diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 9 | ||||
| -rw-r--r-- | Documentation/admin-guide/perf/arm-cmn.rst | 2 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/arm/pmu.yaml | 1 | ||||
| -rw-r--r-- | Documentation/virt/kvm/arm/hyp-abi.rst | 9 |
4 files changed, 20 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 46c60ccb650d..07f9372b494a 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -373,6 +373,12 @@ arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards Format: <io>,<irq>,<nodeID> + arm64.nobti [ARM64] Unconditionally disable Branch Target + Identification support + + arm64.nopauth [ARM64] Unconditionally disable Pointer Authentication + support + ataflop= [HW,M68k] atarimouse= [HW,MOUSE] Atari Mouse @@ -2252,6 +2258,9 @@ kvm-arm.mode= [KVM,ARM] Select one of KVM/arm64's modes of operation. + nvhe: Standard nVHE-based mode, without support for + protected guests. + protected: nVHE-based mode with support for guests whose state is kept private from the host. Not valid if the kernel is running in EL2. diff --git a/Documentation/admin-guide/perf/arm-cmn.rst b/Documentation/admin-guide/perf/arm-cmn.rst index 0e4809346014..796e25b7027b 100644 --- a/Documentation/admin-guide/perf/arm-cmn.rst +++ b/Documentation/admin-guide/perf/arm-cmn.rst @@ -17,7 +17,7 @@ PMU events ---------- The PMU driver registers a single PMU device for the whole interconnect, -see /sys/bus/event_source/devices/arm_cmn. Multi-chip systems may link +see /sys/bus/event_source/devices/arm_cmn_0. Multi-chip systems may link more than one CMN together via external CCIX links - in this situation, each mesh counts its own events entirely independently, and additional PMU devices will be named arm_cmn_{1..n}. diff --git a/Documentation/devicetree/bindings/arm/pmu.yaml b/Documentation/devicetree/bindings/arm/pmu.yaml index 693ef3f185a8..e17ac049e890 100644 --- a/Documentation/devicetree/bindings/arm/pmu.yaml +++ b/Documentation/devicetree/bindings/arm/pmu.yaml @@ -43,6 +43,7 @@ properties: - arm,cortex-a75-pmu - arm,cortex-a76-pmu - arm,cortex-a77-pmu + - arm,cortex-a78-pmu - arm,neoverse-e1-pmu - arm,neoverse-n1-pmu - brcm,vulcan-pmu diff --git a/Documentation/virt/kvm/arm/hyp-abi.rst b/Documentation/virt/kvm/arm/hyp-abi.rst index 83cadd8186fa..4d43fbc25195 100644 --- a/Documentation/virt/kvm/arm/hyp-abi.rst +++ b/Documentation/virt/kvm/arm/hyp-abi.rst @@ -58,6 +58,15 @@ these functions (see arch/arm{,64}/include/asm/virt.h): into place (arm64 only), and jump to the restart address while at HYP/EL2. This hypercall is not expected to return to its caller. +* :: + + x0 = HVC_VHE_RESTART (arm64 only) + + Attempt to upgrade the kernel's exception level from EL1 to EL2 by enabling + the VHE mode. This is conditioned by the CPU supporting VHE, the EL2 MMU + being off, and VHE not being disabled by any other means (command line + option, for example). + Any other value of r0/x0 triggers a hypervisor-specific handling, which is not documented here. |