From: "Radim Krčmář" <rkrcmar@redhat.com>
To: zhanghailiang <zhang.zhanghailiang@huawei.com>
Cc: kvm@vger.kernel.org, gleb@kernel.org, pbonzini@redhat.com,
peter.huangpeng@huawei.com
Subject: Re: [PATCH] KVM: add KVM_CAP_VMX_APICV to advertise hardware apic-v support
Date: Thu, 11 Dec 2014 14:08:08 +0100 [thread overview]
Message-ID: <20141211130807.GA18311@potion.brq.redhat.com> (raw)
In-Reply-To: <1418285221-14256-1-git-send-email-zhang.zhanghailiang@huawei.com>
2014-12-11 16:07+0800, zhanghailiang:
> User space (i.e. QEMU) should be able to check whether KVM
> supports apic-v. User space will use this to decide whether enable
> emulated MSR-based APIC (i.e. hyperv-vapic).
Userspace is able to look at enable_apicv module parameter.
(This decision probably belongs to controls above QEMU.)
Anyway, I haven't thought much about it, so to the patch itself:
- KVM_CAP_VMX_APICV isn't a good name for a capability that doesn't
require VMX.
- The detection depends on irqchip_in_kernel(), which is awkward.
prev parent reply other threads:[~2014-12-11 13:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 8:07 [PATCH] KVM: add KVM_CAP_VMX_APICV to advertise hardware apic-v support zhanghailiang
2014-12-11 11:48 ` Paolo Bonzini
2014-12-11 12:53 ` zhanghailiang
2014-12-11 13:28 ` Radim Krčmář
2014-12-11 17:15 ` Paolo Bonzini
2014-12-17 22:17 ` Stefan Fritsch
2014-12-18 3:37 ` zhanghailiang
2014-12-18 8:30 ` Paolo Bonzini
2014-12-18 8:57 ` Stefan Fritsch
2014-12-18 9:23 ` Paolo Bonzini
2014-12-11 13:08 ` Radim Krčmář [this message]
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