Merge tag 'riscv-for-linus-6.11-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:

 - Support for various new ISA extensions:
     * The Zve32[xf] and Zve64[xfd] sub-extensios of the vector
       extension
     * Zimop and Zcmop for may-be-operations
     * The Zca, Zcf, Zcd and Zcb sub-extensions of the C extension
     * Zawrs

 - riscv,cpu-intc is now dtschema

 - A handful of performance improvements and cleanups to text patching

 - Support for memory hot{,un}plug

 - The highest user-allocatable virtual address is now visible in
   hwprobe

* tag 'riscv-for-linus-6.11-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (58 commits)
  riscv: lib: relax assembly constraints in hweight
  riscv: set trap vector earlier
  KVM: riscv: selftests: Add Zawrs extension to get-reg-list test
  KVM: riscv: Support guest wrs.nto
  riscv: hwprobe: export Zawrs ISA extension
  riscv: Add Zawrs support for spinlocks
  dt-bindings: riscv: Add Zawrs ISA extension description
  riscv: Provide a definition for 'pause'
  riscv: hwprobe: export highest virtual userspace address
  riscv: Improve sbi_ecall() code generation by reordering arguments
  riscv: Add tracepoints for SBI calls and returns
  riscv: Optimize crc32 with Zbc extension
  riscv: Enable DAX VMEMMAP optimization
  riscv: mm: Add support for ZONE_DEVICE
  virtio-mem: Enable virtio-mem for RISC-V
  riscv: Enable memory hotplugging for RISC-V
  riscv: mm: Take memory hotplug read-lock during kernel page table dump
  riscv: mm: Add memory hotplugging support
  riscv: mm: Add pfn_to_kaddr() implementation
  riscv: mm: Refactor create_linear_mapping_range() for memory hot add
  ...

