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| author |  Clément Léger <cleger@rivosinc.com>
| 2024-02-21 09:31:06 +0100 |
|---|---|---|
| committer |  Palmer Dabbelt <palmer@rivosinc.com>
| 2024-04-28 14:50:38 -0700 |
| commit | 63f93a3ca891fd90353cf81f5d2fc4cbc3508f1a (patch) | |
| tree | 0ac58a9ea623c45db680fde97a110db564fe308f /arch/riscv/kernel | |
| parent | riscv: misaligned: remove CONFIG_RISCV_M_MODE specific code (diff) | |
| download | linux-63f93a3ca891fd90353cf81f5d2fc4cbc3508f1a.tar.gz linux-63f93a3ca891fd90353cf81f5d2fc4cbc3508f1a.tar.bz2 linux-63f93a3ca891fd90353cf81f5d2fc4cbc3508f1a.zip | |
riscv: hwprobe: export Zihintpause ISA extension
Export the Zihintpause ISA extension through hwprobe which allows using
"pause" instructions. Some userspace applications (OpenJDK for
instance) uses this to handle some locking back-off.
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20240221083108.1235311-1-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/sys_hwprobe.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c index 8cae41a502dd..969ef3d59dbe 100644 --- a/arch/riscv/kernel/sys_hwprobe.c +++ b/arch/riscv/kernel/sys_hwprobe.c @@ -111,6 +111,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZTSO); EXT_KEY(ZACAS); EXT_KEY(ZICOND); + EXT_KEY(ZIHINTPAUSE); if (has_vector()) { EXT_KEY(ZVBB); |