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From a573bf83cd8f541f3129a53238ee7c2e9ad61ff8 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Wed, 26 Mar 2014 12:30:43 +0100
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Subject: [PATCH 49/49] fix machine-check propagation
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <1395837043-17408-1-git-send-email-pbonzini@redhat.com>
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Patchwork-id: 58256
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O-Subject: [RHEL 7.0 qemu-kvm PATCH] fix machine-check propagation
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Bugzilla: 740107
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RH-Acked-by: Marcel Apfelbaum <marcel.a@redhat.com>
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RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert (git) <dgilbert@redhat.com>
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From: Dean Nelson <dnelson@redhat.com>
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Bugzilla: 740107
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Upstream status: fixed by a big patch that should not be backported
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Brew build: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=7257203
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Machine-check propagation was broken by this commit
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    commit a60f24b56b07f46453424263b276b0879c25c4e6
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    Author: Andreas Färber <afaerber@suse.de>
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    Date:   Sat Dec 1 05:35:08 2012 +0100
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    cpu: Move kvm_state field into CPUState
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    Adapt some functions to take CPUState / {PowerPC,S390}CPU argument.
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    Signed-off-by: Andreas Färber <afaerber@suse.de>
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due to a typo.  In RHEL7, first_cpu is an "env" so you need ENV_GET_CPU
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to convert it to a "cpu" and fish out the kvm_state.  ENV_GET_CPU is
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basically a "container_of" type of operation.  Instead, CPU was being used
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(which is just a cast).
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Upstream, everything was fixed magically when first_cpu was changed
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from "env" to "cpu" in commit 182735e (cpu: Make first_cpu and next_cpu
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CPUState, 2013-05-29).
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This patch fixes the bug by using the right cast.  All the work was done
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by Dean Nelson.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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 target-i386/kvm.c | 2 +-
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 1 file changed, 1 insertion(+), 1 deletion(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 target-i386/kvm.c |    2 +-
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 1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/target-i386/kvm.c b/target-i386/kvm.c
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index ba2cd7f..6b250f5 100644
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--- a/target-i386/kvm.c
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+++ b/target-i386/kvm.c
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@@ -357,7 +357,7 @@ int kvm_arch_on_sigbus(int code, void *addr)
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         /* Hope we are lucky for AO MCE */
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         if (qemu_ram_addr_from_host(addr, &ram_addr) ||
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-            !kvm_physical_memory_addr_from_host(CPU(first_cpu)->kvm_state,
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+            !kvm_physical_memory_addr_from_host(ENV_GET_CPU(first_cpu)->kvm_state,
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                                                 addr, &paddr)) {
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             fprintf(stderr, "Hardware memory error for memory used by "
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                     "QEMU itself instead of guest system!: %p\n", addr);
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-- 
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1.7.1
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