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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-09-02 11:35:28 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-01 19:04:45 +0200 |
| commit | e1f9a8e8c90ae54387922e33e5ac4fd759747d01 (patch) | |
| tree | be75154742d88bbf4c22d17d65d75958da14cabe /target/i386/cpu.c | |
| parent | 050716292a63f4969b32cac32b85774521738ef5 (diff) | |
| download | qemu-e1f9a8e8c90ae54387922e33e5ac4fd759747d01.zip qemu-e1f9a8e8c90ae54387922e33e5ac4fd759747d01.tar.gz qemu-e1f9a8e8c90ae54387922e33e5ac4fd759747d01.tar.bz2 | |
i386: Implement pseudo 'hv-avic' ('hv-apicv') enlightenment
The enlightenment allows to use Hyper-V SynIC with hardware APICv/AVIC
enabled. Normally, Hyper-V SynIC disables these hardware features and
suggests the guest to use paravirtualized AutoEOI feature. Linux-4.15
gains support for conditional APICv/AVIC disablement, the feature
stays on until the guest tries to use AutoEOI feature with SynIC. With
'HV_DEPRECATING_AEOI_RECOMMENDED' bit exposed, modern enough Windows/
Hyper-V versions should follow the recommendation and not use the
(unwanted) feature.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210902093530.345756-7-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 2a19eba..8154343 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6644,6 +6644,8 @@ static void x86_cpu_initfn(Object *obj) object_property_add_alias(obj, "sse4_1", obj, "sse4.1"); object_property_add_alias(obj, "sse4_2", obj, "sse4.2"); + object_property_add_alias(obj, "hv-apicv", obj, "hv-avic"); + if (xcc->model) { x86_cpu_load_model(cpu, xcc->model); } @@ -6831,6 +6833,8 @@ static Property x86_cpu_properties[] = { HYPERV_FEAT_IPI, 0), DEFINE_PROP_BIT64("hv-stimer-direct", X86CPU, hyperv_features, HYPERV_FEAT_STIMER_DIRECT, 0), + DEFINE_PROP_BIT64("hv-avic", X86CPU, hyperv_features, + HYPERV_FEAT_AVIC, 0), DEFINE_PROP_ON_OFF_AUTO("hv-no-nonarch-coresharing", X86CPU, hyperv_no_nonarch_cs, ON_OFF_AUTO_OFF), DEFINE_PROP_BOOL("hv-passthrough", X86CPU, hyperv_passthrough, false), |