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From 3ad9cd82d4fe7e87665a0233662712725f5d3d5d Mon Sep 17 00:00:00 2001
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Message-Id: <3ad9cd82d4fe7e87665a0233662712725f5d3d5d@dist-git>
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From: Jiri Denemark <jdenemar@redhat.com>
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Date: Fri, 7 Feb 2020 10:41:44 +0100
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Subject: [PATCH] cpu: Drop unused KVM features
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Most of the internally defined KVM CPUID features are not actually used
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by libvirt. The QEMU driver may enable or disable them on the command
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line, but we don't check for the associated CPU properties or CPUID
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bits. They would be useless with QEMU 4.1 anyway since their names were
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only remotely similar to the actual feature names.
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit 9e6172937f8d8f832359dd5eeb4e7c92f9defcbf)
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https://bugzilla.redhat.com/show_bug.cgi?id=1794868
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Conflicts:
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src/cpu/cpu_x86_data.h
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- all defines are indented as downstream lacks #pragma once
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Message-Id: <763f5d57b6cb930d9edbfbe8edbb7d5797a48150.1581064395.git.jdenemar@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/cpu/cpu_x86.c | 24 ------------------------
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src/cpu/cpu_x86_data.h | 8 --------
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2 files changed, 32 deletions(-)
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diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
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index ecf11926b4..0459a0d1c8 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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@@ -77,24 +77,8 @@ struct _virCPUx86Feature {
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} \
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}
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE,
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- 0x40000001, 0x00000001);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_NOP_IO_DELAY,
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- 0x40000001, 0x00000002);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_MMU_OP,
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- 0x40000001, 0x00000004);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE2,
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- 0x40000001, 0x00000008);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_ASYNC_PF,
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- 0x40000001, 0x00000010);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_STEAL_TIME,
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- 0x40000001, 0x00000020);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_PV_EOI,
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- 0x40000001, 0x00000040);
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KVM_FEATURE_DEF(VIR_CPU_x86_KVM_PV_UNHALT,
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0x40000001, 0x00000080);
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-KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE_STABLE_BIT,
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- 0x40000001, 0x01000000);
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KVM_FEATURE_DEF(VIR_CPU_x86_HV_RUNTIME,
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0x40000003, 0x00000001);
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@@ -121,15 +105,7 @@ KVM_FEATURE_DEF(VIR_CPU_x86_HV_TLBFLUSH,
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static virCPUx86Feature x86_kvm_features[] =
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{
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- KVM_FEATURE(VIR_CPU_x86_KVM_CLOCKSOURCE),
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- KVM_FEATURE(VIR_CPU_x86_KVM_NOP_IO_DELAY),
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- KVM_FEATURE(VIR_CPU_x86_KVM_MMU_OP),
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- KVM_FEATURE(VIR_CPU_x86_KVM_CLOCKSOURCE2),
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- KVM_FEATURE(VIR_CPU_x86_KVM_ASYNC_PF),
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- KVM_FEATURE(VIR_CPU_x86_KVM_STEAL_TIME),
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- KVM_FEATURE(VIR_CPU_x86_KVM_PV_EOI),
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KVM_FEATURE(VIR_CPU_x86_KVM_PV_UNHALT),
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- KVM_FEATURE(VIR_CPU_x86_KVM_CLOCKSOURCE_STABLE_BIT),
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KVM_FEATURE(VIR_CPU_x86_HV_RUNTIME),
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KVM_FEATURE(VIR_CPU_x86_HV_SYNIC),
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KVM_FEATURE(VIR_CPU_x86_HV_STIMER),
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diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h
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index 9668b13eb9..8a189f854e 100644
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--- a/src/cpu/cpu_x86_data.h
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+++ b/src/cpu/cpu_x86_data.h
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@@ -49,15 +49,7 @@ struct _virCPUx86MSR {
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# define CPUX86_KVM 0x40000000
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# define CPUX86_EXTENDED 0x80000000
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-# define VIR_CPU_x86_KVM_CLOCKSOURCE "__kvm_clocksource"
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-# define VIR_CPU_x86_KVM_NOP_IO_DELAY "__kvm_no_io_delay"
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-# define VIR_CPU_x86_KVM_MMU_OP "__kvm_mmu_op"
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-# define VIR_CPU_x86_KVM_CLOCKSOURCE2 "__kvm_clocksource2"
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-# define VIR_CPU_x86_KVM_ASYNC_PF "__kvm_async_pf"
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-# define VIR_CPU_x86_KVM_STEAL_TIME "__kvm_steal_time"
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-# define VIR_CPU_x86_KVM_PV_EOI "__kvm_pv_eoi"
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# define VIR_CPU_x86_KVM_PV_UNHALT "__kvm_pv_unhalt"
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-# define VIR_CPU_x86_KVM_CLOCKSOURCE_STABLE_BIT "__kvm_clocksource_stable"
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/*
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* The following HyperV feature names suffixes must exactly match corresponding
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--
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2.25.0
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