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authorMichael Ellerman <mpe@ellerman.id.au>2018-06-02 21:08:58 +1000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-06-06 16:44:36 +0200
commit6f81254e77e238d04215dfa0d952f6af5819cc1d (patch)
tree6294252956f89ada373cc672c720a78a47cf4a17 /arch
parentbdcfeadf97700af96107929a92ceaf04beb323f9 (diff)
powerpc/64s: Move cpu_show_meltdown()
commit 8ad33041563a10b34988800c682ada14b2612533 upstream. This landed in setup_64.c for no good reason other than we had nowhere else to put it. Now that we have a security-related file, that is a better place for it so move it. [mpe: Add extern for rfi_flush to fix bisection break] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/security_features.h1
-rw-r--r--arch/powerpc/kernel/security.c11
-rw-r--r--arch/powerpc/kernel/setup_64.c8
3 files changed, 12 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/security_features.h b/arch/powerpc/include/asm/security_features.h
index db00ad2c72c2..400a9050e035 100644
--- a/arch/powerpc/include/asm/security_features.h
+++ b/arch/powerpc/include/asm/security_features.h
@@ -10,6 +10,7 @@
extern unsigned long powerpc_security_features;
+extern bool rfi_flush;
static inline void security_ftr_set(unsigned long feature)
{
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 4ccba00d224c..564e7f182a16 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -5,6 +5,8 @@
// Copyright 2018, Michael Ellerman, IBM Corporation.
#include <linux/kernel.h>
+#include <linux/device.h>
+
#include <asm/security_features.h>
@@ -13,3 +15,12 @@ unsigned long powerpc_security_features __read_mostly = \
SEC_FTR_L1D_FLUSH_PR | \
SEC_FTR_BNDS_CHK_SPEC_BAR | \
SEC_FTR_FAVOUR_SECURITY;
+
+
+ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ if (rfi_flush)
+ return sprintf(buf, "Mitigation: RFI Flush\n");
+
+ return sprintf(buf, "Vulnerable\n");
+}
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index eaa6039edddc..eda7eefe4927 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -805,12 +805,4 @@ static __init int rfi_flush_debugfs_init(void)
}
device_initcall(rfi_flush_debugfs_init);
#endif
-
-ssize_t cpu_show_meltdown(struct device *dev, struct device_attribute *attr, char *buf)
-{
- if (rfi_flush)
- return sprintf(buf, "Mitigation: RFI Flush\n");
-
- return sprintf(buf, "Vulnerable\n");
-}
#endif /* CONFIG_PPC_BOOK3S_64 */