riscv: Add zihintpause extension support
The zihintpause extension allows software to use the PAUSE instruction to
reduce energy consumption while executing spin-wait code sequences. Add the
zihintpause extension to the device tree if it is supported by the host.
Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
Link: https://lore.kernel.org/r/20221018140854.69846-4-apatel@ventanamicro.com
Signed-off-by: Will Deacon <will@kernel.org>
diff --git a/riscv/fdt.c b/riscv/fdt.c
index 42bc062..ef0bc47 100644
--- a/riscv/fdt.c
+++ b/riscv/fdt.c
@@ -20,6 +20,7 @@
{"svpbmt", KVM_RISCV_ISA_EXT_SVPBMT},
{"sstc", KVM_RISCV_ISA_EXT_SSTC},
{"svinval", KVM_RISCV_ISA_EXT_SVINVAL},
+ {"zihintpause", KVM_RISCV_ISA_EXT_ZIHINTPAUSE},
};
static void dump_fdt(const char *dtb_file, void *fdt)
