On 06/22/2010 03:04 PM, Alexander Graf wrote:
Avi Kivity wrote:
On 06/21/2010 04:44 PM, Alexander Graf wrote:
Currently the shadow paging code keeps an array of entries it knows
about.
Whenever the guest invalidates an entry, we loop through that entry,
trying to invalidate matching parts.
While this is a really simple implementation, it is probably the most
ineffective one possible. So instead, let's keep an array of lists
around
that are indexed by a hash. This way each PTE can be added by 4
list_add,
removed by 4 list_del invocations and the search only needs to loop
through
entries that share the same hash.
This patch implements said lookup and exports generic functions that
both
the 32-bit and 64-bit backend can use.
Mind explaining the all list in there?
The all list is used to flush all entries when we need to get rid of all
entries, for example when we write a BAT.
Yes, I more or less gathered that when I saw patch 2. Does it make
sense to avoid it by looping over all vpte lists in the vpte hash? More
effort for a full flush, esp. when the mmu is sparse, but less for
individual pte operations.
--
error compiling committee.c: too many arguments to function
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