[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240517145302.971019-15-cleger@rivosinc.com>
Date: Fri, 17 May 2024 16:52:54 +0200
From: Clément Léger <cleger@...osinc.com>
To: Jonathan Corbet <corbet@....net>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Conor Dooley <conor@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Anup Patel <anup@...infault.org>,
Shuah Khan <shuah@...nel.org>
Cc: Clément Léger <cleger@...osinc.com>,
Atish Patra <atishp@...shpatra.org>,
linux-doc@...r.kernel.org,
linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
kvm@...r.kernel.org,
kvm-riscv@...ts.infradead.org,
linux-kselftest@...r.kernel.org
Subject: [PATCH v5 14/16] riscv: hwprobe: export Zcmop ISA extension
Export Zcmop ISA extension through hwprobe.
Signed-off-by: Clément Léger <cleger@...osinc.com>
---
Documentation/arch/riscv/hwprobe.rst | 4 ++++
arch/riscv/include/uapi/asm/hwprobe.h | 1 +
arch/riscv/kernel/sys_hwprobe.c | 1 +
3 files changed, 6 insertions(+)
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index cad84f51412d..9a77b7d14539 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -216,6 +216,10 @@ The following keys are defined:
("Zcf doesn't exist on RV64 as it contains no instructions") of
riscv-code-size-reduction.
+ * :c:macro:`RISCV_HWPROBE_EXT_ZCMOP`: The Zcmop May-Be-Operations extension is
+ supported as defined in the RISC-V ISA manual starting from commit
+ c732a4f39a4 ("Zcmop is ratified/1.0").
+
* :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
information about the selected set of processors.
diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h
index 652b2373729f..3a3d6a2b4f48 100644
--- a/arch/riscv/include/uapi/asm/hwprobe.h
+++ b/arch/riscv/include/uapi/asm/hwprobe.h
@@ -65,6 +65,7 @@ struct riscv_hwprobe {
#define RISCV_HWPROBE_EXT_ZCB (1ULL << 39)
#define RISCV_HWPROBE_EXT_ZCD (1ULL << 40)
#define RISCV_HWPROBE_EXT_ZCF (1ULL << 41)
+#define RISCV_HWPROBE_EXT_ZCMOP (1ULL << 42)
#define RISCV_HWPROBE_KEY_CPUPERF_0 5
#define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
#define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
index 11def345a42d..34c95eaf8cd1 100644
--- a/arch/riscv/kernel/sys_hwprobe.c
+++ b/arch/riscv/kernel/sys_hwprobe.c
@@ -115,6 +115,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
EXT_KEY(ZIMOP);
EXT_KEY(ZCA);
EXT_KEY(ZCB);
+ EXT_KEY(ZCMOP);
if (has_vector()) {
EXT_KEY(ZVBB);
--
2.43.0
Powered by blists - more mailing lists