Re: [PATCH 08 of 12] xen-console: add save/restore

From: Jeremy Fitzhardinge
Date: Mon Jun 02 2008 - 07:50:51 EST


Ingo Molnar wrote:
-tip testing found the following xen-console symbols trouble:

ERROR: "console_drivers" [drivers/video/xen-fbfront.ko] undefined!
ERROR: "get_phys_to_machine" [drivers/video/xen-fbfront.ko] undefined!
ERROR: "get_phys_to_machine" [drivers/net/xen-netfront.ko] undefined!
ERROR: "get_phys_to_machine" [drivers/input/xen-kbdfront.ko] undefined!

with:

http://redhat.com/~mingo/misc/config-Mon_Jun__2_12_26_38_CEST_2008.bad

get_phys_to_machine can indeed be exported but i'm less sure about the console_drivers export ... The temporary fix below resolves it for now.

Exporting "get_phys_to_machine" is definitely the right thing to do, though it might be an idea to put it in the xen_ namespace.

The console changes are Markus' territory. Markus?

Thanks,
J

Ingo

------------->
Subject: xen: build fixes
From: Ingo Molnar <mingo@xxxxxxx>
Date: Mon Jun 02 13:13:04 CEST 2008

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/xen/mmu.c | 1 +
kernel/printk.c | 2 ++
2 files changed, 3 insertions(+)

Index: linux/arch/x86/xen/mmu.c
===================================================================
--- linux.orig/arch/x86/xen/mmu.c
+++ linux/arch/x86/xen/mmu.c
@@ -136,6 +136,7 @@ unsigned long get_phys_to_machine(unsign
idx = p2m_index(pfn);
return p2m_top[topidx][idx];
}
+EXPORT_SYMBOL_GPL(get_phys_to_machine);
static void alloc_p2m(unsigned long **pp, unsigned long *mfnp)
{
Index: linux/kernel/printk.c
===================================================================
--- linux.orig/kernel/printk.c
+++ linux/kernel/printk.c
@@ -76,6 +76,8 @@ EXPORT_SYMBOL(oops_in_progress);
static DECLARE_MUTEX(console_sem);
static DECLARE_MUTEX(secondary_console_sem);
struct console *console_drivers;
+EXPORT_SYMBOL_GPL(console_drivers);
+
/*
* This is used for debugging the mess that is the VT code by
* keeping track if we have the console semaphore held. It's

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