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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-05-26 07:27:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 08:51:51 +0300 |
| commit | bf434b31bad640ef4ec34e5f92c5dc95b9e4ed44 (patch) | |
| tree | a7d09643077d7555e12c7c8a808af7a46645d487 | |
| parent | dff1a7e6c3ae2b79cdc23503d732a2b8c19a0296 (diff) | |
| download | linux-bf434b31bad640ef4ec34e5f92c5dc95b9e4ed44.tar.xz | |
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 7966a314d93a..37a7f5ef00b7 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); } |