--79888902-478184044-944226271=:4160
Content-Type: TEXT/PLAIN; charset=US-ASCII
the attached highmem-2.3.30-B4 patch (against 2.3.30-pre5) fixes the bug
noticed by Stephen: PAE mode must always use atomic 64-bit stores to
update page table entries, otherwise TLBs might get corrupted. (we do not
use atomic load-modify-stores because access to pagetables is serialized
by the pagetable spinlock.)
this actually was a bit more complex because a number of places within the
x86 architecture modified ptes directly.
with this patch the 64GB kernel runs very stable under high load. (2-level
page table kernels compile cleanly/boot/work as well)
-- mingo
--79888902-478184044-944226271=:4160
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Content-ID: <Pine.LNX.4.10.9912031404310.4160@chiara.csoma.elte.hu>
Content-Description:
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