Messages in this thread | | | Date | Wed, 10 May 2006 16:48:23 +0100 | From | Christian Limpach <> | Subject | Re: [Xen-devel] [RFC PATCH 01/35] Add XEN config options and disable unsupported config options. |
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On Wed, May 10, 2006 at 04:36:58PM +0100, Alan Cox wrote: > On Maw, 2006-05-09 at 00:00 -0700, Chris Wright wrote: > > plain text document atodiad (config-xen) > > The XEN config option is selected from the i386 subarch menu by > > choosing the X86_XEN "Xen-compatible" subarch. > > You need this as well. At least if I read the logic right with regards > to Xen and traps it is safe to do the following (although probably not > safe to run Xen on such a physical system anyway)
Yes. In our tree, we have a config option which completely removes all the hardware idt table code (X86_NO_IDT) and stores the trap table as a table suitable to pass directly to the hypervisor.
That's not so useful if you want to build a kernel which can run both on a hypervisor and on native. I guess you would need to disable the X86_F00F_BUG code at runtime in such a kernel.
For the non-runtime case, I wonder if it's preferable to disable X86_F00F_BUG like you suggest or if it would be better to disable the cpu types listed?
christian
> > Signed-off-by: Alan Cox <alan@redhat.com> > > --- arch/i386/Kconfig.cpu~ 2006-05-10 15:51:44.956941304 +0100 > +++ arch/i386/Kconfig.cpu 2006-05-10 15:51:44.956941304 +0100 > @@ -251,7 +251,7 @@ > > config X86_F00F_BUG > bool > - depends on M586MMX || M586TSC || M586 || M486 || M386 > + depends on ( M586MMX || M586TSC || M586 || M486 || M386 ) && !XEN > default y > > config X86_WP_WORKS_OK > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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