Could you be more specific about "inefficient"？
在 2012-7-25 上午11:22，"Warner Losh" <i...@bsdimp.com>写道：
>
>
> On Jul 24, 2012, at 6:40 PM, Paul Ambrose wrote:
>
> > #define PAGE_SHIFT 12
> > #define PAGE_SIZE (1<<PAGE_SHIFT)
> >
> > #define KSTACK_PAGES 2
> > #define KSTACK_GUARD_PAGES 2
> >
> > I had a MIPS machine (Loongson 3A) with page size 16KB( could be 4KB,
but
> > had to handle cache alias in OS), IMHO, define KSTACK_PAGE to 1 is
enough,
> > what is your opinion?
>
> Well, the PTE has two entries, so having just one page would be
inefficient.
>
> Warner
>
> > 2012/7/23 Konstantin Belousov <kostik...@gmail.com>
> >
> >> On Mon, Jul 23, 2012 at 02:54:30AM -0400, Richard Yao wrote:
> >>> What is the default kernel thread stack size on FreeBSD? I am
> >>> particularly interested in knowing about i386 and amd64, but knowing
> >>> this for other architectures (such as MIPS) would also be useful.
> >>>
> >>
> >> Look for the KSTACK_PAGES symbol defined in sys/<arch>/include/param.h.
> >> It defines _default_ number of pages allocated for kernel stack of
> >> new thread.
> >>
> >> We have 4 pages for amd64, and 2 pages for i386, AFAIR. Look up the
MIPS
> >> yourself.
> >>
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>
could you be more specific about "inefficient"？
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