Commit-ID: 7d381b749a010ccd48d5649c843cac0d14d1c229
Gitweb: http://git.kernel.org/tip/7d381b749a010ccd48d5649c843cac0d14d1c229
Author: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
AuthorDate: Wed, 23 Sep 2015 12:02:57 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 29 Sep 2015 09:37:06 +0200
x86/hyperv: Fix the build in the CONFIG_KEXEC_CORE=y case
Recent changes in the Hyper-V driver:
b4370df2b1f5 ("Drivers: hv: vmbus: add special crash handler")
broke the build when CONFIG_KEXEC_CORE is not set:
arch/x86/built-in.o: In function `hv_machine_crash_shutdown':
arch/x86/kernel/cpu/mshyperv.c:112: undefined reference to `native_machine_crash_shutdown'
Decorate all kexec related code with #ifdef CONFIG_KEXEC_CORE.
Reported-by: Jim Davis <jim.epost@xxxxxxxxx>
Reported-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: devel@xxxxxxxxxxxxxxxxxxxxxx
Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1443002577-25370-1-git-send-email-vkuznets@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/cpu/mshyperv.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 381c8b9..20e242e 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -34,11 +34,10 @@
struct ms_hyperv_info ms_hyperv;
EXPORT_SYMBOL_GPL(ms_hyperv);
-static void (*hv_kexec_handler)(void);
-static void (*hv_crash_handler)(struct pt_regs *regs);
-
#if IS_ENABLED(CONFIG_HYPERV)
static void (*vmbus_handler)(void);
+static void (*hv_kexec_handler)(void);
+static void (*hv_crash_handler)(struct pt_regs *regs);
void hyperv_vector_handler(struct pt_regs *regs)
{
@@ -96,8 +95,8 @@ void hv_remove_crash_handler(void)
hv_crash_handler = NULL;
}
EXPORT_SYMBOL_GPL(hv_remove_crash_handler);
-#endif
+#ifdef CONFIG_KEXEC_CORE
static void hv_machine_shutdown(void)
{
if (kexec_in_progress && hv_kexec_handler)
@@ -111,7 +110,8 @@ static void hv_machine_crash_shutdown(struct pt_regs *regs)
hv_crash_handler(regs);
native_machine_crash_shutdown(regs);
}
-
+#endif /* CONFIG_KEXEC_CORE */
+#endif /* CONFIG_HYPERV */
static uint32_t __init ms_hyperv_platform(void)
{
@@ -186,8 +186,10 @@ static void __init ms_hyperv_init_platform(void)
no_timer_check = 1;
#endif
+#if IS_ENABLED(CONFIG_HYPERV) && defined(CONFIG_KEXEC_CORE)
machine_ops.shutdown = hv_machine_shutdown;
machine_ops.crash_shutdown = hv_machine_crash_shutdown;
+#endif
mark_tsc_unstable("running on Hyper-V");
}
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