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From 401cbf50f18234b0631b4b0e01b9e403137fee95 Mon Sep 17 00:00:00 2001
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Message-Id: <401cbf50f18234b0631b4b0e01b9e403137fee95@dist-git>
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From: Jiri Denemark <jdenemar@redhat.com>
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Date: Tue, 11 Apr 2017 20:45:07 +0200
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Subject: [PATCH] cpu: Introduce virCPUGetHostIsSupported
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Sometimes we want to call virCPUGetHost only when it is implemented for
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a given architecture to avoid logging expected and possibly misleading
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errors. The new virCPUGetHostIsSupported API may be used to guard such
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calls to virCPUGetHost.
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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(cherry picked from commit bf1a881715c905c67f7d38dcd5bd6c2afbff1f9b)
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https://bugzilla.redhat.com/show_bug.cgi?id=1444421
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/cpu/cpu.c | 20 ++++++++++++++++++++
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src/cpu/cpu.h | 3 +++
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src/libvirt_private.syms | 1 +
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3 files changed, 24 insertions(+)
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diff --git a/src/cpu/cpu.c b/src/cpu/cpu.c
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index 8a407ac18..702b14dbb 100644
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--- a/src/cpu/cpu.c
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+++ b/src/cpu/cpu.c
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@@ -358,6 +358,26 @@ virCPUDataFree(virCPUDataPtr data)
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/**
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+ * virCPUGetHostIsSupported:
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+ *
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+ * @arch: CPU architecture
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+ *
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+ * Check whether virCPUGetHost is supported for @arch.
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+ *
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+ * Returns true if virCPUGetHost is supported, false otherwise.
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+ */
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+bool
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+virCPUGetHostIsSupported(virArch arch)
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+{
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+ struct cpuArchDriver *driver;
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+
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+ VIR_DEBUG("arch=%s", virArchToString(arch));
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+
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+ return (driver = cpuGetSubDriver(arch)) && driver->getHost;
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+}
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+
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+
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+/**
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* virCPUGetHost:
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*
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* @arch: CPU architecture
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diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h
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index 352445c40..c6ca111e9 100644
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--- a/src/cpu/cpu.h
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+++ b/src/cpu/cpu.h
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@@ -183,6 +183,9 @@ virCPUDataNew(virArch arch);
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void
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virCPUDataFree(virCPUDataPtr data);
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+bool
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+virCPUGetHostIsSupported(virArch arch);
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+
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virCPUDefPtr
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virCPUGetHost(virArch arch,
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virCPUType type,
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diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
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index cc78c5975..d802e7598 100644
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--- a/src/libvirt_private.syms
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+++ b/src/libvirt_private.syms
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@@ -1026,6 +1026,7 @@ virCPUDataNew;
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virCPUDataParse;
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virCPUExpandFeatures;
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virCPUGetHost;
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+virCPUGetHostIsSupported;
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virCPUGetModels;
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virCPUProbeHost;
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virCPUTranslate;
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--
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2.12.2
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