diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-05-26 14:27:32 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 07:51:51 +0200 |
| commit | 6af06dcdea08b1eace8088f6b39852d80a66312f (patch) | |
| tree | b0bd0d03905b77d91e25bf6c6551010a5a696e65 /arch/powerpc/platforms/pseries/setup.c | |
| parent | d744f8457f2f0cc8c019ccbcf1432ea96896cb8b (diff) | |
powerpc/rfi-flush: Always enable fallback flush on pseries
commit 84749a58b6e382f109abf1e734bc4dd43c2c25bb upstream.
This ensures the fallback flush area is always allocated on pseries,
so in case a LPAR is migrated from a patched to an unpatched system,
it is possible to enable the fallback flush in the target system.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/platforms/pseries/setup.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/setup.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 8bbbb4e753b5..2708ddab209b 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -468,26 +468,18 @@ static void pseries_setup_rfi_flush(void) /* Enable by default */ enable = true; + types = L1D_FLUSH_FALLBACK; rc = plpar_get_cpu_characteristics(&result); if (rc == H_SUCCESS) { - types = L1D_FLUSH_NONE; - if (result.character & H_CPU_CHAR_L1D_FLUSH_TRIG2) types |= L1D_FLUSH_MTTRIG; if (result.character & H_CPU_CHAR_L1D_FLUSH_ORI30) types |= L1D_FLUSH_ORI; - /* Use fallback if nothing set in hcall */ - if (types == L1D_FLUSH_NONE) - types = L1D_FLUSH_FALLBACK; - 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 */ - types = L1D_FLUSH_FALLBACK; } setup_rfi_flush(types, enable); |