From: Avi Kivity <avi@redhat.com>
To: Sheng Yang <sheng@linux.intel.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH 1/7] KVM: VMX: Allocate MSR Bitmap for each vcpu
Date: Wed, 08 Oct 2008 12:14:22 +0200 [thread overview]
Message-ID: <48EC87FE.3060006@redhat.com> (raw)
In-Reply-To: <1223439478-26515-2-git-send-email-sheng@linux.intel.com>
Sheng Yang wrote:
> Separate msr_bitmap for each vcpu, prepared for guest PAT support.
>
Why is this necessary? True, it reduces the overhead of the guest
reading and writing the PAT MSRs, but is such access frequent?
I would think guests set the PAT once, and never change it later.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-10-08 10:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-08 4:17 [PATCH 0/7] Enable MTRR/PAT support for KVM EPT(v2) Sheng Yang
2008-10-08 4:17 ` [PATCH 1/7] KVM: VMX: Allocate MSR Bitmap for each vcpu Sheng Yang
2008-10-08 10:14 ` Avi Kivity [this message]
2008-10-08 10:41 ` Sheng Yang
2008-10-08 11:10 ` Avi Kivity
2008-10-08 11:21 ` Sheng Yang
2008-10-08 4:17 ` [PATCH 2/7] KVM: VMX: Add PAT support for EPT Sheng Yang
2008-10-08 4:17 ` [PATCH 3/7] x86: Rename mtrr_state struct and macro names Sheng Yang
2008-10-08 4:17 ` [PATCH 4/7] Export some definition of MTRR Sheng Yang
2008-10-08 4:17 ` [PATCH 5/7] KVM: Improve MTRR structure Sheng Yang
2008-10-08 4:17 ` [PATCH 6/7] Add local get_mtrr_type() to support MTRR Sheng Yang
2008-10-08 4:17 ` [PATCH 7/7] Enable MTRR for EPT Sheng Yang
2008-10-08 10:23 ` [PATCH 0/7] Enable MTRR/PAT support for KVM EPT(v2) Avi Kivity
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