From: Avi Kivity <avi@qumranet.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, Hollis Blanchard <hollisb@us.ibm.com>
Subject: Re: [patch 2/2] KVM: switch to get_user_pages_fast
Date: Thu, 11 Sep 2008 17:06:30 +0300 [thread overview]
Message-ID: <48C925E6.5070009@qumranet.com> (raw)
In-Reply-To: <20080911134425.012616301@localhost.localdomain>
Marcelo Tosatti wrote:
> Convert gfn_to_pfn to use get_user_pages_fast, which can do lockless
> pagetable lookups on x86. Kernel compilation on 4-way guest is 3.7%
> faster on VMX.
>
> Hollis, can you fix kvmppc_mmu_map? gfn_to_page must not be called with
> mmap_sem held.
>
> Looks tricky:
> /* Must be called with mmap_sem locked for writing. */
> static void kvmppc_44x_shadow_release(struct kvm_vcpu *vcpu,
>
> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
> CC: Hollis Blanchard <hollisb@us.ibm.com>
>
>
I'll wait until this is resolved, since I don't want to break ppc.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-09-11 14:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-11 13:43 [patch 0/2] switch to get_user_pages_fast Marcelo Tosatti
2008-09-11 13:43 ` [patch 1/2] KVM: opencode gfn_to_page in kvm_vm_fault Marcelo Tosatti
2008-09-11 13:43 ` [patch 2/2] KVM: switch to get_user_pages_fast Marcelo Tosatti
2008-09-11 14:06 ` Avi Kivity [this message]
2008-09-11 15:04 ` Hollis Blanchard
2008-09-11 15:15 ` Avi Kivity
-- strict thread matches above, loose matches on Subject: below --
2008-09-16 23:54 [patch 0/2] " Marcelo Tosatti
2008-09-16 23:54 ` [patch 2/2] KVM: " Marcelo Tosatti
2008-09-17 14:42 ` Hollis Blanchard
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