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From 10b9626e8866873f047662b6e2ecdccd3235d76d Mon Sep 17 00:00:00 2001
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Message-Id: <10b9626e8866873f047662b6e2ecdccd3235d76d@dist-git>
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From: Andrea Bolognani <abologna@redhat.com>
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Date: Tue, 11 Aug 2015 17:16:10 +0200
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Subject: [PATCH] cpu: Forbid model fallback in the ppc64 driver
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Unlike what happens on x86, on ppc64 you can't mix and match CPU
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features to obtain the guest CPU you want regardless of the host
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CPU, so the concept of model fallback doesn't apply.
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Make sure CPU definitions emitted by the driver, eg. as output of
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the cpuBaseline() and cpuUpdate() calls, reflect this fact.
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(cherry picked from commit 344d1675e84be60c024080afd74f0da6d25c5f6b)
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Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1250977
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/cpu/cpu_ppc64.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/src/cpu/cpu_ppc64.c b/src/cpu/cpu_ppc64.c
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index f24fc41..33fec8b 100644
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--- a/src/cpu/cpu_ppc64.c
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+++ b/src/cpu/cpu_ppc64.c
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@@ -670,6 +670,7 @@ ppc64DriverUpdate(virCPUDefPtr guest,
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case VIR_CPU_MODE_HOST_MODEL:
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case VIR_CPU_MODE_HOST_PASSTHROUGH:
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guest->match = VIR_CPU_MATCH_EXACT;
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+ guest->fallback = VIR_CPU_FALLBACK_FORBID;
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virCPUDefFreeModel(guest);
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return virCPUDefCopyModel(guest, host, true);
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@@ -768,6 +769,7 @@ ppc64DriverBaseline(virCPUDefPtr *cpus,
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cpu->type = VIR_CPU_TYPE_GUEST;
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cpu->match = VIR_CPU_MATCH_EXACT;
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+ cpu->fallback = VIR_CPU_FALLBACK_FORBID;
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cleanup:
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ppc64MapFree(map);
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--
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2.5.0
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