linux-kernel - Re: [PATCH v6 02/12] Halt vcpu if page it tries to access is swapped out.

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]

Date:	Thu, 07 Oct 2010 09:24:46 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Gleb Natapov <gleb@...hat.com>, kvm@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, hpa@...or.com,
	cl@...ux-foundation.org, mtosatti@...hat.com
Subject: Re: [PATCH v6 02/12] Halt vcpu if page it tries to access is swapped
 out.

On 10/07/2010 05:50 AM, Avi Kivity wrote:

>> +static bool can_do_async_pf(struct kvm_vcpu *vcpu)
>> +{
>> + if (unlikely(!irqchip_in_kernel(vcpu->kvm) ||
>> + kvm_event_needs_reinjection(vcpu)))
>> + return false;
>> +
>> + return kvm_x86_ops->interrupt_allowed(vcpu);
>> +}
>
> Strictly speaking, if the cpu can handle NMIs it can take an apf?

Strictly speaking, yes.

However, it may not be able to DO anything with it, since
it won't be able to reschedule the context it's running :)

-- 
All rights reversed
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/