linux-kernel - Re: [Xen-devel] [PATCH 8/8] xen/pvh: Enable CPU hotplug

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: <d8223127-a8c8-4ff3-59f7-cb98d0f58bba@oracle.com>
Date:   Fri, 14 Oct 2016 15:01:39 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Andrew Cooper <andrew.cooper3@...rix.com>, david.vrabel@...rix.com,
        JGross@...e.com
Cc:     xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        roger.pau@...rix.com
Subject: Re: [Xen-devel] [PATCH 8/8] xen/pvh: Enable CPU hotplug

On 10/14/2016 02:41 PM, Andrew Cooper wrote:
> On 14/10/16 19:05, Boris Ostrovsky wrote:
>> PVH guests don't receive ACPI hotplug interrupts and therefore
>> need to monitor xenstore for CPU hotplug event.
> Why not?  If they don't, they should.  As we are providing ACPI anyway,
> we should provide all bits of it.

We don't have IOAPIC, which is how these interrupts are typically
delivered. I suppose we might be able to specify it as something else.

I'll look into this.

-boris