arm64: Add workaround for Cavium Thunder erratum 30115

[mirror_ubuntu-zesty-kernel.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 969ef880d234e3b340713948eb2e9aec8ba0b3a3..c2f43f62a9fc4e534b0162133b7a5cf8b3485c57 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -2,6 +2,7 @@ config ARM64
        def_bool y
        select ACPI_CCA_REQUIRED if ACPI
        select ACPI_GENERIC_GSI if ACPI
+       select ACPI_GTDT if ACPI
        select ACPI_REDUCED_HARDWARE_ONLY if ACPI
        select ACPI_MCFG if ACPI
        select ACPI_SPCR_TABLE if ACPI
@@ -14,7 +15,9 @@ config ARM64
        select ARCH_HAS_KCOV
        select ARCH_HAS_SG_CHAIN
        select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+       select ARCH_HAVE_NMI_SAFE_CMPXCHG if ACPI_APEI_SEA
        select ARCH_USE_CMPXCHG_LOCKREF
+       select ARCH_SUPPORTS_MEMORY_FAILURE
        select ARCH_SUPPORTS_ATOMIC_RMW
        select ARCH_SUPPORTS_NUMA_BALANCING
        select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
@@ -52,6 +55,7 @@ config ARM64
        select GENERIC_TIME_VSYSCALL
        select HANDLE_DOMAIN_IRQ
        select HARDIRQS_SW_RESEND
+       select HAVE_ACPI_APEI if (ACPI && EFI)
        select HAVE_ALIGNED_STRUCT_PAGE if SLUB
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_BITREVERSE
@@ -87,6 +91,7 @@ config ARM64
        select HAVE_IRQ_TIME_ACCOUNTING
        select HAVE_MEMBLOCK
        select HAVE_MEMBLOCK_NODE_MAP if NUMA
+       select HAVE_NMI if ACPI_APEI_SEA
        select HAVE_PATA_PLATFORM
        select HAVE_PERF_EVENTS
        select HAVE_PERF_REGS
@@ -109,6 +114,7 @@ config ARM64
        select POWER_SUPPLY
        select SPARSE_IRQ
        select SYSCTL_EXCEPTION_TRACE
+       select THREAD_INFO_IN_TASK
        help
          ARM 64-bit (AArch64) Linux support.
 
@@ -238,6 +244,12 @@ config PGTABLE_LEVELS
        default 3 if ARM64_16K_PAGES && ARM64_VA_BITS_47
        default 4 if !ARM64_64K_PAGES && ARM64_VA_BITS_48
 
+config ARCH_SUPPORTS_UPROBES
+       def_bool y
+
+config ARCH_PROC_KCORE_TEXT
+       def_bool y
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
@@ -474,6 +486,55 @@ config CAVIUM_ERRATUM_27456
 
          If unsure, say Y.
 
+config CAVIUM_ERRATUM_30115
+       bool "Cavium erratum 30115: Guest may disable interrupts in host"
+       default y
+       help
+         On ThunderX T88 pass 1.x through 2.2, T81 pass 1.0 through
+         1.2, and T83 Pass 1.0, KVM guest execution may disable
+         interrupts in host. Trapping both GICv3 group-0 and group-1
+         accesses sidesteps the issue.
+
+         If unsure, say Y.
+
+config QCOM_FALKOR_ERRATUM_1003
+       bool "Falkor E1003: Incorrect translation due to ASID change"
+       default y
+       select ARM64_PAN if ARM64_SW_TTBR0_PAN
+       help
+         On Falkor v1, an incorrect ASID may be cached in the TLB when ASID
+         and BADDR are changed together in TTBRx_EL1. The workaround for this
+         issue is to use a reserved ASID in cpu_do_switch_mm() before
+         switching to the new ASID. Saying Y here selects ARM64_PAN if
+         ARM64_SW_TTBR0_PAN is selected. This is done because implementing and
+         maintaining the E1003 workaround in the software PAN emulation code
+         would be an unnecessary complication. The affected Falkor v1 CPU
+         implements ARMv8.1 hardware PAN support and using hardware PAN
+         support versus software PAN emulation is mutually exclusive at
+         runtime.
+
+         If unsure, say Y.
+
+config QCOM_FALKOR_ERRATUM_1009
+       bool "Falkor E1009: Prematurely complete a DSB after a TLBI"
+       default y
+       help
+         On Falkor v1, the CPU may prematurely complete a DSB following a
+         TLBI xxIS invalidate maintenance operation. Repeat the TLBI operation
+         one more time to fix the issue.
+
+         If unsure, say Y.
+
+config QCOM_QDF2400_ERRATUM_0065
+       bool "QDF2400 E0065: Incorrect GITS_TYPER.ITT_Entry_size"
+       default y
+       help
+         On Qualcomm Datacenter Technologies QDF2400 SoC, ITS hardware reports
+         ITE size incorrectly. The GITS_TYPER.ITT_Entry_size field should have
+         been indicated as 16Bytes (0xf), not 8Bytes (0x7).
+
+         If unsure, say Y.
+
 endmenu
 
 
@@ -688,6 +749,17 @@ config KEXEC
          but it is independent of the system firmware.   And like a reboot
          you can start any kernel with it, not just Linux.
 
+config CRASH_DUMP
+       bool "Build kdump crash kernel"
+       help
+         Generate crash dump after being started by kexec. This should
+         be normally only set in special crash dump kernels which are
+         loaded in the main kernel with kexec-tools into a specially
+         reserved region and then later executed after a crash by
+         kdump/kexec.
+
+         For more details see Documentation/kdump/kdump.txt
+
 config XEN_DOM0
        def_bool y
        depends on XEN
@@ -703,6 +775,7 @@ config XEN
 config FORCE_MAX_ZONEORDER
        int
        default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
+       default "13" if (ARCH_THUNDER && ARM64_4K_PAGES)
        default "12" if (ARM64_16K_PAGES && TRANSPARENT_HUGEPAGE)
        default "11"
        help
@@ -790,6 +863,14 @@ config SETEND_EMULATION
          If unsure, say Y
 endif
 
+config ARM64_SW_TTBR0_PAN
+       bool "Emulate Privileged Access Never using TTBR0_EL1 switching"
+       help
+         Enabling this option prevents the kernel from accessing
+         user-space memory directly by pointing TTBR0_EL1 to a reserved
+         zeroed area and reserved ASID. The user access routines
+         restore the valid TTBR0_EL1 temporarily.
+
 menu "ARMv8.1 architectural features"
 
 config ARM64_HW_AFDBM
@@ -1048,6 +1129,8 @@ source "net/Kconfig"
 
 source "drivers/Kconfig"
 
+source "ubuntu/Kconfig"
+
 source "drivers/firmware/Kconfig"
 
 source "drivers/acpi/Kconfig"