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H A D | paravirt.c | c2e3277f Tue Jul 22 00:40:46 CDT 2008 Rusty Russell <rusty@rustcorp.com.au> x86: fix pte_flags() to only return flags, fix lguest (updated)
(Jeremy said: rusty: use PTE_MASK rusty: use PTE_MASK rusty: use PTE_MASK When I asked: jsgf: does that include the NX flag? He responded eloquently: rusty: use PTE_MASK rusty: use PTE_MASK yes, it's the official constant of masking flags out of ptes )
Change a15af1c9ea2750a9ff01e51615c45950bad8221b 'x86/paravirt: add pte_flags to just get pte flags' removed lguest's private pte_flags() in favor of a generic one.
Unfortunately, the generic one doesn't filter out the non-flags bits: this results in lguest creating corrupt shadow page tables and blowing up host memory.
Since noone is supposed to use the pfn part of pte_flags(), it seems safest to always do the filtering.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-and-morning-tea-spilled-by: Ingo Molnar <mingo@elte.hu>
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