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>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>
Subject: [PATCH RFC v3 09/23] i386: invert hyperv_spinlock_attempts setting logic with hv_passthrough
Date: Fri, 9 Oct 2020 14:18:28 +0200 [thread overview]
Message-ID: <20201009121842.1938010-10-vkuznets@redhat.com> (raw)
In-Reply-To: <20201009121842.1938010-1-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.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 67e650d1e810..5350cd867759 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -1254,11 +1254,7 @@ 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) {
--
2.25.4
next prev parent reply other threads:[~2020-10-09 12:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-09 12:18 [PATCH RFC v3 00/23] i386: KVM: expand Hyper-V features early Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 01/23] WIP: update linux/headers Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 02/23] i386: fill in FEAT_HYPERV_EDX from edx instead of eax Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 03/23] i386: drop x86_cpu_get_supported_feature_word() forward declaration Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 04/23] i386: move hyperv_vendor_id initialization to x86_cpu_realizefn() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 05/23] i386: move hyperv_interface_id " Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 06/23] i386: move hyperv_version_id " Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 07/23] i386: move hyperv_limits " Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 08/23] i386: keep hyperv_vendor string up-to-date Vitaly Kuznetsov
2020-10-09 12:18 ` Vitaly Kuznetsov [this message]
2020-10-09 12:18 ` [PATCH RFC v3 10/23] i386: always fill Hyper-V CPUID feature leaves from X86CPU data Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 11/23] i386: stop using env->features[] for filling Hyper-V CPUIDs Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 12/23] i386: introduce hyperv_feature_supported() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 13/23] i386: introduce hv_cpuid_get_host() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 14/23] i386: drop FEAT_HYPERV feature leaves Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 15/23] i386: introduce hv_cpuid_cache Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 16/23] i386: split hyperv_handle_properties() into hyperv_expand_features()/hyperv_fill_cpuids() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 17/23] i386: move eVMCS enablement to hyperv_init_vcpu() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 18/23] i386: switch hyperv_expand_features() to using error_setg() Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 19/23] i386: adjust the expected KVM_GET_SUPPORTED_HV_CPUID array size Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 20/23] i386: prefer system KVM_GET_SUPPORTED_HV_CPUID ioctl over vCPU's one Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 21/23] i386: use global kvm_state in hyperv_enabled() check Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 22/23] i386: expand Hyper-V features during CPU feature expansion time Vitaly Kuznetsov
2020-10-09 12:18 ` [PATCH RFC v3 23/23] i386: provide simple 'hyperv=on' option to x86 machine types Vitaly Kuznetsov
2020-11-18 22:25 ` Eduardo Habkost
2020-11-19 8:52 ` Vitaly Kuznetsov
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