In that case, it doesn't compile.
arch/x86/xen/apic.c:204:13: error: redefinition of ‘xen_init_apic’
void __init xen_init_apic(void)
^
In file included from arch/x86/xen/apic.c:9:0:
arch/x86/xen/xen-ops.h:110:27: note: previous definition of
‘xen_init_apic’ was here
static inline vo
On 06/08/15 16:58, Jason A. Donenfeld wrote:
> On Thu, Aug 6, 2015 at 12:02 PM, David Vrabel wrote:
>> Linux PV guests must use the "Xen PV" APIC driver. You need to
>> investigate why your PV guest is not using this (although I'm surprised
>> it works at all with the wrong one).
>
> Actually it
On Thu, Aug 6, 2015 at 12:02 PM, David Vrabel wrote:
> Linux PV guests must use the "Xen PV" APIC driver. You need to
> investigate why your PV guest is not using this (although I'm surprised
> it works at all with the wrong one).
Actually it appears this PV Guest is using the "flat" APIC driver
On 05/08/15 00:01, Jason A. Donenfeld wrote:
> Hey David,
>
> Sorry for the premature response on my phone earlier. Real reply follows.
>>> rcu_read_lock, when using Xen PV. Relevant excerpts of the
>> ^^ PV guest?
>
> Yes. The lockup occurs on a PV guest. Nothing
On Tue, 2015-08-04 at 18:12 +0100, David Vrabel wrote:
> On 04/08/15 17:41, Jason A. Donenfeld wrote:
> > Hi folks,
> >
> > Paul McKenney and I had an offline discussion about some rcu questions
> > that eventually lead into me investigating a strange full lock-up I'm
> > experiencing as a consequ
Hi folks,
I have written an extremely simple reproducer. Xen 4.5.1. Linux 4.1.3.
Config attached. Reproducer attached. Makefile attached.
It results in the COMPLETE lockup of the system when it receives a
network packet over the Xen PV network interface.
The lockup is 100% reliable. As in the me
Hey David,
Sorry for the premature response on my phone earlier. Real reply follows.
>> rcu_read_lock, when using Xen PV. Relevant excerpts of the
> ^^ PV guest?
Yes. The lockup occurs on a PV guest. Nothing special at all about the
configuration. Vanilla upstream
On 04/08/15 17:41, Jason A. Donenfeld wrote:
> Hi folks,
>
> Paul McKenney and I had an offline discussion about some rcu questions
> that eventually lead into me investigating a strange full lock-up I'm
> experiencing as a consequence of a printk in softirq inside of an
> rcu_read_lock, when usin
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