[MODERATED] [PATCH] NX build fixup

From: Tyler Hicks <[email protected]>
Subject: [PATCH] cpu/speculation: Uninline and export CPU mitigations helpers

A kernel module may need to check the value of the "mitigations=" kernel
command line parameter as part of its setup when the module needs
to perform software mitigations for a CPU flaw. Uninline and export the
helper functions surrounding the cpu_mitigations enum to allow for their
usage from a module.

Signed-off-by: Tyler Hicks <[email protected]>
---

Only compile tested, with both CONFIG_KVM=y and CONFIG_KVM=m. Paolo, if
this looks good to you and Pawan, please include it in NX v9.

 include/linux/cpu.h | 13 ++-----------
 kernel/cpu.c        | 14 ++++++++++++++
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 2a093434e975..f1965255526a 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -230,16 +230,7 @@ enum cpu_mitigations {
 
 extern enum cpu_mitigations cpu_mitigations;
 
-/* mitigations=off */
-static inline bool cpu_mitigations_off(void)
-{
-	return cpu_mitigations == CPU_MITIGATIONS_OFF;
-}
-
-/* mitigations=auto,nosmt */
-static inline bool cpu_mitigations_auto_nosmt(void)
-{
-	return cpu_mitigations == CPU_MITIGATIONS_AUTO_NOSMT;
-}
+extern bool cpu_mitigations_off(void);
+extern bool cpu_mitigations_auto_nosmt(void);
 
 #endif /* _LINUX_CPU_H_ */
diff --git a/kernel/cpu.c b/kernel/cpu.c
index fc28e17940e0..bb9f3e636363 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2390,3 +2390,17 @@ static int __init mitigations_parse_cmdline(char *arg)
 	return 0;
 }
 early_param("mitigations", mitigations_parse_cmdline);
+
+/* mitigations=off */
+bool cpu_mitigations_off(void)
+{
+	return cpu_mitigations == CPU_MITIGATIONS_OFF;
+}
+EXPORT_SYMBOL_GPL(cpu_mitigations_off);
+
+/* mitigations=auto,nosmt */
+bool cpu_mitigations_auto_nosmt(void)
+{
+	return cpu_mitigations == CPU_MITIGATIONS_AUTO_NOSMT;
+}
+EXPORT_SYMBOL_GPL(cpu_mitigations_auto_nosmt);
-- 
2.17.1