Re: Hugetlb demanding paging for -mm tree

[William Lee Irwin III]

William Lee Irwin III <> wrote on Monday, August 09, 2004 11:59 AM:
>> As things stand in mainline, it's not an obvious issue. Ken appears to
>> be calling it for hugetlb in the ZFOD fault handling patches, which
>> have the issue that it may behave badly in several respects when
>> acting on large pages. The cache coherency bits in update_mmu_fault()
>> are necessary in general, but mainline omits them. It should only
>> result in intermittent failures on machines with sufficiently
>> incoherent caches. 

On Tue, Aug 10, 2004 at 01:52:02AM -0700, Seth, Rohit wrote:
> Will the flush_dcache_page for hugepages even on incoherent caches be
> not enough.  And that flush_dcache_page should be done in alloc_hugepage
> after clearing the page(or change the clear_highpage to
> clear_user_high_page).

Could you rephrase that? I'm having trouble figuring out what you meant.


-- wli
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/