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X-Received-From: 2607:f8b0:4864:20::644 Subject: [Qemu-devel] [PATCH v4 2/5] spapr: Implement H_PROD X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kurz , Nicholas Piggin , qemu-devel@nongnu.org, qemu-ppc@nongnu.org, =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" H_PROD is added, and H_CEDE is modified to test the prod bit according to PAPR. Signed-off-by: Nicholas Piggin --- hw/ppc/spapr_hcall.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index e615881ac4..8b208ab259 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1050,14 +1050,41 @@ static target_ulong h_cede(PowerPCCPU *cpu, SpaprMachineState *spapr, { CPUPPCState *env = &cpu->env; CPUState *cs = CPU(cpu); + SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); env->msr |= (1ULL << MSR_EE); hreg_compute_hflags(env); + + if (spapr_cpu->prod) { + spapr_cpu->prod = false; + return H_SUCCESS; + } + if (!cpu_has_work(cs)) { cs->halted = 1; cs->exception_index = EXCP_HLT; cs->exit_request = 1; } + + return H_SUCCESS; +} + +static target_ulong h_prod(PowerPCCPU *cpu, SpaprMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + target_long target = args[0]; + CPUState *cs; + SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); + + cs = CPU(spapr_find_cpu(target)); + if (!cs) { + return H_PARAMETER; + } + + spapr_cpu->prod = true; + cs->halted = 0; + qemu_cpu_kick(cs); + return H_SUCCESS; } @@ -1882,6 +1909,8 @@ static void hypercall_register_types(void) /* hcall-splpar */ spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + spapr_register_hypercall(H_PROD, h_prod); + spapr_register_hypercall(H_SIGNAL_SYS_RESET, h_signal_sys_reset); /* processor register resource access h-calls */ -- 2.20.1