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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <JBeulich@suse.com>, Paul Durrant <paul.durrant@citrix.com>
Cc: xen-devel@lists.xenproject.org, Keir Fraser <keir@xen.org>
Subject: Re: [PATCH] x86/hvm/viridian: fix the TLB flush hypercall
Date: Wed, 16 Mar 2016 13:37:16 +0000	[thread overview]
Message-ID: <56E9618C.8090204@citrix.com> (raw)
In-Reply-To: <56E96E5202000078000DD26D@prv-mh.provo.novell.com>

On 16/03/16 13:31, Jan Beulich wrote:
>
> That said, I now wonder anyway why this is a per-vCPU mask
> instead of a per-pCPU one: There's no need for every vCPU in
> the system to have its own afaics.

If every vcpu makes a viridian hypercall at the same time, Xen would end
up clobbering same mask while trying to serve the hypercalls.

~Andrew

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  reply	other threads:[~2016-03-16 13:37 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-16 13:00 [PATCH] x86/hvm/viridian: fix the TLB flush hypercall Paul Durrant
2016-03-16 13:20 ` Andrew Cooper
2016-03-16 13:25   ` Paul Durrant
2016-03-16 13:31 ` Jan Beulich
2016-03-16 13:37   ` Andrew Cooper [this message]
2016-03-16 13:39     ` Paul Durrant
2016-03-16 13:38   ` Paul Durrant
  -- strict thread matches above, loose matches on Subject: below --
2016-03-16 12:57 Paul Durrant
2016-03-16 13:09 ` Paul Durrant

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