On 20.07.2017 03:29, Michał Mirosław wrote: > Allow secure-only erratas to be used in multiarch kernel. > > Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx> > --- > arch/arm/Kconfig | 20 ++++++++++++++------ > 1 file changed, 14 insertions(+), 6 deletions(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index a208bfe367b5..a1eff866550b 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -696,6 +696,14 @@ config ARCH_MULTI_CPU_AUTO > > endmenu > > +config ARCH_ASSUME_SECURE_PLATFORM What about ARCH_SECURE_PLATFORM? > + bool "Enable ERRATAs using secure-only registers" > + default !ARCH_MULTIPLATFORM > + help > + Allow erratas that need access to secure-only registers. > + > + Beware: Resulting kernel won't boot on a CPU in non-Secure mode. > + > config ARCH_VIRT > bool "Dummy Virtual Machine" > depends on ARCH_MULTI_V7 > @@ -984,7 +992,7 @@ config ARM_ERRATA_430973 > config ARM_ERRATA_458693 > bool "ARM errata: Processor deadlock when a false hazard is created" > depends on CPU_V7 > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 458693 Cortex-A8 (r2p0) > erratum. For very specific sequences of memory operations, it is > @@ -998,7 +1006,7 @@ config ARM_ERRATA_458693 > config ARM_ERRATA_460075 > bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" > depends on CPU_V7 > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 460075 Cortex-A8 (r2p0) > erratum. Any asynchronous access to the L2 cache may encounter a > @@ -1011,7 +1019,7 @@ config ARM_ERRATA_460075 > config ARM_ERRATA_742230 > bool "ARM errata: DMB operation may be faulty" > depends on CPU_V7 && SMP > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 742230 Cortex-A9 > (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction > @@ -1024,7 +1032,7 @@ config ARM_ERRATA_742230 > config ARM_ERRATA_742231 > bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption" > depends on CPU_V7 && SMP > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 742231 Cortex-A9 > (r2p0..r2p2) erratum. Under certain conditions, specific to the > @@ -1062,7 +1070,7 @@ config ARM_ERRATA_720789 > config ARM_ERRATA_743622 > bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" > depends on CPU_V7 > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 743622 Cortex-A9 > (r2p*) erratum. Under very rare conditions, a faulty > @@ -1076,7 +1084,7 @@ config ARM_ERRATA_743622 > config ARM_ERRATA_751472 > bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation" > depends on CPU_V7 > - depends on !ARCH_MULTIPLATFORM > + depends on ARCH_ASSUME_SECURE_PLATFORM > help > This option enables the workaround for the 751472 Cortex-A9 (prior > to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the > -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
