_FIRST_BIT > select GENERIC_SMP_IDLE_THREAD > select GENERIC_TIME_VSYSCALL > + select HAS_DMA > select HAVE_ALIGNED_STRUCT_PAGE if SLUB > select HAVE_ARCH_AUDITSYSCALL > select HAVE_ARCH_EARLY_PFN_TO_NID > @@ -124,6 +125,7 @@ config S390 > select HAVE_CMPXCHG_DOUBLE > select HAVE_CMPXCHG_LOCAL > select HAVE_DEBUG_KMEMLEAK > + select HAVE_DMA_ATTRS > select HAVE_DYNAMIC_FTRACE > select HAVE_DYNAMIC_FTRACE_WITH_REGS > select HAVE_FTRACE_MCOUNT_RECORD > @@ -580,7 +582,6 @@ config QDIO > > menuconfig PCI > bool "PCI support" > - select HAVE_DMA_ATTRS > select PCI_MSI > help > Enable PCI support. Hm. Further down in this file, there's config HAS_DMA def_bool PCI select HAVE_DMA_API_DEBUG Should we maybe select HAVE_DMA_API_DEBUG above, drop the HAS_DMA config option and rely on not defining NO_DMA instead? Otherwise, the patch looks good to me. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization