Re: [PATCH] arm64: xen: Implement EFI reset_system callback

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 19 Apr, at 09:29:06PM, Daniel Kiper wrote:
> On Tue, Apr 18, 2017 at 02:46:50PM +0100, Matt Fleming wrote:
> > On Thu, 06 Apr, at 04:55:11PM, Mark Rutland wrote:
> > >
> > > Please, let's keep the Xen knowledge constrained to the Xen EFI wrapper,
> > > rather than spreading it further.
> > >
> > > IMO, given reset_system is a *mandatory* function, the Xen wrapper
> > > should provide an implementation.
> > >
> > > I don't see why you can't implement a wrapper that calls the usual Xen
> > > poweroff/reset functions.
> >
> > I realise I'm making a sweeping generalisation, but adding
> > EFI_PARAVIRT is almost always the wrong thing to do.
> 
> Why?
 
Because it makes paravirt a special case, and there's usually very
little reason to make it special in the EFI code. Special-casing means
more branches, more code paths, a bigger testing matrix and more
complex code. 

EFI_PARAVIRT does have its uses, like for those scenarios where we
don't have a table of function pointers that can be overidden for
paravirt.

But we do have such a table for ->reset_system().
--
To unsubscribe from this list: send the line "unsubscribe linux-efi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux