Re: Hugetlb demanding paging for -mm tree

William Lee Irwin III
2004-08-07T08:13:11Z

On Fri, Aug 06, 2004 at 02:07:50PM -0700, William Lee Irwin III wrote:
> update_mmu_cache() does not appear to check the size of the translation
> to be established in many architectures. e.g. on arch/ia64/ it does
> flush_icache_range(addr, addr + PAGE_SIZE) unconditionally, and only
> sets PG_arch_1 on a single struct page. Similar comments apply to
> sparc64 and ppc64; I didn't check any others.

In general not much seems to be getting done about cache coherency in
hugetlb at all. This may be problematic even in mainline.

-- wli