From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anup Patel Date: Tue, 18 Oct 2022 19:38:51 +0530 Subject: [PATCH kvmtool 3/6] riscv: Add zihintpause extension support In-Reply-To: <20221018140854.69846-1-apatel@ventanamicro.com> References: <20221018140854.69846-1-apatel@ventanamicro.com> Message-ID: <20221018140854.69846-4-apatel@ventanamicro.com> List-Id: To: kvm-riscv@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Mayuresh Chitale 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 --- riscv/fdt.c | 1 + 1 file changed, 1 insertion(+) 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 @@ struct isa_ext_info isa_info_arr[] = { {"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) -- 2.34.1