4 files changed, 206 insertions, 72 deletions

diff --git a/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.txt
deleted file mode 100644
index 265b223cd978..000000000000
--- a/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-RISC-V Hart-Level Interrupt Controller (HLIC)
----------------------------------------------
-
-RISC-V cores include Control Status Registers (CSRs) which are local to each
-CPU core (HART in RISC-V terminology) and can be read or written by software.
-Some of these CSRs are used to control local interrupts connected to the core.
-Every interrupt is ultimately routed through a hart's HLIC before it
-interrupts that hart.
-
-The RISC-V supervisor ISA manual specifies three interrupt sources that are
-attached to every HLIC: software interrupts, the timer interrupt, and external
-interrupts.  Software interrupts are used to send IPIs between cores.  The
-timer interrupt comes from an architecturally mandated real-time timer that is
-controlled via Supervisor Binary Interface (SBI) calls and CSR reads.  External
-interrupts connect all other device interrupts to the HLIC, which are routed
-via the platform-level interrupt controller (PLIC).
-
-All RISC-V systems that conform to the supervisor ISA specification are
-required to have a HLIC with these three interrupt sources present.  Since the
-interrupt map is defined by the ISA it's not listed in the HLIC's device tree
-entry, though external interrupt controllers (like the PLIC, for example) will
-need to define how their interrupts map to the relevant HLICs.  This means
-a PLIC interrupt property will typically list the HLICs for all present HARTs
-in the system.
-
-Required properties:
-- compatible : "riscv,cpu-intc"
-- #interrupt-cells : should be <1>.  The interrupt sources are defined by the
-  RISC-V supervisor ISA manual, with only the following three interrupts being
-  defined for supervisor mode:
-    - Source 1 is the supervisor software interrupt, which can be sent by an SBI
-      call and is reserved for use by software.
-    - Source 5 is the supervisor timer interrupt, which can be configured by
-      SBI calls and implements a one-shot timer.
-    - Source 9 is the supervisor external interrupt, which chains to all other
-      device interrupts.
-- interrupt-controller : Identifies the node as an interrupt controller
-
-Furthermore, this interrupt-controller MUST be embedded inside the cpu
-definition of the hart whose CSRs control these local interrupts.
-
-An example device tree entry for a HLIC is show below.
-
-	cpu1: cpu@1 {
-		compatible = "riscv";
-		...
-		cpu1-intc: interrupt-controller {
-			#interrupt-cells = <1>;
-			compatible = "sifive,fu540-c000-cpu-intc", "riscv,cpu-intc";
-			interrupt-controller;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.yaml
new file mode 100644
index 000000000000..83256cc0bd5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/riscv,cpu-intc.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/riscv,cpu-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RISC-V Hart-Level Interrupt Controller (HLIC)
+
+description:
+  RISC-V cores include Control Status Registers (CSRs) which are local to
+  each CPU core (HART in RISC-V terminology) and can be read or written by
+  software. Some of these CSRs are used to control local interrupts connected
+  to the core. Every interrupt is ultimately routed through a hart's HLIC
+  before it interrupts that hart.
+
+  The RISC-V supervisor ISA manual specifies three interrupt sources that are
+  attached to every HLIC namely software interrupts, the timer interrupt, and
+  external interrupts. Software interrupts are used to send IPIs between
+  cores.  The timer interrupt comes from an architecturally mandated real-
+  time timer that is controlled via Supervisor Binary Interface (SBI) calls
+  and CSR reads. External interrupts connect all other device interrupts to
+  the HLIC, which are routed via the platform-level interrupt controller
+  (PLIC).
+
+  All RISC-V systems that conform to the supervisor ISA specification are
+  required to have a HLIC with these three interrupt sources present.  Since
+  the interrupt map is defined by the ISA it's not listed in the HLIC's device
+  tree entry, though external interrupt controllers (like the PLIC, for
+  example) will need to define how their interrupts map to the relevant HLICs.
+  This means a PLIC interrupt property will typically list the HLICs for all
+  present HARTs in the system.
+
+maintainers:
+  - Palmer Dabbelt <palmer@dabbelt.com>
+  - Paul Walmsley <paul.walmsley@sifive.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: andestech,cpu-intc
+          - const: riscv,cpu-intc
+      - const: riscv,cpu-intc
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 1
+    description: |
+      The interrupt sources are defined by the RISC-V supervisor ISA manual,
+      with only the following three interrupts being defined for
+      supervisor mode:
+        - Source 1 is the supervisor software interrupt, which can be sent by
+          an SBI call and is reserved for use by software.
+        - Source 5 is the supervisor timer interrupt, which can be configured
+          by SBI calls and implements a one-shot timer.
+        - Source 9 is the supervisor external interrupt, which chains to all
+          other device interrupts.
+
+required:
+  - compatible
+  - '#interrupt-cells'
+  - interrupt-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    interrupt-controller {
+        #interrupt-cells = <1>;
+        compatible = "riscv,cpu-intc";
+        interrupt-controller;
+    };
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index d067f2a468ee..8edc8261241a 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -103,26 +103,7 @@ properties:
 
   interrupt-controller:
     type: object
-    additionalProperties: false
-    description: Describes the CPU's local interrupt controller
-
-    properties:
-      '#interrupt-cells':
-        const: 1
-
-      compatible:
-        oneOf:
-          - items:
-              - const: andestech,cpu-intc
-              - const: riscv,cpu-intc
-          - const: riscv,cpu-intc
-
-      interrupt-controller: true
-
-    required:
-      - '#interrupt-cells'
-      - compatible
-      - interrupt-controller
+    $ref: /schemas/interrupt-controller/riscv,cpu-intc.yaml#
 
   cpu-idle-states:
     $ref: /schemas/types.yaml#/definitions/phandle-array
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index 468c646247aa..a06dbc6b4928 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -177,6 +177,13 @@ properties:
             is supported as ratified at commit 5059e0ca641c ("update to
             ratified") of the riscv-zacas.
 
