From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:54134) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZwZ1d-00019Z-8b for qemu-devel@nongnu.org; Wed, 11 Nov 2015 12:20:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZwYzp-0000yS-3Q for qemu-devel@nongnu.org; Wed, 11 Nov 2015 12:17:37 -0500 Received: from e17.ny.us.ibm.com ([129.33.205.207]:45243) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZwYzo-0000yI-Sm for qemu-devel@nongnu.org; Wed, 11 Nov 2015 12:15:45 -0500 Received: from localhost by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 11 Nov 2015 12:15:43 -0500 From: Aravinda Prasad Date: Wed, 11 Nov 2015 22:45:30 +0530 Message-ID: <20151111171530.4328.37008.stgit@aravindap> In-Reply-To: <20151111171135.4328.41819.stgit@aravindap> References: <20151111171135.4328.41819.stgit@aravindap> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] [PATCH 2/4] spapr: Register and handle HCALL to receive updated RTAS region List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, agraf@suse.de, qemu-devel@nongnu.org Cc: benh@au1.ibm.com, aik@ozlabs.ru, paulus@samba.org, sam.bobroff@au1.ibm.com, david@gibson.dropbear.id.au Receive updates from SLOF about the updated rtas-base. A separate patch for SLOF [1] adds functionality to invoke a private HCALL whenever OS issues instantiate-rtas with a new rtas-base. This is required as QEMU needs to know the updated rtas-base as it allocates error reporting structure in RTAS space upon a machine check exception. [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-August/120386.html Signed-off-by: Aravinda Prasad --- hw/ppc/spapr_hcall.c | 8 ++++++++ include/hw/ppc/spapr.h | 3 ++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 652ddf6..9703ed2 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -580,6 +580,13 @@ static target_ulong h_rtas(PowerPCCPU *cpu, sPAPRMachineState *spapr, nret, rtas_r3 + 12 + 4*nargs); } +static target_ulong h_rtas_update(PowerPCCPU *cpu, sPAPRMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + spapr->rtas_addr = args[0]; + return 0; +} + static target_ulong h_logical_load(PowerPCCPU *cpu, sPAPRMachineState *spapr, target_ulong opcode, target_ulong *args) { @@ -1008,6 +1015,7 @@ static void hypercall_register_types(void) /* qemu/KVM-PPC specific hcalls */ spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); + spapr_register_hypercall(KVMPPC_H_RTAS_UPDATE, h_rtas_update); spapr_register_hypercall(H_SET_MODE, h_set_mode); diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 91a61ab..b5cadd7 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -347,7 +347,8 @@ struct sPAPRMachineState { #define KVMPPC_H_LOGICAL_MEMOP (KVMPPC_HCALL_BASE + 0x1) /* Client Architecture support */ #define KVMPPC_H_CAS (KVMPPC_HCALL_BASE + 0x2) -#define KVMPPC_HCALL_MAX KVMPPC_H_CAS +#define KVMPPC_H_RTAS_UPDATE (KVMPPC_HCALL_BASE + 0x3) +#define KVMPPC_HCALL_MAX KVMPPC_H_RTAS_UPDATE typedef struct sPAPRDeviceTreeUpdateHeader { uint32_t version_id;