Re: [Xen-ia64-devel][PATCH]Change tlbflush_clock to 64bit

[Kouya SHIMURA <kouya@xxxxxxxxxxxxxx>]

Xu, Anthony writes:
 > Change tlbflush_clock to 64bit,

Hi Anthony,

I don't think that the expansion to 64bit of tlbflush_clock is good
idea. If it is extended, tlbflush_timestamp in struct page_info should
be extended also. see xen/common/page_alloc.c

IMHO, to keep page_info small is more significant than to reduce the
frequency of tlbflush.

But tlbflush_timestamp in page_info seems not to be used in IA64
because tlbflush_filter is defined as follows:

#define tlbflush_filter(x,y) ((void)0)

Umm...

Thanks,
Kouya


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