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From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Eduardo Habkost <ehabkost@redhat.com>,
	Igor Mammedov <imammedo@redhat.com>
Subject: [PATCH v5 02/17] i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough
Date: Mon,  1 Mar 2021 14:50:48 +0100	[thread overview]
Message-ID: <20210301135103.306003-3-vkuznets@redhat.com> (raw)
In-Reply-To: <20210301135103.306003-1-vkuznets@redhat.com>

There is no need to have this special case: like all other Hyper-V
enlightenments we can just use kernel's supplied value in hv_passthrough
mode.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 target/i386/kvm/kvm.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 8e9ae7522582..3c1202333d9d 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -1256,11 +1256,7 @@ static int hyperv_handle_properties(CPUState *cs,
         c = cpuid_find_entry(cpuid, HV_CPUID_ENLIGHTMENT_INFO, 0);
         if (c) {
             env->features[FEAT_HV_RECOMM_EAX] = c->eax;
-
-            /* hv-spinlocks may have been overriden */
-            if (cpu->hyperv_spinlock_attempts != HYPERV_SPINLOCK_NEVER_NOTIFY) {
-                c->ebx = cpu->hyperv_spinlock_attempts;
-            }
+            cpu->hyperv_spinlock_attempts = c->ebx;
         }
         c = cpuid_find_entry(cpuid, HV_CPUID_NESTED_FEATURES, 0);
         if (c) {
-- 
2.29.2



  parent reply	other threads:[~2021-03-01 13:56 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-01 13:50 [PATCH v5 00/17] i386: KVM: expand Hyper-V features early and provide simple 'hv-default=on' option Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 01/17] i386: keep hyperv_vendor string up-to-date Vitaly Kuznetsov
2021-03-01 13:50 ` Vitaly Kuznetsov [this message]
2021-03-01 13:50 ` [PATCH v5 03/17] i386: always fill Hyper-V CPUID feature leaves from X86CPU data Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 04/17] i386: stop using env->features[] for filling Hyper-V CPUIDs Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 05/17] i386: introduce hyperv_feature_supported() Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 06/17] i386: introduce hv_cpuid_get_host() Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 07/17] i386: drop FEAT_HYPERV feature leaves Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 08/17] i386: introduce hv_cpuid_cache Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 09/17] i386: split hyperv_handle_properties() into hyperv_expand_features()/hyperv_fill_cpuids() Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 10/17] i386: move eVMCS enablement to hyperv_init_vcpu() Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 11/17] i386: switch hyperv_expand_features() to using error_setg() Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 12/17] i386: adjust the expected KVM_GET_SUPPORTED_HV_CPUID array size Vitaly Kuznetsov
2021-03-01 13:50 ` [PATCH v5 13/17] i386: prefer system KVM_GET_SUPPORTED_HV_CPUID ioctl over vCPU's one Vitaly Kuznetsov
2021-03-01 13:51 ` [PATCH v5 14/17] i386: use global kvm_state in hyperv_enabled() check Vitaly Kuznetsov
2021-03-01 13:51 ` [PATCH v5 15/17] i386: expand Hyper-V features during CPU feature expansion time Vitaly Kuznetsov
2021-03-01 13:51 ` [PATCH v5 16/17] i386: provide simple 'hv-default=on' option Vitaly Kuznetsov
2021-03-01 13:51 ` [PATCH v5 17/17] qtest/hyperv: Introduce a simple hyper-v test Vitaly Kuznetsov

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