Bug 192212 - "cat /sys/hypervisor/properties/writable_pt" returns 0
"cat /sys/hypervisor/properties/writable_pt" returns 0
Status: CLOSED NOTABUG
Product: Fedora
Classification: Fedora
Component: kernel-xen (Show other bugs)
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All Linux
medium Severity medium
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Assigned To: Markus Armbruster
Brian Brock
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2006-05-18 09:21 EDT by Stephen Tweedie
Modified: 2007-11-30 17:11 EST (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2006-05-18 09:45:20 EDT
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Description Stephen Tweedie 2006-05-18 09:21:34 EDT
Description of problem:
# # cat /sys/hypervisor/properties/writable_pt
0

but the hypervisor should be providing writable page tables and the kernel
should be using them.  Something is breaking down in the path between the
hypervisor XENVER_get_features hypervall and the sysfs output.

Version-Release number of selected component (if applicable):

2.6.16-1.2203_FC6xen0.i686
but it happens as far back as FC5 too.


How reproducible:
100%

Steps to Reproduce:
1. cat /sys/hypervisor/properties/writable_pt
  
Actual results:
0

Expected results:
1
Comment 1 Markus Armbruster 2006-05-18 09:45:20 EDT
Expected result is 1 only in shadow mode. So the actual result is actually correct.

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