linux-kernel - Re: [PATCH 0/3] Per-VCPU MSR bitmaps patches

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Date:   Sat, 27 Jan 2018 09:39:52 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Radim Krčmář <rkrcmar@...hat.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        KarimAllah Ahmed <karahmed@...zon.de>
Subject: Re: [PATCH 0/3] Per-VCPU MSR bitmaps patches - topic branch for
 x86/pti

On 26/01/2018 23:51, Paolo Bonzini wrote:
> David and others,
> 
> the following changes since commit ba804bb4b72e57374b5f567b783aa0298fba0ce6:
> 
>   Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (2018-01-26 09:03:16 -0800)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/virt/kvm/kvm.git msr-bitmaps
> 
> for you to fetch changes up to de4004d8b8c9da2a3923e42577307c59c71ab8e6:
> 
>   KVM: VMX: make MSR bitmaps per-VCPU (2018-01-26 22:59:32 +0100)
> 
> The patches are on top of Linus's tree and I checked that they apply okay
> on top of the latest 4.14 tree as well as required for tip x86/pti.
> One extra commit is needed that is pretty safe and would have been merged
> next week.

... and there's an issue in the patches (the choice of whether to
intercept MSR_KERNEL_GS_BASE is inverted).  I'll blame what's left of
this week's flu and send v2.

Paolo

> Radim, please pull this into kvm.git too.  The merge is a bit messy, so I've
> placed my resolution on kvm.git, branch refs/heads/msr-bitmaps-merge-resolution.
> It's based on kvm/queue, assuming that all of kvm/queue will get into the
> pull requests for the 4.16 merge window (and thus soonish in kvm/next).
> Hopefully the next few releases will be much more uneventful...
> 
> Thanks,
> 
> Paolo
> 
> Jim Mattson (1):
>   KVM: nVMX: Eliminate vmcs02 pool
> 
> Paolo Bonzini (2):
>   KVM: VMX: introduce alloc_loaded_vmcs
>   KVM: VMX: make MSR bitmaps per-VCPU
> 
>  arch/x86/kvm/vmx.c | 437 ++++++++++++++++++++++-------------------------------
>  1 file changed, 183 insertions(+), 254 deletions(-)
>