Re: 2.3 Pagedir allocation/free and update races

David S. Miller (davem@redhat.com)
Tue, 14 Dec 1999 01:55:54 -0800


From: kanoj@google.engr.sgi.com (Kanoj Sarcar)
Date: Tue, 14 Dec 1999 01:46:00 -0800 (PST)

So, all architectures that cache page directories have racy code.

They are cpu local, how can they be racy?

If you are mentioning the kernel pgdir update cases, well even then
many architectures do not even need to update any of the pgtable
caches during such events (sparc64 for example).

Later,
David S. Miller
davem@redhat.com

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