Re: [uml-devel] [PATCH 06/10] uml: run mconsole "sysrq" in processcontext

[Andrew Morton]

Jeff Dike <jdike@xxxxxxxxxxx> wrote:
>
> On Thu, Sep 22, 2005 at 09:20:20PM +0200, Blaisorblade wrote:
> > sysrq t is broken (and stays), 
> 
> There's a fix on the way for that.  This has nothing to do with interrupt
> context anyway.
> 
> > but additionally there are some warnings from 
> > some commands (enable sleep inside spinlock checking and spinlock debugging), 
> > which go to the down_read inside handle_page_fault IIRC. So try to run in 
> > process context.
> 
> Which ones?  They should be fixed.
> 
> It is fairly fundamental to sysrq that it work from interrupt context.  You
> may be diagnosing a system which can't context switch any more.
> 
> This patch should be dropped, and the real problems fixed.
> 

Well Linus has just merged this patch.  If you hadn't removed me from the
cc yesterday this would not have happened.

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