From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37558) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTqeh-0006Dh-9T for qemu-devel@nongnu.org; Thu, 11 Feb 2016 07:47:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aTqee-00057v-GG for qemu-devel@nongnu.org; Thu, 11 Feb 2016 07:47:31 -0500 From: Thomas Huth Date: Thu, 11 Feb 2016 13:47:18 +0100 Message-Id: <1455194841-4283-2-git-send-email-thuth@redhat.com> In-Reply-To: <1455194841-4283-1-git-send-email-thuth@redhat.com> References: <1455194841-4283-1-git-send-email-thuth@redhat.com> Subject: [Qemu-devel] [PATCH v2 1/4] hw/ppc/spapr: Add h_set_sprg0 hypercall List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Cc: qemu-devel@nongnu.org This is a very simple hypercall that only sets up the SPRG0 register for the guest (since writing to SPRG0 was only permitted to the hypervisor in older versions of the PowerISA). Signed-off-by: Thomas Huth --- hw/ppc/spapr_hcall.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 12f8c33..63f41ec 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -332,6 +332,15 @@ static target_ulong h_read(PowerPCCPU *cpu, sPAPRMachineState *spapr, return H_SUCCESS; } +static target_ulong h_set_sprg0(PowerPCCPU *cpu, sPAPRMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + cpu_synchronize_state(CPU(cpu)); + cpu->env.spr[SPR_SPRG0] = args[0]; + + return H_SUCCESS; +} + static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPRMachineState *spapr, target_ulong opcode, target_ulong *args) { @@ -997,6 +1006,10 @@ static void hypercall_register_types(void) spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + /* processor register resource access h-calls */ + spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0); + spapr_register_hypercall(H_SET_MODE, h_set_mode); + /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate * here between the "CI" and the "CACHE" variants, they will use whatever * mapping attributes qemu is using. When using KVM, the kernel will @@ -1013,8 +1026,6 @@ static void hypercall_register_types(void) /* qemu/KVM-PPC specific hcalls */ spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); - spapr_register_hypercall(H_SET_MODE, h_set_mode); - /* ibm,client-architecture-support support */ spapr_register_hypercall(KVMPPC_H_CAS, h_client_architecture_support); } -- 1.8.3.1