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From 6c2f10596f53c29687a64aa78f339e3043850936 Mon Sep 17 00:00:00 2001
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From: David Gibson <dgibson@redhat.com>
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Date: Wed, 25 Jul 2018 08:36:42 +0100
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Subject: [PATCH 03/14] RHEL-8.0: Add pseries-rhel7.6.0-sxxm machine type
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RH-Author: David Gibson <dgibson@redhat.com>
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Message-id: <20180725083642.11004-1-dgibson@redhat.com>
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Patchwork-id: 81501
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O-Subject: [RHEL-8.0 qemu-kvm PATCH] RHEL-8.0: Add pseries-rhel7.6.0-sxxm machine type
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Bugzilla: 1595501
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Serhii Popovych <spopovyc@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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For the pseries-rhel7.3.0 .. pseries-rhel7.5.0 machine types we have -sxxm
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variants, the only difference being that the -sxxm variants have the
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Spectre and Meltdown mitigations available to guests by default.
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We'd delayed on adding a similar variant for RHEL 7.6, in the hope that we
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might be able to enable the mitigations by default for the ordinary 7.6
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machine type. This requires that updated POWER8 firmware (FW860.51 or
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newer) be installed on the host.
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The updated firmware was only released late May, and it's not clear how
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quickly and widely it will be deployed. For that reason, plus for
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consistency in how things need to be configured across rhel-7.y, we're now
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adding a pseries-rhel7.6.0-sxxm machine type.
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Upstream status: downstream only
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1595501
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Signed-off-by: David Gibson <dgibson@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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hw/ppc/spapr.c | 22 ++++++++++++++++++++++
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1 file changed, 22 insertions(+)
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diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
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index 7de3f07..a61dafd 100644
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--- a/hw/ppc/spapr.c
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+++ b/hw/ppc/spapr.c
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@@ -4355,6 +4355,28 @@ static void spapr_machine_rhel760_class_options(MachineClass *mc)
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DEFINE_SPAPR_MACHINE(rhel760, "rhel7.6.0", true);
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/*
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+ * pseries-rhel7.6.0-sxxm
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+ *
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+ * pseries-rhel7.6.0 with speculative execution exploit mitigations enabled by default
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+ */
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+static void spapr_machine_rhel760sxxm_instance_options(MachineState *machine)
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+{
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+ spapr_machine_rhel760_instance_options(machine);
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+}
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+
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+static void spapr_machine_rhel760sxxm_class_options(MachineClass *mc)
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+{
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+ sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc);
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+
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+ spapr_machine_rhel760_class_options(mc);
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+ smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND;
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+ smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND;
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+ smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_FIXED_CCD;
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+}
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+
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+DEFINE_SPAPR_MACHINE(rhel760sxxm, "rhel7.6.0-sxxm", false);
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+
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+/*
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* pseries-rhel7.5.0
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* like SPAPR_COMPAT_2_11 and SPAPR_COMPAT_2_10
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* SPAPR_CAP_HTM already enabled in 7.4
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--
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1.8.3.1
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