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Subject[PATCH] Modpost section mismatch fix
[Sorry if duplicate, one earlier was corrupt]

I got section mismatches reported by modpost in latest build. It got
reported for xen_register_pirq and xen_unplug_emulated_devices
functions. xen_register_pirq makes reference to
acpi_sci_override_gsi in section; marking
xen_register_pirq with __init is not feasible since calls are made
to it from acpi_register_gsi in non-init contexts. So marking it
__refdata based on assumption that when acpi_sci_override_gsi is
referenced, it is in early stages where it is alive.

Raghavendra Prabhu
GPG Id : 0xD72BE977
Fingerprint: B93F EBCB 8E05 7039 CD3C A4B8 A616 DCA1 D72B E977
From 7dfd47575fd695fe8ddba951515cfac01a2ab8bc Mon Sep 17 00:00:00 2001
Message-Id: <>
From: Raghavendra D Prabhu <>
Date: Sun, 3 Jul 2011 01:48:50 +0530
Subject: [PATCH] xen/pci: Fix modpost warnings regarding section mismatch

Marking xen_register_pirq with __refdata since it is referencing
acpi_sci_override_gsi, an __initdata variable. Removing __init from
check_platform_magic since it is called by xen_unplug_emulated_devices in
non-init contexts (It probably gets inlined because of
-finline-functions-called-once, removing __init is more to avoid mismatch being

Signed-off-by: Raghavendra D Prabhu <>
arch/x86/pci/xen.c | 2 +-
arch/x86/xen/platform-pci-unplug.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index fe00830..fb5eeb0 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -327,7 +327,7 @@ int __init pci_xen_hvm_init(void)

-static int xen_register_pirq(u32 gsi, int triggering)
+static __refdata int xen_register_pirq(u32 gsi, int triggering)
int rc, pirq, irq = -1;
struct physdev_map_pirq map_irq;
diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c
index 25c52f9..ffcf261 100644
--- a/arch/x86/xen/platform-pci-unplug.c
+++ b/arch/x86/xen/platform-pci-unplug.c
@@ -35,7 +35,7 @@ EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);
static int xen_emul_unplug;

-static int __init check_platform_magic(void)
+static int check_platform_magic(void)
short magic;
char protocol;
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