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From 3d7a4041d31e403dc9e762b34f7faf36f7f20a28 Mon Sep 17 00:00:00 2001
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Message-Id: <3d7a4041d31e403dc9e762b34f7faf36f7f20a28@dist-git>
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From: Jiri Denemark <jdenemar@redhat.com>
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Date: Tue, 26 Apr 2022 15:02:51 +0200
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Subject: [PATCH] cpu_x86: Refactor feature list comparison in
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x86DecodeUseCandidate
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It will become more complicated and so it deserves to be separated into
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a new function.
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit 1d6ca40ac23c039abc4392b668f256d0eda33280)
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https://bugzilla.redhat.com/show_bug.cgi?id=1851227
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/cpu/cpu_x86.c | 31 ++++++++++++++++++++++---------
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1 file changed, 22 insertions(+), 9 deletions(-)
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diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
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index f007487824..81c2441b8b 100644
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--- a/src/cpu/cpu_x86.c
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+++ b/src/cpu/cpu_x86.c
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@@ -1970,6 +1970,27 @@ virCPUx86Compare(virCPUDef *host,
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}
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+static int
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+virCPUx86CompareCandidateFeatureList(virCPUDef *cpuCurrent,
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+ virCPUDef *cpuCandidate)
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+{
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+ size_t current = cpuCurrent->nfeatures;
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+ size_t candidate = cpuCandidate->nfeatures;
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+
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+ if (candidate < current) {
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+ VIR_DEBUG("%s is better than %s: %zu < %zu",
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+ cpuCandidate->model, cpuCurrent->model,
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+ candidate, current);
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+ return 1;
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+ }
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+
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+ VIR_DEBUG("%s is not better than %s: %zu >= %zu",
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+ cpuCandidate->model, cpuCurrent->model,
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+ candidate, current);
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+ return 0;
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+}
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+
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+
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/*
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* Checks whether a candidate model is a better fit for the CPU data than the
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* current model.
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@@ -2038,15 +2059,7 @@ x86DecodeUseCandidate(virCPUx86Model *current,
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}
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}
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- if (cpuCurrent->nfeatures > cpuCandidate->nfeatures) {
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- VIR_DEBUG("%s results in shorter feature list than %s",
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- cpuCandidate->model, cpuCurrent->model);
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- return 1;
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- }
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-
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- VIR_DEBUG("%s does not result in shorter feature list than %s",
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- cpuCandidate->model, cpuCurrent->model);
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- return 0;
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+ return virCPUx86CompareCandidateFeatureList(cpuCurrent, cpuCandidate);
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}
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--
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2.35.1
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