From: Gleb Natapov <gleb@redhat.com>
Date: Fri, 31 May 2013 00:36:30 +0000 (+0800)
Subject: KVM: MMU: reduce KVM_REQ_MMU_RELOAD when root page is zapped
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~22^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=05988d728dcd962d50374e4e63171324163005b6;p=pandora-kernel.git

KVM: MMU: reduce KVM_REQ_MMU_RELOAD when root page is zapped

Quote Gleb's mail:
| why don't we check for sp->role.invalid in
| kvm_mmu_prepare_zap_page before calling kvm_reload_remote_mmus()?

and

| Actually we can add check for is_obsolete_sp() there too since
| kvm_mmu_invalidate_all_pages() already calls kvm_reload_remote_mmus()
| after incrementing mmu_valid_gen.

[ Xiao: add some comments and the check of is_obsolete_sp() ]

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---

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