From 600b2fc242992e552e0b4e24c8c1f084b341f39b Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@xensource.com>
Date: Tue, 17 Jul 2007 18:37:07 -0700
Subject: [PATCH] xen: suppress abs symbol warnings for unused reloc pointers
arch/i386/xen/xen-asm.S defines some small pieces of code which are
used to implement a few paravirt_ops. They're designed so they can be
used either in-place, or be inline patched into their callsites if
there's enough space.
Some of those operations need to make calls out (specifically, if you
re-enable events [interrupts], and there's a pending event at that
time). These calls need the call instruction to be relocated if the
code is patched inline. In this case xen_foo_reloc is a
section-relative symbol which points to xen_foo's required relocation.
Other operations have no need of a relocation, and so their
corresponding xen_bar_reloc is absolute 0. These are the cases which
are triggering the warning.
This patch adds those symbols to the list of safe abs symbols.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Adrian Bunk <bunk@stusta.de>
---
arch/i386/boot/compressed/relocs.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/i386/boot/compressed/relocs.c b/arch/i386/boot/compressed/relocs.c
index ce4fda261aa..b0e21c3cee5 100644
--- a/arch/i386/boot/compressed/relocs.c
+++ b/arch/i386/boot/compressed/relocs.c
@@ -31,6 +31,8 @@ static const char* safe_abs_relocs[] = {
"__kernel_rt_sigreturn",
"__kernel_sigreturn",
"SYSENTER_RETURN",
+ "xen_irq_disable_direct_reloc",
+ "xen_save_fl_direct_reloc",
};
static int is_safe_abs_reloc(const char* sym_name)
--
2.20.1