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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-07-28 09:06:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-08-08 00:32:23 +1000 |
| commit | 179ab1cbf883575c3a585bcfc0f2160f1d22a149 (patch) | |
| tree | eead3ee74946fc0b174966ef4fcf1fa02ae8e2fc /arch/powerpc/Kconfig | |
| parent | 6453b532f2c8856a80381e6b9a1f5ea2f12294df (diff) | |
| download | lwn-179ab1cbf883575c3a585bcfc0f2160f1d22a149.tar.gz lwn-179ab1cbf883575c3a585bcfc0f2160f1d22a149.zip | |
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
Add a config symbol to encode which platforms support the
barrier_nospec speculation barrier. Currently this is just Book3S 64
but we will add Book3E in a future patch.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index ee38fce075ee..846c89ed7fa3 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -165,7 +165,7 @@ config PPC select GENERIC_CLOCKEVENTS_BROADCAST if SMP select GENERIC_CMOS_UPDATE select GENERIC_CPU_AUTOPROBE - select GENERIC_CPU_VULNERABILITIES if PPC_BOOK3S_64 + select GENERIC_CPU_VULNERABILITIES if PPC_BARRIER_NOSPEC select GENERIC_IRQ_SHOW select GENERIC_IRQ_SHOW_LEVEL select GENERIC_SMP_IDLE_THREAD @@ -242,6 +242,11 @@ config PPC # Please keep this list sorted alphabetically. # +config PPC_BARRIER_NOSPEC + bool + default y + depends on PPC_BOOK3S_64 + config GENERIC_CSUM def_bool n |