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From: Wanpeng Li <kernellwp@gmail.com>
To: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	kvm <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
	"Lan, Tianyu" <tianyu.lan@intel.com>,
	Igor Mammedov <imammedo@redhat.com>,
	Jan Kiszka <jan.kiszka@web.de>, Peter Xu <peterx@redhat.com>,
	Yang Zhang <yang.zhang.wz@gmail.com>
Subject: Re: [PATCH v3 04/14] KVM: x86: dynamic kvm_apic_map
Date: Tue, 2 Aug 2016 19:39:43 +0800	[thread overview]
Message-ID: <CANRm+CyXrpHKY5pFu46-OTAq2Wr2cWP3Rm7Ln+38-9o-HVYjZA@mail.gmail.com> (raw)
In-Reply-To: <20160712200930.32143-5-rkrcmar@redhat.com>

2016-07-13 4:09 GMT+08:00 Radim Krčmář <rkrcmar@redhat.com>:
[...]
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 9880d03f533d..224fc1c5fcc6 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -120,7 +120,7 @@ static inline bool kvm_apic_map_get_logical_dest(struct kvm_apic_map *map,
>         switch (map->mode) {
>         case KVM_APIC_MODE_X2APIC: {
>                 u32 offset = (dest_id >> 16) * 16;
> -               u32 max_apic_id = ARRAY_SIZE(map->phys_map) - 1;
> +               u32 max_apic_id = map->max_apic_id;
>
>                 if (offset <= max_apic_id) {
>                         u8 cluster_size = min(max_apic_id - offset + 1, 16U);
> @@ -152,14 +152,22 @@ static void recalculate_apic_map(struct kvm *kvm)
>         struct kvm_apic_map *new, *old = NULL;
>         struct kvm_vcpu *vcpu;
>         int i;
> -
> -       new = kzalloc(sizeof(struct kvm_apic_map), GFP_KERNEL);
> +       u32 max_id = 255;

If this should be max_id = KVM_MAX_VCPU_ID? I have a patch on hand to
fix it, but I didn't know whether it is your desired behavior or not.

Regards,
Wanpeng Li

  parent reply	other threads:[~2016-08-02 13:49 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-12 20:09 [PATCH v3 00/14] KVM: x86: break the xAPIC barrier Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 01/14] KVM: x86: bump KVM_SOFT_MAX_VCPUS to 240 Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 02/14] KVM: x86: add kvm_apic_map_get_dest_lapic Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 03/14] KVM: x86: use physical LAPIC array for logical x2APIC Radim Krčmář
2016-08-02 13:46   ` Wanpeng Li
2016-08-02 14:22     ` Radim Krčmář
2016-08-02 16:40       ` Nadav Amit
2016-07-12 20:09 ` [PATCH v3 04/14] KVM: x86: dynamic kvm_apic_map Radim Krčmář
2016-07-13  8:29   ` Paolo Bonzini
2016-07-13 14:37     ` Radim Krčmář
2016-08-02 11:39   ` Wanpeng Li [this message]
2016-08-02 12:22     ` Radim Krčmář
2016-08-02 13:15       ` Wanpeng Li
2016-07-12 20:09 ` [PATCH v3 05/14] KVM: x86: use generic function for MSI parsing Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 06/14] KVM: x86: use hardware-compatible format for APIC ID register Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 07/14] KVM: x86: reset APIC ID when enabling LAPIC Radim Krčmář
2016-08-02 13:26   ` Wanpeng Li
2016-08-02 13:52     ` Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 08/14] KVM: VMX: optimize APIC ID read with APICv Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 09/14] KVM: x86: reset lapic base in kvm_lapic_reset Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 10/14] KVM: pass struct kvm to kvm_set_routing_entry Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 11/14] KVM: x86: add KVM_CAP_X2APIC_API Radim Krčmář
2016-07-13  8:41   ` Paolo Bonzini
2016-07-13 14:40     ` Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 12/14] KVM: x86: add a flag to disable KVM x2apic broadcast quirk Radim Krčmář
2016-07-13  8:38   ` Paolo Bonzini
2016-07-13 15:14     ` Radim Krčmář
2016-07-13 15:30       ` Paolo Bonzini
2016-07-13 10:15   ` Paolo Bonzini
2016-07-13 14:52     ` Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 13/14] KVM: x86: bump MAX_VCPUS to 288 Radim Krčmář
2016-07-12 20:09 ` [PATCH v3 14/14] KVM: x86: bump KVM_MAX_VCPU_ID to 1023 Radim Krčmář

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