Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1517879

Re: [PATCH v4 0/4] MIPS: Remote processor driver

Show all headers | View raw

On Wed, 2 Nov 2016, Matt Redfearn wrote:
> The MIPS remote processor driver allows non-Linux firmware to take
> control of and execute on one of the systems VPEs. The CPU must be
> offlined from Linux first. A sysfs interface is created which allows
> firmware to be loaded and changed at runtime. A full description is
> available at [1]. An example firmware that can be used with this driver
> is available at [2].
> 
> This is useful to allow running bare metal code, or an RTOS, on one or
> more CPUs while allowing Linux to continue running on those remaining.

And how is actually guaranteed that these two things are properly seperated
(memory, devices, interrupts etc.) ?

We have rejected attempts to do exactly the same thing on x86 in the
past. There is virtualization and NOHZ_FULL to do it proper and not just
with a horrible hackery.

Thanks,

	tglx

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH v4 0/4] MIPS: Remote processor driver Matt Redfearn <matt.redfearn@imgtec.com> - 2016-11-02 17:20 +0100
  [PATCH v4 2/4] MIPS: CPS: Add VP(E) stealing Matt Redfearn <matt.redfearn@imgtec.com> - 2016-11-02 17:20 +0100
  [PATCH v4 3/4] remoteproc/MIPS: Add a remoteproc driver for MIPS Matt Redfearn <matt.redfearn@imgtec.com> - 2016-11-02 17:20 +0100
  [PATCH v4 1/4] irqchip: mips-gic: Add context saving for MIPS_REMOTEPROC Matt Redfearn <matt.redfearn@imgtec.com> - 2016-11-02 17:20 +0100
  Re: [PATCH v4 0/4] MIPS: Remote processor driver Thomas Gleixner <tglx@linutronix.de> - 2016-11-09 11:20 +0100
    Re: [PATCH v4 0/4] MIPS: Remote processor driver Matt Redfearn <matt.redfearn@imgtec.com> - 2016-11-09 14:40 +0100
      Re: [PATCH v4 0/4] MIPS: Remote processor driver Thomas Gleixner <tglx@linutronix.de> - 2016-11-09 15:30 +0100

csiph-web