linux-kernel - Re: [PATCH] KVM: VMX: invalidate vpid for invlpg instruction

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Message-ID: <20120831173707.GA3895@amt.cnet>
Date:	Fri, 31 Aug 2012 14:37:07 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Davidlohr Bueso <dave@....org>
Cc:	Avi Kivity <avi@...hat.com>, KVM <kvm@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KVM: VMX: invalidate vpid for invlpg instruction

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.

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.

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