From patchwork Mon Jul 30 11:11:33 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bharat Bhushan X-Patchwork-Id: 173985 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 588582C0087 for ; Mon, 30 Jul 2012 21:10:56 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752958Ab2G3LKz (ORCPT ); Mon, 30 Jul 2012 07:10:55 -0400 Received: from am1ehsobe006.messaging.microsoft.com ([213.199.154.209]:32148 "EHLO am1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752077Ab2G3LKy (ORCPT ); Mon, 30 Jul 2012 07:10:54 -0400 Received: from mail76-am1-R.bigfish.com (10.3.201.240) by AM1EHSOBE010.bigfish.com (10.3.204.30) with Microsoft SMTP Server id 14.1.225.23; Mon, 30 Jul 2012 11:10:52 +0000 Received: from mail76-am1 (localhost [127.0.0.1]) by mail76-am1-R.bigfish.com (Postfix) with ESMTP id AE23E2A00FF; Mon, 30 Jul 2012 11:10:52 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1202h1082kzz8275bhz2dh2a8h668h839he5bhf0ah) Received: from mail76-am1 (localhost.localdomain [127.0.0.1]) by mail76-am1 (MessageSwitch) id 1343646650849544_13278; Mon, 30 Jul 2012 11:10:50 +0000 (UTC) Received: from AM1EHSMHS013.bigfish.com (unknown [10.3.201.237]) by mail76-am1.bigfish.com (Postfix) with ESMTP id C367140045; Mon, 30 Jul 2012 11:10:50 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by AM1EHSMHS013.bigfish.com (10.3.207.151) with Microsoft SMTP Server (TLS) id 14.1.225.23; Mon, 30 Jul 2012 11:10:50 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.2.298.5; Mon, 30 Jul 2012 06:10:48 -0500 Received: from freescale.com ([10.232.15.72]) by az84smr01.freescale.net (8.14.3/8.14.0) with SMTP id q6UBAdog025207; Mon, 30 Jul 2012 04:10:40 -0700 Received: by freescale.com (sSMTP sendmail emulation); Mon, 30 Jul 2012 16:41:34 +0530 From: Bharat Bhushan To: , , CC: Bharat Bhushan Subject: [PATCH 1/2] KVM: PPC: booke: Allow multiple exception types Date: Mon, 30 Jul 2012 16:41:33 +0530 Message-ID: <1343646694-19665-1-git-send-email-Bharat.Bhushan@freescale.com> X-Mailer: git-send-email 1.7.0.4 MIME-Version: 1.0 X-OriginatorOrg: freescale.com Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Current kvmppc_booke_handlers uses the same macro (KVM_HANDLER) and all handlers are considered to be the same size. This will not be the case if we want to use different macros for different handlers. This patch improves the kvmppc_booke_handler so that it can support different macros for different handlers. Signed-off-by: Liu Yu [bharat.bhushan@freescale.com: Substantial changes] Signed-off-by: Bharat Bhushan --- arch/powerpc/include/asm/kvm_ppc.h | 2 - arch/powerpc/kvm/booke.c | 9 ++++--- arch/powerpc/kvm/booke.h | 1 + arch/powerpc/kvm/booke_interrupts.S | 37 ++++++++++++++++++++++++++++++++-- arch/powerpc/kvm/e500.c | 13 +++++++---- 5 files changed, 48 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 823d563..6d3e665 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -47,8 +47,6 @@ enum emulation_result { extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); -extern char kvmppc_handlers_start[]; -extern unsigned long kvmppc_handler_len; extern void kvmppc_handler_highmem(void); extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 47a7925..6fbdcfc 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -1528,6 +1528,7 @@ int __init kvmppc_booke_init(void) { #ifndef CONFIG_KVM_BOOKE_HV unsigned long ivor[16]; + unsigned long *handler = kvmppc_booke_handler_addr; unsigned long max_ivor = 0; int i; @@ -1561,14 +1562,14 @@ int __init kvmppc_booke_init(void) for (i = 0; i < 16; i++) { if (ivor[i] > max_ivor) - max_ivor = ivor[i]; + max_ivor = i; memcpy((void *)kvmppc_booke_handlers + ivor[i], - kvmppc_handlers_start + i * kvmppc_handler_len, - kvmppc_handler_len); + (void *)handler[i], handler[i + 1] - handler[i]); } flush_icache_range(kvmppc_booke_handlers, - kvmppc_booke_handlers + max_ivor + kvmppc_handler_len); + kvmppc_booke_handlers + ivor[max_ivor] + + handler[max_ivor + 