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authorAndi Kleen <ak@linux.intel.com>2013-10-22 09:07:56 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2014-01-29 22:17:17 -0800
commita2e7f0e3a4f0f23fe4cd8cc22da547872f0170bb (patch)
treec13215deb885bace1fbfe9d084d8d5781e8f7c62 /arch/x86/kernel/vsmp_64.c
parent824a2870098fa5364d49d4cd5a1f41544d9f6c65 (diff)
downloadlinux-a2e7f0e3a4f0f23fe4cd8cc22da547872f0170bb.tar.gz
x86, asmlinkage, paravirt: Make paravirt thunks global
The paravirt thunks use a hack of using a static reference to a static function to reference that function from the top level statement. This assumes that gcc always generates static function names in a specific format, which is not necessarily true. Simply make these functions global and asmlinkage or __visible. This way the static __used variables are not needed and everything works. Functions with arguments are __visible to keep the register calling convention on 32bit. Changed in paravirt and in all users (Xen and vsmp) v2: Use __visible for functions with arguments Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Ido Yariv <ido@wizery.com> Signed-off-by: Andi Kleen <ak@linux.intel.com> Link: http://lkml.kernel.org/r/1382458079-24450-5-git-send-email-andi@firstfloor.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/vsmp_64.c')
-rw-r--r--arch/x86/kernel/vsmp_64.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index 992f890283e..f6584a90aba 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -33,7 +33,7 @@
* and vice versa.
*/
-static unsigned long vsmp_save_fl(void)
+asmlinkage unsigned long vsmp_save_fl(void)
{
unsigned long flags = native_save_fl();
@@ -43,7 +43,7 @@ static unsigned long vsmp_save_fl(void)
}
PV_CALLEE_SAVE_REGS_THUNK(vsmp_save_fl);
-static void vsmp_restore_fl(unsigned long flags)
+__visible void vsmp_restore_fl(unsigned long flags)
{
if (flags & X86_EFLAGS_IF)
flags &= ~X86_EFLAGS_AC;
@@ -53,7 +53,7 @@ static void vsmp_restore_fl(unsigned long flags)
}
PV_CALLEE_SAVE_REGS_THUNK(vsmp_restore_fl);
-static void vsmp_irq_disable(void)
+asmlinkage void vsmp_irq_disable(void)
{
unsigned long flags = native_save_fl();
@@ -61,7 +61,7 @@ static void vsmp_irq_disable(void)
}
PV_CALLEE_SAVE_REGS_THUNK(vsmp_irq_disable);
-static void vsmp_irq_enable(void)
+asmlinkage void vsmp_irq_enable(void)
{
unsigned long flags = native_save_fl();