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| author |   Diana Craciun <diana.craciun@nxp.com> | 2018-07-28 09:06:33 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-08-08 00:32:18 +1000 |
| commit | 6453b532f2c8856a80381e6b9a1f5ea2f12294df (patch) | |
| tree | b177abeae6f62da7a7c561225addd064dc97e187 | |
| parent | powerpc/64: Disable the speculation barrier from the command line (diff) | |
| download | linux-dev-6453b532f2c8856a80381e6b9a1f5ea2f12294df.tar.xz linux-dev-6453b532f2c8856a80381e6b9a1f5ea2f12294df.zip | |
powerpc/64: Make stf barrier PPC_BOOK3S_64 specific.
NXP Book3E platforms are not vulnerable to speculative store
bypass, so make the mitigations PPC_BOOK3S_64 specific.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/kernel/security.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c index 79f9397998ed..8ee1ade845c6 100644 --- a/arch/powerpc/kernel/security.c +++ b/arch/powerpc/kernel/security.c @@ -176,6 +176,7 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c return s.len; } +#ifdef CONFIG_PPC_BOOK3S_64 /* * Store-forwarding barrier support. */ @@ -323,3 +324,4 @@ static __init int stf_barrier_debugfs_init(void) } device_initcall(stf_barrier_debugfs_init); #endif /* CONFIG_DEBUG_FS */ +#endif /* CONFIG_PPC_BOOK3S_64 */ |