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From 0fc66274cc8e22929a39e17b8d2280b222f1ae63 Mon Sep 17 00:00:00 2001
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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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Date: Fri, 14 Dec 2018 18:20:56 +0000
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Subject: [PATCH 4/5] pc: x-migrate-smi-count to PC_RHEL_COMPAT
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RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Message-id: <20181214182056.20233-3-dgilbert@redhat.com>
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Patchwork-id: 83521
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O-Subject: [RHEL8 qemu-kvm PATCH 2/2] pc: x-migrate-smi-count to PC_RHEL_COMPAT
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Bugzilla: 1659565
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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MSR_SMI_COUNT started being migrated in QEMU 2.12 and in the 2.12
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release this broke back migration to earlier versions; however
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that didn't cause a problem on RHEL because it also relied on newer
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kernel features that RHEL 7.* doesn't have.
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QEMU 3.0 got a fix (in PC_COMPAT_2_11) to fix the 2.12->earlier
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breakage, but given the kernel dependency, it makes more sense
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for us to tie it to 8.* machine types and keep the feature off for
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all 7.* machine types.
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In the 2.12 world we're doing this in PC_RHEL_COMPAT.
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Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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include/hw/i386/pc.h | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
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index dd473ca..244d7b5 100644
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--- a/include/hw/i386/pc.h
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+++ b/include/hw/i386/pc.h
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@@ -976,6 +976,11 @@ extern void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
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.driver = "vfio-pci",\
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.property = "x-no-geforce-quirks",\
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.value = "on",\
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+ },\
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+ { /* PC_RHEL_COMPAT from PC_COMPAT_2_11 bz 1659565 */ \
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+ .driver = TYPE_X86_CPU,\
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+ .property = "x-migrate-smi-count",\
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+ .value = "off",\
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},
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/* Similar to PC_COMPAT_2_11 + PC_COMPAT_2_10, but:
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--
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1.8.3.1
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