From: Davidlohr Bueso <dave@gnu.org>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Avi Kivity <avi@redhat.com>, KVM <kvm@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] KVM: VMX: invalidate vpid for invlpg instruction
Date: Mon, 03 Sep 2012 01:27:20 +0200 [thread overview]
Message-ID: <1346628440.3170.3.camel@offbook> (raw)
In-Reply-To: <20120831173707.GA3895@amt.cnet>
On Fri, 2012-08-31 at 14:37 -0300, Marcelo Tosatti wrote:
> On Fri, Aug 31, 2012 at 06:10:48PM +0200, Davidlohr Bueso wrote:
> > For processors that support VPIDs we should invalidate the page table entry
> > specified by the lineal address. For this purpose add support for individual
> > address invalidations.
>
> Not necessary - a single context invalidation is performed through
> KVM_REQ_TLB_FLUSH.
Since vpid_sync_context() supports both single and all-context vpid
invalidations, wouldn't it make sense to also add individual address
ones as well, supporting further granularity?
>
> Single-context. If the INVVPID type is 1, the logical processor
> invalidates all
> linear mappings and combined mappings associated with the VPID specified
> in the INVVPID descriptor.
>
>
next prev parent reply other threads:[~2012-09-02 23:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-31 16:10 [PATCH] KVM: VMX: invalidate vpid for invlpg instruction Davidlohr Bueso
2012-08-31 17:37 ` Marcelo Tosatti
2012-09-02 23:27 ` Davidlohr Bueso [this message]
2012-09-03 9:11 ` Avi Kivity
2012-09-05 21:54 ` Davidlohr Bueso
2012-09-06 8:05 ` Avi Kivity
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