linux-kernel - Re: [PATCH 06/11] KVM: x86: pass kvm_mmu_page to gfn_to

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Message-ID: <555C4ECC.3000906@redhat.com>
Date:	Wed, 20 May 2015 11:07:24 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Xiao Guangrong <guangrong.xiao@...ux.intel.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
CC:	rkrcmar@...hat.com, bdas@...hat.com
Subject: Re: [PATCH 06/11] KVM: x86: pass kvm_mmu_page to gfn_to_rmap



On 20/05/2015 10:30, Xiao Guangrong wrote:
>> This is always available, and we can use the role to look up the right
>> memslots array.
> 
> How about pass role instead of sp so that it can be used if no sp is
> available?

I can surely do that instead, but I'm not sure why one would have a role
and not an sp.

If you do not have an sp, you probably should instead use
kvm_vcpu_gfn_to_memslot and __gfn_to_rmap.  See for example
rmap_write_protect.

I pushed the work to an "smm" branch of kvm.git, so that you can see the
result.

Paolo
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