Hi all
I notice that some fields in kvm_mmu_page struct record the unsync
status of an mmu page.
struct kvm_mmu_page {
-> bool unsync;
int root_count; /* Currently serving as active root */
-> unsigned int unsync_children;
-> DECLARE_BITMAP(unsync_child_bitmap, 512);
};
Moreover, some functions in mmu.c also relate to this so-called unsync
mmu mechanism, like kvm_sync_page.
Could anyone explain a bit about the unsync mmu and why it can boost
the performance.
Thx.
--
Tianxiang Miao,
Graduate Student,
Institute of Parallel and Distributed Systems (IPADS),
School of Software,
Shanghai JiaoTong University
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