linux-kernel - Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-priority interrupts

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <569E3D47.2020702@redhat.com>
Date:	Tue, 19 Jan 2016 14:42:31 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	"Wu, Feng" <feng.wu@...el.com>,
	Radim Krcmár <rkrcmar@...hat.com>
Cc:	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver
 lowest-priority interrupts



On 19/01/2016 05:44, Wu, Feng wrote:
> > I think Radim's suggestion is fine.  You can print an error (just once
> > per guest) to dmesg if the result of the hashing computation corresponds
> > to a disabled APIC.
> 
> Good idea, is there already a convenient way to do this in KVM?

No, you can just use something like the definition of printk_once (in
include/linux/printk.h), but with a flag in struct kvm_arch.

Paolo