From patchwork Wed Jul 18 15:41:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Denis Plotnikov X-Patchwork-Id: 945772 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41W1dh5Pt0z9s4s for ; Thu, 19 Jul 2018 01:43:36 +1000 (AEST) Received: from localhost ([::1]:37254 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ffoc2-0003xK-Cd for incoming@patchwork.ozlabs.org; Wed, 18 Jul 2018 11:43:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52959) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ffoal-0003Hf-Dy for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ffoag-0000IQ-O2 for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:15 -0400 Received: from relay.sw.ru ([185.231.240.75]:36414) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ffoag-0000GD-D0 for qemu-devel@nongnu.org; Wed, 18 Jul 2018 11:42:10 -0400 Received: from vz-out.virtuozzo.com ([185.231.240.5] helo=dptest2.qa.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1ffoae-0006bu-Uh; Wed, 18 Jul 2018 18:42:09 +0300 From: Denis Plotnikov To: dgilbert@redhat.com, quintela@redhat.com, pbonzini@redhat.com Date: Wed, 18 Jul 2018 18:41:58 +0300 Message-Id: <20180718154200.26777-16-dplotnikov@virtuozzo.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180718154200.26777-1-dplotnikov@virtuozzo.com> References: <20180718154200.26777-1-dplotnikov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v1 15/17] kvm: add vCPU failed memeory access processing X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Is done with support of the KVM patch returning the faulting address. Signed-off-by: Denis Plotnikov --- target/i386/kvm.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 3ac5302bc5..55b8860d1a 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -45,6 +45,8 @@ #include "hw/pci/msi.h" #include "hw/pci/msix.h" #include "migration/blocker.h" +#include "migration/savevm.h" +#include "migration/ram.h" #include "exec/memattrs.h" #include "trace.h" @@ -3130,6 +3132,18 @@ static bool host_supports_vmx(void) return ecx & CPUID_EXT_VMX; } +static int kvm_handle_fail_mem_access(CPUState *cpu) +{ + struct kvm_run *run = cpu->kvm_run; + int ret = ram_process_page_fault((void *)run->fail_mem_access.hva); + + if (ret >= 0) { + cpu_resume(cpu); + } + + return ret; +} + #define VMX_INVALID_GUEST_STATE 0x80000021 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) @@ -3188,6 +3202,9 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) ioapic_eoi_broadcast(run->eoi.vector); ret = 0; break; + case KVM_EXIT_FAIL_MEM_ACCESS: + ret = kvm_handle_fail_mem_access(cs); + break; default: fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason); ret = -1;