Groups > linux.kernel > #1451963

Re: [PATCH 6/7] qemu: Implement virtio-pstore device

From	Steven Rostedt <rostedt@goodmis.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 6/7] qemu: Implement virtio-pstore device
Date	2016-07-28 16:40 +0200
Message-ID	<rZUDD-7vd-3@gated-at.bofh.it> (permalink)
References	<rZyD7-12s-9@gated-at.bofh.it> <rZyMN-164-23@gated-at.bofh.it> <rZH3H-6Lq-3@gated-at.bofh.it> <rZMmK-1PT-9@gated-at.bofh.it>
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On Thu, 28 Jul 2016 14:39:53 +0900
Namhyung Kim <namhyung@kernel.org> wrote:

> Well, I dont' know.  As you know, the kernel oops dump is already sent
> to serial device but it's rather slow.  As I wrote in the cover
> letter, enabling ftrace_dump_on_oops makes it even worse..  Also
> pstore saves the (compressed) binary data so I thought it'd be better
> to have a dedicated IO channel.

BTW, I agree with this. It is better to have a quick way to grab the
ftrace buffers when a crash happens, as serial is excruciatingly slow.
Although, currently I still use kexec/kdump, but as Namhyung said, it
depends on crash being up to date. I tend to be sending in updates
every time I have to use it.

-- Steve

Thread

[RFC/PATCHSET 0/7] virtio: Implement virtio pstore device (v2) Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:10 +0200
  [PATCH 2/7] pstore/ram: Set pstore flags dynamically Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  [PATCH 4/7] virtio: Basic implementation of virtio pstore driver Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
    Re: [PATCH 6/7] qemu: Implement virtio-pstore device "Michael S. Tsirkin" <mst@redhat.com> - 2016-07-28 02:10 +0200
      Re: [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-07-28 07:50 +0200
        Re: [PATCH 6/7] qemu: Implement virtio-pstore device Stefan Hajnoczi <stefanha@gmail.com> - 2016-07-28 15:00 +0200
          Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device "Daniel P. Berrange" <berrange@redhat.com> - 2016-07-28 15:10 +0200
            Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-07-30 10:50 +0200
              Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device "Daniel P. Berrange" <berrange@redhat.com> - 2016-08-01 11:50 +0200
                Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-08-01 17:40 +0200
        Re: [PATCH 6/7] qemu: Implement virtio-pstore device Steven Rostedt <rostedt@goodmis.org> - 2016-07-28 16:40 +0200
    Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device "Daniel P. Berrange" <berrange@redhat.com> - 2016-07-28 15:30 +0200
      Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-07-30 11:00 +0200
        Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device "Daniel P. Berrange" <berrange@redhat.com> - 2016-08-01 11:30 +0200
          Re: [Qemu-devel] [PATCH 6/7] qemu: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-08-01 18:00 +0200
  [PATCH 3/7] pstore: Manage buffer position for async write Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  [PATCH 1/7] pstore: Split pstore fragile flags Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  [PATCH 5/7] virtio-pstore: Support PSTORE_TYPE_CONSOLE Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  [PATCH 7/7] kvmtool: Implement virtio-pstore device Namhyung Kim <namhyung@kernel.org> - 2016-07-27 17:20 +0200
  Re: [RFC/PATCHSET 0/7] virtio: Implement virtio pstore device (v2) "Michael S. Tsirkin" <mst@redhat.com> - 2016-07-28 00:20 +0200
    Re: [RFC/PATCHSET 0/7] virtio: Implement virtio pstore device (v2) Namhyung Kim <namhyung@kernel.org> - 2016-07-28 04:50 +0200

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