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[XEN] Shadow: check the _PAGE_PRESENT bit in fast-path MMIO shadow ptes
authorTim Deegan <Tim.Deegan@xensource.com>
Wed, 21 Mar 2007 17:17:08 +0000 (17:17 +0000)
committerTim Deegan <Tim.Deegan@xensource.com>
Wed, 21 Mar 2007 17:17:08 +0000 (17:17 +0000)
commit2ccced7b73c5d2d52febbaced473deeac9042c47
treeff76287fe01ccf0cf1feb55adf242fb3fa5d6ac9tree | snapshot
parent9639f3da4fbb1240b5501588ce2e33896f28957dcommit | diff
[XEN] Shadow: check the _PAGE_PRESENT bit in fast-path MMIO shadow ptes
otherwise the fast-path code is not safe against some kinds of
concurrent shadow updates.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
xen/arch/x86/mm/shadow/types.h diff | blob | history
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