+        - const: zawrs
+          description: |
+            The Zawrs extension for entering a low-power state or for trapping
+            to a hypervisor while waiting on a store to a memory location, as
+            ratified in commit 98918c844281 ("Merge pull request #1217 from
+            riscv/zawrs") of riscv-isa-manual.
+
         - const: zba
           description: |
             The standard Zba bit-manipulation extension for address generation
@@ -220,6 +227,43 @@ properties:
             instructions as ratified at commit 6d33919 ("Merge pull request #158
             from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
 
+        - const: zca
+          description: |
+            The Zca extension part of Zc* standard extensions for code size
+            reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
+            RV64 as it contains no instructions") of riscv-code-size-reduction,
+            merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
+            of zc.adoc to src tree.").
+
+        - const: zcb
+          description: |
+            The Zcb extension part of Zc* standard extensions for code size
+            reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
+            RV64 as it contains no instructions") of riscv-code-size-reduction,
+            merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
+            of zc.adoc to src tree.").
+
+        - const: zcd
+          description: |
+            The Zcd extension part of Zc* standard extensions for code size
+            reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
+            RV64 as it contains no instructions") of riscv-code-size-reduction,
+            merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
+            of zc.adoc to src tree.").
+
+        - const: zcf
+          description: |
+            The Zcf extension part of Zc* standard extensions for code size
+            reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
+            RV64 as it contains no instructions") of riscv-code-size-reduction,
+            merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
+            of zc.adoc to src tree.").
+
+        - const: zcmop
+          description:
+            The standard Zcmop extension version 1.0, as ratified in commit
+            c732a4f39a4 ("Zcmop is ratified/1.0") of the riscv-isa-manual.
+
         - const: zfa
           description:
             The standard Zfa extension for additional floating point
@@ -363,6 +407,11 @@ properties:
             ratified in the 20191213 version of the unprivileged ISA
             specification.
 
+        - const: zimop
+          description:
+            The standard Zimop extension version 1.0, as ratified in commit
+            58220614a5f ("Zimop is ratified/1.0") of the riscv-isa-manual.
+
         - const: ztso
           description:
             The standard Ztso extension for total store ordering, as ratified
@@ -381,6 +430,36 @@ properties:
             instructions, as ratified in commit 56ed795 ("Update
             riscv-crypto-spec-vector.adoc") of riscv-crypto.
 
+        - const: zve32f
+          description:
+            The standard Zve32f extension for embedded processors, as ratified
+            in commit 6f702a2 ("Vector extensions are now ratified") of
+            riscv-v-spec.
+
+        - const: zve32x
+          description:
+            The standard Zve32x extension for embedded processors, as ratified
+            in commit 6f702a2 ("Vector extensions are now ratified") of
+            riscv-v-spec.
+
+        - const: zve64d
+          description:
+            The standard Zve64d extension for embedded processors, as ratified
+            in commit 6f702a2 ("Vector extensions are now ratified") of
+            riscv-v-spec.
+
+        - const: zve64f
+          description:
+            The standard Zve64f extension for embedded processors, as ratified
+            in commit 6f702a2 ("Vector extensions are now ratified") of
+            riscv-v-spec.
+
+        - const: zve64x
+          description:
+            The standard Zve64x extension for embedded processors, as ratified
+            in commit 6f702a2 ("Vector extensions are now ratified") of
+            riscv-v-spec.
+
         - const: zvfh
           description:
             The standard Zvfh extension for vectored half-precision
@@ -484,5 +563,58 @@ properties:
             Registers in the AX45MP datasheet.
             https://www.andestech.com/wp-content/uploads/AX45MP-1C-Rev.-5.0.0-Datasheet.pdf
 
+    allOf:
+      # Zcb depends on Zca
+      - if:
+          contains:
+            const: zcb
+        then:
+          contains:
+            const: zca
+      # Zcd depends on Zca and D
+      - if:
+          contains:
+            const: zcd
+        then:
+          allOf:
+            - contains:
+                const: zca
+            - contains:
+                const: d
+      # Zcf depends on Zca and F
+      - if:
+          contains:
+            const: zcf
+        then:
+          allOf:
+            - contains:
+                const: zca
+            - contains:
+                const: f
+      # Zcmop depends on Zca
+      - if:
+          contains:
+            const: zcmop
+        then:
+          contains:
+            const: zca
+
+allOf:
+  # Zcf extension does not exist on rv64
+  - if:
+      properties:
+        riscv,isa-extensions:
+          contains:
+            const: zcf
+        riscv,isa-base:
+          contains:
+            const: rv64i
+    then:
+      properties:
+        riscv,isa-extensions:
+          not:
+            contains:
+              const: zcf
+
 additionalProperties: true
 ...