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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-06-02 21:08:48 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-06 16:44:35 +0200 |
| commit | 98df74652bfa95856f3ad8cf7b220b01e4a39aaf (patch) | |
| tree | 2f3d180e893ed1ff4e27a1662fb9f6c1a45c1fe7 | |
| parent | 51cbb3b34c8972e0096ed8d5cd4abfa586567852 (diff) | |
powerpc/powernv: Support firmware disable of RFI flush
commit eb0a2d2620ae431c543963c8c7f08f597366fc60 upstream.
Some versions of firmware will have a setting that can be configured
to disable the RFI flush, add support for it.
Fixes: 6e032b350cd1 ("powerpc/powernv: Check device-tree for RFI flush settings")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/powerpc/platforms/powernv/setup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 6f8b4c19373a..4764bc91570c 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -79,6 +79,10 @@ static void pnv_setup_rfi_flush(void) if (np && of_property_read_bool(np, "disabled")) enable--; + np = of_get_child_by_name(fw_features, "speculation-policy-favor-security"); + if (np && of_property_read_bool(np, "disabled")) + enable = 0; + of_node_put(np); of_node_put(fw_features); } |