about kmap_high function

From: michaelc (michaelc@turbolinux.com.cn)
Date: Fri Jun 29 2001 - 02:06:01 EST

    I found that the kmap_high function didn't call __flush_tlb_one()
when it mapped a highmem page sucessfully, and I think it maybe
cause the problem that TLB may store obslete page table entries, but
the kmap_atomic() function do call the __flush_tlb_one(), someone tell
me what's the differenc between the kmap_atomic and kmap_high except
that kmap_atomic can be used in IRQ contexts. I appreciate in advance.

Best regards,
 michaelc                          mailto:michaelc@turbolinux.com.cn

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This archive was generated by hypermail 2b29 : Sat Jun 30 2001 - 21:00:21 EST