From: Tang Chen Date: Tue, 16 Sep 2014 10:41:58 +0000 (+0800) Subject: kvm: Remove ept_identity_pagetable from struct kvm_arch. X-Git-Tag: fixes-for-v3.18-merge-window~23^2~30 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a255d4795f83cf3e6a1c7d5ab998392d9413298c;p=pandora-kernel.git kvm: Remove ept_identity_pagetable from struct kvm_arch. kvm_arch->ept_identity_pagetable holds the ept identity pagetable page. But it is never used to refer to the page at all. In vcpu initialization, it indicates two things: 1. indicates if ept page is allocated 2. indicates if a memory slot for identity page is initialized Actually, kvm_arch->ept_identity_pagetable_done is enough to tell if the ept identity pagetable is initialized. So we can remove ept_identity_pagetable. NOTE: In the original code, ept identity pagetable page is pinned in memroy. As a result, it cannot be migrated/hot-removed. After this patch, since kvm_arch->ept_identity_pagetable is removed, ept identity pagetable page is no longer pinned in memory. And it can be migrated/hot-removed. Signed-off-by: Tang Chen Reviewed-by: Gleb Natapov Signed-off-by: Paolo Bonzini --- Reading git-diff-tree failed