10 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/riscv/acpi.rst b/Documentation/arch/riscv/acpi.rst
index 9870a28281..9870a28281 100644
--- a/Documentation/riscv/acpi.rst
+++ b/Documentation/arch/riscv/acpi.rst
diff --git a/Documentation/riscv/boot-image-header.rst b/Documentation/arch/riscv/boot-image-header.rst
index df2ffc173e..df2ffc173e 100644
--- a/Documentation/riscv/boot-image-header.rst
+++ b/Documentation/arch/riscv/boot-image-header.rst
diff --git a/Documentation/riscv/boot.rst b/Documentation/arch/riscv/boot.rst
index 6077b587a8..6077b587a8 100644
--- a/Documentation/riscv/boot.rst
+++ b/Documentation/arch/riscv/boot.rst
diff --git a/Documentation/riscv/features.rst b/Documentation/arch/riscv/features.rst
index 36e90144ad..36e90144ad 100644
--- a/Documentation/riscv/features.rst
+++ b/Documentation/arch/riscv/features.rst
diff --git a/Documentation/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index a52996b22f..7b2384de47 100644
--- a/Documentation/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -77,6 +77,9 @@ The following keys are defined:
   * :c:macro:`RISCV_HWPROBE_EXT_ZBS`: The Zbs extension is supported, as defined
        in version 1.0 of the Bit-Manipulation ISA extensions.
 
+  * :c:macro:`RISCV_HWPROBE_EXT_ZICBOZ`: The Zicboz extension is supported, as
+       ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
+
 * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
   information about the selected set of processors.
 
@@ -96,3 +99,6 @@ The following keys are defined:
 
   * :c:macro:`RISCV_HWPROBE_MISALIGNED_UNSUPPORTED`: Misaligned accesses are
     not supported at all and will generate a misaligned address fault.
+
+* :c:macro:`RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE`: An unsigned int which
+  represents the size of the Zicboz block in bytes.
diff --git a/Documentation/riscv/index.rst b/Documentation/arch/riscv/index.rst
index 4dab0cb4b9..4dab0cb4b9 100644
--- a/Documentation/riscv/index.rst
+++ b/Documentation/arch/riscv/index.rst
diff --git a/Documentation/riscv/patch-acceptance.rst b/Documentation/arch/riscv/patch-acceptance.rst
index 634aa222b4..634aa222b4 100644
--- a/Documentation/riscv/patch-acceptance.rst
+++ b/Documentation/arch/riscv/patch-acceptance.rst
diff --git a/Documentation/riscv/uabi.rst b/Documentation/arch/riscv/uabi.rst
index 8960fac42c..54d199dce7 100644
--- a/Documentation/riscv/uabi.rst
+++ b/Documentation/arch/riscv/uabi.rst
@@ -42,6 +42,26 @@ An example string following the order is::
 
    rv64imadc_zifoo_zigoo_zafoo_sbar_scar_zxmbaz_xqux_xrux
 
+"isa" and "hart isa" lines in /proc/cpuinfo
+-------------------------------------------
+
+The "isa" line in /proc/cpuinfo describes the lowest common denominator of
+RISC-V ISA extensions recognized by the kernel and implemented on all harts. The
+"hart isa" line, in contrast, describes the set of extensions recognized by the
+kernel on the particular hart being described, even if those extensions may not
+be present on all harts in the system.
+
+In both lines, the presence of an extension guarantees only that the hardware
+has the described capability. Additional kernel support or policy changes may be
+required before an extension's capability is fully usable by userspace programs.
+Similarly, for S-mode extensions, presence in one of these lines does not
+guarantee that the kernel is taking advantage of the extension, or that the
+feature will be visible in guest VMs managed by this kernel.
+
+Inversely, the absence of an extension in these lines does not necessarily mean
+the hardware does not support that feature. The running kernel may not recognize
+the extension, or may have deliberately removed it from the listing.
+
 Misaligned accesses
 -------------------
 
diff --git a/Documentation/riscv/vector.rst b/Documentation/arch/riscv/vector.rst
index 75dd88a62e..75dd88a62e 100644
--- a/Documentation/riscv/vector.rst
+++ b/Documentation/arch/riscv/vector.rst
diff --git a/Documentation/riscv/vm-layout.rst b/Documentation/arch/riscv/vm-layout.rst
index 69ff6da1db..69ff6da1db 100644
--- a/Documentation/riscv/vm-layout.rst
+++ b/Documentation/arch/riscv/vm-layout.rst