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Re: [Xen-devel] 2.6.30 dom0 Xen patches

To: Andrew Lyon <andrew.lyon@xxxxxxxxx>, Kris Shannon <kris@xxxxxxxxxxxxx>

From: Boris Derzhavets <bderzhavets@xxxxxxxxx>

Date: Fri, 17 Jul 2009 00:11:18 -0700 (PDT)

Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Fri, 17 Jul 2009 00:12:01 -0700

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List-id: Xen developer discussion <xen-devel.lists.xensource.com>

I made two replacements
CONFIG_SPARSE_IRQ by CONFIG_GENERIC_HARDIRQS.

****************************************************
In 60035_xen3-patch-2.6.29.patch1 line 11568
****************************************************
+#ifdef CONFIG_SPARSE_IRQ
+ irq_to_desc(irq)->kstat_irqs[cpu] = 0;
+#else
kstat_cpu(cpu).irqs[irq] = 0;
****************************************************
In 60036_xen3-patch-2.6.30.patch1 line 18283
****************************************************
+#ifdef CONFIG_SPARSE_IRQ
+int __init arch_probe_nr_irqs(void)
+{
+ int nr;
+
+ if (nr_irqs > (NR_VECTORS * nr_cpu_ids))
+ nr_irqs = NR_VECTORS * nr_cpu_ids;

To fix this issue. But, i don't know how to rebuild Andy's patch set
based on your commit.

Boris.
P.S. I haven't heard from Andy for a while.

--- On Thu, 7/16/09, Kris Shannon <kris@xxxxxxxxxxxxx> wrote:

From: Kris Shannon <kris@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] 2.6.30 dom0 Xen patches
To: "Andrew Lyon" <andrew.lyon@xxxxxxxxx>
Cc: "Xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Date: Thursday, July 16, 2009, 6:56 PM

2009/7/2 Andrew Lyon <andrew.lyon@xxxxxxxxx>:
> I have rebased the xen-patches from opensuse
> kernel-source-2.6.30-50.1.src.rpm so that they can be applied to
> vanilla 2.6.30, the usual patches tarball and gentoo ebuild are
> available at http://code.google.com/p/gentoo-xen-kernel/downloads/list
> , if you are not using Gentoo simply apply the patches in numeric
> order.
>
> Some notes:
>
> both dom0 and domU require CONFIG_SPARSE_IRQ=y and CONFIG_HOTPLUG=y
> 64 bit dom0/domU requires CONFIG_IA32_EMULATION=y
>
> Andy

The error:
drivers/xen/core/evtchn.c: In function 'unbind_from_irq':
drivers/xen/core/evtchn.c:641: error: 'struct kernel_stat' has no
member named 'irqs'

when CONFIG_SPARSE_IRQ is not set is due to a missing #ifdef change a couple
of lines earlier. The commit d52a61c04c6c0814ca270a088feedb126436598e altered
the kernel_stat.irqs dependency to CONFIG_GENERIC_HARDIRQS.

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