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author | Michael Ellerman <mpe@ellerman.id.au> | 2018-06-02 14:08:47 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-06 17:44:35 +0300 |
commit | 51cbb3b34c8972e0096ed8d5cd4abfa586567852 (patch) | |
tree | e43a4623920d1ac2a65a17882e6a388ed687219a /arch/powerpc | |
parent | 70e51fd51f00744dc9b7f017019da5d65bc32997 (diff) | |
download | linux-51cbb3b34c8972e0096ed8d5cd4abfa586567852.tar.xz |
powerpc/pseries: Support firmware disable of RFI flush
commit 582605a429e20ae68fd0b041b2e840af296edd08 upstream.
Some versions of firmware will have a setting that can be configured
to disable the RFI flush, add support for it.
Fixes: 8989d56878a7 ("powerpc/pseries: Query hypervisor for RFI flush settings")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 1845fc611912..0982e13b2942 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -473,7 +473,8 @@ static void pseries_setup_rfi_flush(void) if (types == L1D_FLUSH_NONE) types = L1D_FLUSH_FALLBACK; - if (!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) + if ((!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) || + (!(result.behaviour & H_CPU_BEHAV_FAVOUR_SECURITY))) enable = false; } else { /* Default to fallback if case hcall is not available */ |