1] - handler[max_ivor]); #endif /* !BOOKE_HV */ return 0; } diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h index ba61974..de9e526 100644 --- a/arch/powerpc/kvm/booke.h +++ b/arch/powerpc/kvm/booke.h @@ -65,6 +65,7 @@ (1 << BOOKE_IRQPRIO_CRITICAL)) extern unsigned long kvmppc_booke_handlers; +extern unsigned long kvmppc_booke_handler_addr[]; void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr); void kvmppc_mmu_msr_notify(struct kvm_vcpu *vcpu, u32 old_msr); diff --git a/arch/powerpc/kvm/booke_interrupts.S b/arch/powerpc/kvm/booke_interrupts.S index 09456c4..c7aebc5 100644 --- a/arch/powerpc/kvm/booke_interrupts.S +++ b/arch/powerpc/kvm/booke_interrupts.S @@ -74,6 +74,14 @@ _GLOBAL(kvmppc_handler_\ivor_nr) bctr .endm +.macro KVM_HANDLER_ADDR ivor_nr + .long kvmppc_handler_\ivor_nr +.endm + +.macro KVM_HANDLER_END + .long kvmppc_handlers_end +.endm + _GLOBAL(kvmppc_handlers_start) KVM_HANDLER BOOKE_INTERRUPT_CRITICAL SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0 KVM_HANDLER BOOKE_INTERRUPT_MACHINE_CHECK SPRN_SPRG_RSCRATCH_MC SPRN_MCSRR0 @@ -94,9 +102,7 @@ KVM_HANDLER BOOKE_INTERRUPT_DEBUG SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0 KVM_HANDLER BOOKE_INTERRUPT_SPE_UNAVAIL SPRN_SPRG_RSCRATCH0 SPRN_SRR0 KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_DATA SPRN_SPRG_RSCRATCH0 SPRN_SRR0 KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_ROUND SPRN_SPRG_RSCRATCH0 SPRN_SRR0 - -_GLOBAL(kvmppc_handler_len) - .long kvmppc_handler_1 - kvmppc_handler_0 +_GLOBAL(kvmppc_handlers_end) /* Registers: * SPRG_SCRATCH0: guest r4 @@ -464,6 +470,31 @@ lightweight_exit: lwz r4, VCPU_GPR(r4)(r4) rfi + .data + .align 4 + .globl kvmppc_booke_handler_addr +kvmppc_booke_handler_addr: +KVM_HANDLER_ADDR BOOKE_INTERRUPT_CRITICAL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_MACHINE_CHECK +KVM_HANDLER_ADDR BOOKE_INTERRUPT_DATA_STORAGE +KVM_HANDLER_ADDR BOOKE_INTERRUPT_INST_STORAGE +KVM_HANDLER_ADDR BOOKE_INTERRUPT_EXTERNAL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_ALIGNMENT +KVM_HANDLER_ADDR BOOKE_INTERRUPT_PROGRAM +KVM_HANDLER_ADDR BOOKE_INTERRUPT_FP_UNAVAIL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_SYSCALL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_AP_UNAVAIL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_DECREMENTER +KVM_HANDLER_ADDR BOOKE_INTERRUPT_FIT +KVM_HANDLER_ADDR BOOKE_INTERRUPT_WATCHDOG +KVM_HANDLER_ADDR BOOKE_INTERRUPT_DTLB_MISS +KVM_HANDLER_ADDR BOOKE_INTERRUPT_ITLB_MISS +KVM_HANDLER_ADDR BOOKE_INTERRUPT_DEBUG +KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_UNAVAIL +KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_FP_DATA +KVM_HANDLER_ADDR BOOKE_INTERRUPT_SPE_FP_ROUND +KVM_HANDLER_END /*Always keep this in end*/ + #ifdef CONFIG_SPE _GLOBAL(kvmppc_save_guest_spe) cmpi 0,r3,0 diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c index b479ed7..cb7a5e7 100644 --- a/arch/powerpc/kvm/e500.c +++ b/arch/powerpc/kvm/e500.c @@ -491,12 +491,15 @@ static int __init kvmppc_e500_init(void) { int r, i; unsigned long ivor[3]; + unsigned long *handler = kvmppc_booke_handler_addr; unsigned long max_ivor = 0; r = kvmppc_core_check_processor_compat(); if (r) return r; + handler += 16; + r = kvmppc_booke_init(); if (r) return r; @@ -506,15 +509,15 @@ static int __init kvmppc_e500_init(void) ivor[1] = mfspr(SPRN_IVOR33); ivor[2] = mfspr(SPRN_IVOR34); for (i = 0; i < 3; i++) { - if (ivor[i] > max_ivor) - max_ivor = ivor[i]; + if (ivor[i] > ivor[max_ivor]) + max_ivor = i; memcpy((void *)kvmppc_booke_handlers + ivor[i], - kvmppc_handlers_start + (i + 16) * kvmppc_handler_len, - kvmppc_handler_len); + (void *)handler[i], handler[i + 1] - handler[i]); } flush_icache_range(kvmppc_booke_handlers, - kvmppc_booke_handlers + max_ivor + kvmppc_handler_len); + kvmppc_booke_handlers + ivor[max_ivor] + + handler[max_ivor + 1] - handler[max_ivor]); return kvm_init(NULL, sizeof(struct kvmppc_vcpu_e500), 0, THIS_MODULE); }