From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, "Lan,
Tianyu" <tianyu.lan@intel.com>,
Igor Mammedov <imammedo@redhat.com>,
Jan Kiszka <jan.kiszka@web.de>, Peter Xu <peterx@redhat.com>
Subject: Re: [PATCH v1 04/11] KVM: x86: use u16 for logical VCPU mask in lapic
Date: Fri, 1 Jul 2016 14:48:00 +0200 [thread overview]
Message-ID: <20160701124759.GB27840@potion> (raw)
In-Reply-To: <fdc80f6b-cdb1-b1e6-a843-d5c6a75a69f5@redhat.com>
2016-07-01 09:56+0200, Paolo Bonzini:
> On 30/06/2016 22:54, Radim Krčmář wrote:
>> @@ -747,7 +745,7 @@ static inline bool kvm_apic_map_get_dest_lapic(struct kvm *kvm, struct kvm_lapic
>> return true;
>>
>> lowest = kvm_vector_to_index(irq->vector, hweight16(*bitmap),
>> - bitmap, 16);
>> + (unsigned long *)bitmap, 16);
>>
>
> kvm_vector_to_index's last argument is always 16, so we might as well
> omit it and make the third argument u16* too.
The other callsite in kvm_irq_delivery_to_apic() does not pass 16:
int idx = kvm_vector_to_index(irq->vector, dest_vcpus,
dest_vcpu_bitmap, KVM_MAX_VCPUS);
kvm_vector_to_index() uses find_next_bit(), so we would have two casts
if we changed the type. This patch is not really needed, so I could
drop it instead.
next prev parent reply other threads:[~2016-07-01 12:48 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-30 20:54 [PATCH v1 00/11] KVM: x86: break the xAPIC barrier Radim Krčmář
2016-06-30 20:54 ` [PATCH v1 01/11] KVM: x86: bump KVM_SOFT_MAX_VCPUS to 240 Radim Krčmář
2016-07-01 8:42 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 02/11] KVM: x86: add kvm_apic_map_get_dest_lapic Radim Krčmář
2016-07-01 7:57 ` Paolo Bonzini
2016-07-01 12:39 ` Radim Krčmář
2016-06-30 20:54 ` [PATCH v1 03/11] KVM: x86: dynamic kvm_apic_map Radim Krčmář
2016-06-30 22:15 ` Andrew Honig
2016-07-01 8:42 ` Paolo Bonzini
2016-07-01 12:44 ` Radim Krčmář
2016-07-01 14:03 ` Paolo Bonzini
2016-07-01 14:38 ` Radim Krčmář
2016-07-01 15:06 ` Paolo Bonzini
2016-07-01 15:12 ` Paolo Bonzini
2016-07-01 15:43 ` Radim Krčmář
2016-07-01 16:38 ` Paolo Bonzini
2016-07-01 15:35 ` Radim Krčmář
2016-07-01 7:33 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 04/11] KVM: x86: use u16 for logical VCPU mask in lapic Radim Krčmář
2016-07-01 7:56 ` Paolo Bonzini
2016-07-01 12:48 ` Radim Krčmář [this message]
2016-07-01 14:04 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 05/11] KVM: x86: use generic function for MSI parsing Radim Krčmář
2016-07-01 8:42 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 06/11] KVM: x86: use hardware-compatible format for APIC ID register Radim Krčmář
2016-07-01 8:33 ` Paolo Bonzini
2016-07-01 13:11 ` Radim Krčmář
2016-07-01 14:12 ` Paolo Bonzini
2016-07-01 14:54 ` Radim Krčmář
2016-07-01 15:07 ` Paolo Bonzini
2016-07-01 15:53 ` Radim Krčmář
2016-07-01 16:37 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 07/11] KVM: VMX: optimize APIC ID read with APICv Radim Krčmář
2016-07-01 8:42 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 08/11] KVM: x86: directly call recalculate_apic_map on lapic restore Radim Krčmář
2016-07-01 8:43 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 09/11] KVM: x86: reset lapic base in kvm_lapic_reset Radim Krčmář
2016-07-01 8:43 ` Paolo Bonzini
2016-06-30 20:54 ` [PATCH v1 10/11] KVM: x86: add KVM_CAP_X2APIC_API Radim Krčmář
2016-07-01 8:24 ` Paolo Bonzini
2016-07-01 13:25 ` Radim Krčmář
2016-07-01 18:09 ` David Matlack
2016-07-01 18:31 ` Radim Krčmář
2016-06-30 20:54 ` [PATCH v1 11/11] KVM: x86: bump MAX_VCPUS to 288 Radim Krčmář
2016-07-01 8:43 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160701124759.GB27840@potion \
--to=rkrcmar@redhat.com \
--cc=imammedo@redhat.com \
--cc=jan.kiszka@web.de \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=peterx@redhat.com \
--cc=tianyu.lan@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox