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...copy will have to be done in dedicated vdev memory before adding it to vring. Specific rproc case was added to avoid copy and directly using shared memory for buffer allocation. Regards, Loic > > diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c > index 2108551..6c6767c 100644 > --- a/drivers/char/virtio_console.c > +++ b/drivers/char/virtio_console.c > @@ -40,7 +40,8 @@ > #include <linux/dma-mapping.h> > #include "../tty/hvc/hvc_console.h" > > -#define is_rproc_enabled IS_ENABLED(CONFIG_REMOTEPROC) > +//#define is_rproc_...

....kernel.org/majordomo-info.html So on top of your patches, can we just force use of DMA API and drop special casting? E.g. maybe something like the below - completely untested - patch? Does it work for you? diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 2108551..6c6767c 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -40,7 +40,8 @@ #include <linux/dma-mapping.h> #include "../tty/hvc/hvc_console.h" -#define is_rproc_enabled IS_ENABLED(CONFIG_REMOTEPROC) +//#define is_rproc_enabled IS_ENABLED(CONFIG_REMOTEPROC) +...

> -----Original Message----- > From: linux-remoteproc-owner at vger.kernel.org [mailto:linux-remoteproc- > owner at vger.kernel.org] On Behalf Of Anup Patel > Sent: Sunday, April 22, 2018 6:08 AM > To: Michael S. Tsirkin <mst at redhat.com> > Cc: linux-remoteproc at vger.kernel.org; Ohad Ben-Cohen > <ohad at wizery.com>; Bjorn Andersson <bjorn.andersson at

> -----Original Message----- > From: linux-remoteproc-owner at vger.kernel.org [mailto:linux-remoteproc- > owner at vger.kernel.org] On Behalf Of Anup Patel > Sent: Sunday, April 22, 2018 6:08 AM > To: Michael S. Tsirkin <mst at redhat.com> > Cc: linux-remoteproc at vger.kernel.org; Ohad Ben-Cohen > <ohad at wizery.com>; Bjorn Andersson <bjorn.andersson at