On Sun, Sep 4, 2016 at 7:38 AM, Namhyung Kim <namhy...@kernel.org> wrote: > The virtio pstore driver provides interface to the pstore subsystem so > that the guest kernel's log/dump message can be saved on the host > machine. Users can access the log file directly on the host, or on the > guest at the next boot using pstore filesystem. It currently deals with > kernel log (printk) buffer only, but we can extend it to have other > information (like ftrace dump) later. > > It supports legacy PCI device using a 16K buffer by default and it's > configurable. It uses two virtqueues - one for (sync) read and another > for (async) write. Since it cannot wait for write finished, it supports > up to 128 concurrent IO. > > Cc: Paolo Bonzini <pbonz...@redhat.com> > Cc: Radim Krčmář <rkrc...@redhat.com> > Cc: "Michael S. Tsirkin" <m...@redhat.com> > Cc: Anthony Liguori <aligu...@amazon.com> > Cc: Anton Vorontsov <an...@enomsg.org> > Cc: Colin Cross <ccr...@android.com> > Cc: Kees Cook <keesc...@chromium.org> > Cc: Tony Luck <tony.l...@intel.com> > Cc: Steven Rostedt <rost...@goodmis.org> > Cc: Ingo Molnar <mi...@kernel.org> > Cc: Minchan Kim <minc...@kernel.org> > Cc: Will Deacon <will.dea...@arm.com> > Cc: virtio-...@lists.oasis-open.org > Cc: k...@vger.kernel.org > Cc: qemu-devel@nongnu.org > Cc: virtualizat...@lists.linux-foundation.org > Signed-off-by: Namhyung Kim <namhy...@kernel.org>
While I can't speak to the virtio parts, the interface into pstore looks fine to me. :) Reviewed-by: Kees Cook <keesc...@chromium.org> -Kees -- Kees Cook Nexus Security
