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SubjectRe: [PATCH] x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup
On Sat, Jun 06, 2020 at 05:08:38AM +0800, kernel test robot wrote:
arch/x86/kernel/cpu/centaur.c: In function 'init_centaur':
> >> arch/x86/kernel/cpu/centaur.c:219:2: error: implicit declaration of function 'init_ia32_feat_ctl' [-Werror=implicit-function-declaration]
> 219 | init_ia32_feat_ctl(c);
> | ^~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
> --
> arch/x86/kernel/cpu/zhaoxin.c: In function 'init_zhaoxin':
> >> arch/x86/kernel/cpu/zhaoxin.c:110:2: error: implicit declaration of function 'init_ia32_feat_ctl' [-Werror=implicit-function-declaration]
> 110 | init_ia32_feat_ctl(c);
> | ^~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors

Blech, zhaoxin.c an centaur.c don't include asm/cpu.h, and I (obviously)
don't have them enabled in my configs. I'll wait a day or two more before
sending v2.

diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c
index 426792565d86..c5cf336e5077 100644
--- a/arch/x86/kernel/cpu/centaur.c
+++ b/arch/x86/kernel/cpu/centaur.c
@@ -3,6 +3,7 @@
#include <linux/sched.h>
#include <linux/sched/clock.h>

+#include <asm/cpu.h>
#include <asm/cpufeature.h>
#include <asm/e820/api.h>
#include <asm/mtrr.h>
diff --git a/arch/x86/kernel/cpu/zhaoxin.c b/arch/x86/kernel/cpu/zhaoxin.c
index df1358ba622b..05fa4ef63490 100644
--- a/arch/x86/kernel/cpu/zhaoxin.c
+++ b/arch/x86/kernel/cpu/zhaoxin.c
@@ -2,6 +2,7 @@
#include <linux/sched.h>
#include <linux/sched/clock.h>

+#include <asm/cpu.h>
#include <asm/cpufeature.h>

#include "cpu.h"
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